# Appendix — Raytheon Co. v. Roper Corp. > Briefs, arguments, decisions, and more. URL: https://www.frixlaw.com/law-library/documents/brief%3Amicro_IA40385010_3046%3A2 ## Record - **Collection:** Supreme Court brief - **Document type:** Appendix - **Published:** January 1, 1984 - **Citation:** 469 U.S. 835 ## Text Office - Supreme Court. US FILED s 83-2128 _—— ALEXANDER \. STEVAS, CLERK No. - In the Supreme Court of the United States. OcTOBER TERM, 1983. RAYTHEON COMPANY, PETITIONER, v. ROPER CORPORATION, RESPONDENT. Appendix A. ROBERT A. CESARI, MARTIN J. O’DONNELL, STEVEN J. HENRY, CESARI AND MCKENNA, 312 Union Wharf East, Boston, Massachusetts 02109. (617) 523-8100 Counsel for Petitioner Of Counsel: JOsEPH D. PANNONE, WILLIAM R. CLARK, 141 Spring Street, Lexington, Massachusetts 02173. (617) 862-6600 BATEMAN & SLADE. INC ~ BOSTON, MASSACHUSETTS PETITION FOR WRIT OF CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE FEDERAL CIRCUIT APPENDIX VOLUME A Torrey U.S. Patent 4,028,520 (the Patent in Suit)............Al Highlighted Portions of Torrey Patent....eeeeseeecceseceveeecAl4 Tingley U.S. Patent 3,430,023. .ccccccccccccvcscccevecscscccce Al7 Boehm U.S. Patent 3,440,386. .cccrcccccccccccccccccccsccscccsces AZZ French Patent 1,249,130 (Miwag Mikrowellen A.G.).......2++-2- A3Z Peranslation of French Patent 1,249, 130. scccscccccsccsessesces AZT VOLUME B Opinion of U.S. District Court, Jan. 20, L9B3.cccccscsccsccceebd Opinion of U.S. Court of Appeals, Dec. 30, 1983..........2....B43 Order of U.S. Court of Appeals Denying Rehearing Mar. he eo ihe eee a’ eee ohe ew ebb eae een eee Roper Exhibit No. Css eek ek dW hee PERSE EOS OEKSLE EERO NSS Raytheon Exhibit NO. BJT. ccccccccccccccccccccsccccscccccsccecbID Roper's Pre-Trial Brief (Selected PartsS)....ccceeeecceeeeeee +Bl6 Roper's Answer to Raytheon's Request for Admission No. 23....B80 Deposition Transcript of R. D. Triplett (Selected Parts).....B8l Stenographic Transcript of Trial (Selected Parts)............B82 EDITOR'S NOTE THE FOLLOWING PAGES WERE POOR HARD COPY AT THE TIME OF FILMING. IF AND WHEN A BETTER COPY CAN BE OBTAINED, A NEW FICHE WILL BE ISSUED. United States Patent «1% me 11) 4,028,520 Torrey {45) June 7, 1977 ($4) AIR FLOW SYSTEM FOR COMMON Attorney, Agent, or Firm—Leydig, Voit, Osann, Mayer CAVITY MICROWAVE OVEN [75] Inventor: Samaer H. Torrey, West Lafayete, ind. [73] Assignee: Roper Corporstion, Kankakee, Ml. [22] Filed: Feb. 26, 1976 (21) Appl. No.: 661,524 v8 fas 219/10.55 B; 219/10.55 F J SS | een HOSB 9/06 (58) Field of Search .............. 219/10.55 B, 10.55 F, 219/10.55 R, 126/273 R, 19 R, 343/731, 732, 741, 772, 879 {56) References Ched UNITED STATES PATENTS oO "eee 219/10.58 B Fa eee . 219/10.58 F 3.172.987 3/196S3 Frezmayer ................... 219/10.58 B ee 9 MEE A ccrtnrtaahownseiiatiinsrcnsiien 126273 KR 3.470.942 10/1969 Fuksdaetal .............. 219/10.55 B 3.626.135 12/197) Fitzmayer .................. 219/10.55 F 3.962.561 6/1976 Phantenaz 2200000000000... 126/19 R Pnmary Examiner—Arthur T. Gnmiey & Hoh, Lid. {$7} ABSTRACT A combined microwave-thermal] range having an oven cavity with a thermal heating element for baking and self-cleaning purposes, the botiom wall of the oven cavity having an mlet opening and the top wall having a vent opening. A microwave module mounted in space provided under the botiom wall of the cavity includes a microwave power supply housing enclosing a magne- tron and blower. The module has an associated wave- guide secured to the top of the housing and extending cantilever-fashion close to the botiom wall of the cav- Ry, with the outlet of the waveguide in alinement with the central opening couples microwave energy from the waveguide to the cavity. Blower air passes from the blower inlet through the magnetron and waveguide and into the cavity for ventilaung the same. The blower inlet is located at a level below the bottom wall of the cavity so that, when the blower and magnetron are turned off and the thermal element is turned on, air passing through the blower, power supply housing and waveguide flows upwardly by natural convection into the opening mm the botiom wal] of the cavity with final escape through the vent at the top of the cavity. 7 Claims, 16 Drawing Figures A2 U.S. Patent june 7, 1977 Sheet 1 of 5 4,028,520 S71 FO 0t My Mn Me EG. Ae A . J L d | MT 5: Y/Y W a MI wf _ 4 HA oll Al cies matte aie tae tam ta ate eae ease — WALLA WE) A3 U.S. Patent June 7, 1977 Sheet 2 of 5 4,028,520 Si oOo g Be C @ 7 Pe ema | | | | LOSS: Ee pee (Se NEsaO LIN ¥ SN. oe 2 44 ees a | 7 |; Fi { / | | sd 1 ard | / ir = = \ “i LI T ue += #&, wr ats 4 =: > £f ——S c 3 / ‘Be 5 = i zine oD) ead Se Z OM LOIN y= Ye lait Lv OE: Me \. # =. rae ipa i IF gs yw f 7 COS” 7 haem /\ Yt | 2 = a eee Sf eee 2: . - Ronen a = i OgwtI~- fd A4 U.S. Patent june 7, 1977 Sheet 3 of 5 4,028,520 I NY S iP Lf ot {i Ky %) 1 1 : | | Ry 204 | a 5] ne > a SSO ew ed by N qa x =) == : | | i BY 0 Weer ed | Oe Ge x SA : Wie OE Nip? JO OG == -—" ee =—— = 4 la =n A 7 Yai | 7 ; | d Vid ad Wr f ot J ||. y U.S. Patent sue? 1977 shenacts 4,028,520 A6 U.S. Patent Sune 7, 1977 Sheet 5 of 5 4,028,520 , @: ASE ain Ji, M7 oy M4 CLL Mm Mf , Uke yf 7 4 =" Sey nS Hl WE (A, e) i Roe Ned COSTS VESyw mY | fe Y~ 4 TAS \ ROX a Sy Aes l We ‘ v f art , 4 H LV Oo | tf ef 7 Gy wd | AIR FLOW SYSTEM FOR COMMON CAVITY ine 2-2 2 FG.1. MICROWAVE OVEN = “FAG. 2a shows the relation berween the antenna and BACKGROUND OF THE INVENTION ns ee i Os ee FG For » number of years oven cavites have been em —_ FIG. 3's 8 front view of the oven of FIG. J with the tures present precuca! problems where operated im 10 Sonmiructed in accorance sith Ue present mvenuon threr_ modes namely microweve, thermal and self. — FIG. 3 5 8 vervical seccion taken the micro- 40 2 level, on the order of 900" F., capable of producing Song tine $8 in FIG. 2. === “thermal decomposition of the a00 on the cavity mr- —_ FAG. 6 is a transverse section taken through the mod- faces, a slightly positive preascre is created causing 35 tle looking along the line 6—4 in FIG. 5. g, z E E 4 back-up volauiit decomposition = }. Go is a fragment taken along line 6o-—¢0 in FIG products into the waveguide where condensation wakes SS ; j = $36. 7 is 2 crom sectional view the hollow place. resulting in an accumulstion. or build up. of : ctor ad through — FAG. 7s ip a profile view of the antenna in FIG. 7. characteristics of the waveguide. Such accumulation és Pepa test ere ad een Lene " : = 7. * invention to provide 8 Common cavity oven which » : - . scaled againn excape of microwave energy when oper-= 200 WH senain preferred embodiments, .& will be : understood that we do not intend to be hmited to the aied in the microwave mode but which nevertheless has : - ee co . 35 parucular embodiments shown and that we intend, on good ventilauion charactersucs when opersied m the the contrary, to Shea sew ' =e _ thermal and self otherwise securely fastened to the top wall 93 of the waveguide At the root of the socket ws 2 resilient con. ductive gasket 117 which may, for example, be formed of metal gauze For clamping the hollow conductor against the gause in the socket /15, s pair of clamping screws 12! are provided which *xtend through registenng openings in the Marge 111, with the threaded ups of the screws being received in tapped openings 122 in the mounting member 116. The screws 121 are not, however, relied upon to keep the Mange 111 ughuy seated against the land Prefer. ab!) three sddiuonal screws 123 project through regu. tering openings im the Dange to engage tapped boiles 4p 124 w the land Spaced sbove the flange 111 is # mounting mng 125 which i supporied upon short pedestals 126. The mounung ring 125 w secured by screws 127 which telescope through the Oange and imto reguienng 45 “apped holes in the land Thus im assembling the device the flange us seated on the land and the screws 121 are wghtened in the threaded holes 122 to seat the conductor 110, at m lower end, firmly against the socket 115 im the wave- guide The screws 123 are then ughtened in place to Goubly insure that the Dange 111 = wmumately seated against the land Finally, the screws 127 are inserted Mo the mountng nng. and ughtened Because of the canulever extension of the waveguide $2 wpor the housing $1, the waveguide occupies « nominal posivon from which it may be resiliently de- flected without strain or damage w the module, for example, when the screws 121 are turned to draw the holiow conductor down into contact with the gasket @ 117, the end of the waveguide os simultaneously drawn upwardly Unrough s smal! angie, resilenuy twersting the module, un! Opposiuon to turning of the screws ind). cates that the hollow conductor 110 ms fully boriomed Seating of the hollow conductor to provide a tight yom! at both ends sw assured. notwithstanding dumensiwonal variauons, under producuon-line condiuions, between the bottom 22 of the cavity and the plane of the sup- ports 44 in the storage space A9 46c-" 5 In accordance with the present invention (FIG. 7) an antenna & mounted for rotation coaxially im the hollow conductor 110, the antenna being coupled at ms lower end to 8 motor and drive ain mounted upon the wave- guide As will be discussed im greater detail, the an- tenna. indicaicé at 130 has 2 straight shank poruon 131 which is coaxially arranged in the conductor 110, 8 “wansitional” poruon 132 which s upwardly angled and « radial arm portion 133. In the preferred embodi- ment the antenna is formed by first and second abrupt bends 134, 135. The lower end of the antenna, indi- cated at 136 gs keyed for reception im s rotatable mount 137 journaled im the bottom wall of the waveguide To serve as & bearing for the upper end of the antennas, and to shield the upper end of the hollow conductor from food spills or other foreign matier, is a ceramic duc 140 supported within the amounting ring 125 on the posu 126 and having # central opening 141. The antenna held captive in Use central opening by 8 snap ring 142 whoch @ in interfenng relauon with the underside of the dmac ht is one of the features of the present construcuon that the entire antenna and hollow conductor assembly may be convenienUy removed, when service becomes necessary, from the inside of the oven cavity By un- actewing the screws 127, the mounting ring 125, disc 140, and the antenna itself may be drawn clear of the conductor Next, unscrewing the screws 121 frees the lower end of the conductor 110 from its seat on the waveguide, and unscrewing the screws 123 permit separauon of the conductor Mange 111 from the land 112 on the botiom wal! of the oven so that the conduc- tor may be ified clear The cunductor assembly may be reinstalled by simply reversing the procedure For the purpose of rotating the mount 137, s small, clock-type dnving motor 150 wu provided having inter- na) gear reduction The motor is mounted on the top side of & motor mounting Mange 151 which extends from the side of the waveguide Pinned to the motor shaft oa first gear 152 located on the underside of the waveguide and which meshes with « second gear 153 which pinned to # shaft 154 forming 8 part of the mount 137. The shaft = journaled in 8 bearing 155 of plastic or the like which occupies an opening 156 in the bottom of the waveguide, the opening being sufficiently smal! so that negligible leakage occurs The motor gear reduction, and the ratio of gears 152, 153, in such that the antenns rotates at 2 low speed which may, for ex- ample, be on the order of 5 to 10 revolutions per min- ule, in any event providing 8 period of rotauon which os many * : i ; § “0 | Q q ¥ | ! } E t Y i tt yss i}! ; zt ; Lf L ¥ i z th rte z * s * i it iH 5 | i EF i in accordance with one of the features of the ren. The mode selector switch 35 is used having « firm tion al passages are provided between the power gup- = contact 181 for thermal heal, s second contact 182 ply howsing so that » portion of air from the blower 80, = which energizes the , and « third, or dual and which cool the magnetron, flows through the 55 contact 183 which turns on both of the energy sources waveguide and hollow conductor for ventilating the 8=— As indicated im the figure, the blower motor 84 and Cavity when the blower is on. for final venting from the §=—s antenna motor 150 are turned on whenever the magne sop of the cavity, with the same an peth being utilized §=—swon is turned on but are off at al! other times. A fourth to set up flow of convecied ait during thermal cooking, or “se!f cakee, assignor to le . Roper Corporation, Kaukakee, Ill., a corporation of Filed Sept. 11, 1967, Ser. No. 666,805 US. CL 219—10.55 Int. C. HOSb 9/06 6 Claims + ABSTRACT OF THE DISCLOSURE A door construction for a microwave oven providing both a vapor seal and a seal against the escape of micro wave energy from the oven cavity and a modified venti- lating system for use therewith. ® It is an object of the present invention to provice a door construction for a microwave oven which permits viewing of the coments of the oven dut which neverthe- less prevenis escape of vepors and microwave energy from the oven cavity. It is 2 more specific object to pro- vide a door construction which serves as a highly efficient microwave and vapor shield, consisting of a minimum pumber of parts which are simply formed and easily assembled but which form a door which is structuraily strong and attractive in appearance. It is another object of the invention to provide a door which precludes flow of vapors through the perforations conveniionally em- ployed and which utilizes a modified ventilating system of ircreased effectiveness. Ovber odjects and advantages of the invention will become apparent upon reading the attached detailed de- scription end upon reference to the drawings in which: FIG. 1 is & front view of a range including a microwave oven incorporating the present invention; FIG. 2 is a back view of the door employed in the oven of FIG. 1; FIG. 3 is a section, broken for purposes of foreshorten- ing. looking along the line 3—3 in FIG. 1; FIG. 4 is a section taken along the line 4—4 in FIG. 1; FIG. 4a is a cross section taken through the conductive gasket; FIG. 5 is a fragmentary section taken through the latch mechanism and looking along the line 5—S in FIG. 1; FIG. 6 is a diagram showing the associated ventilating sysiem. While the invention has been described in connection with a preferred embodiment, it will be understood thas 1 do not intend to be limited to the particular embodi- ment dut intend, on the contrary, to cover the variouw, ahernative and equivalent constructions included within the spirit and scope of the appended claims. Turning now to FIGURE | there is shown a range 10 having a microwave oven 11 at the top with an oven cavity 12 and an adjacent control panel 13. Behind the control panel is a space for containing the microwave generating compcnents as well as a blower system to which reference will later be made. Arranged below the be carried on simultaneously. cavity 12 of the microwave oven has a liner 20 of conductive metal and which is con any openings except the perforations admission and exhausting of air and the gq 35 70 is flanged outwardly to provide a front facing 21 of conductive metal which completely surrounds the front opening of the cavity. In accordance with the present invention a door is provided for the oven having a peripheral frame and a conductive panel or liner which is centrally perforated and sealed by a rear cover glass, about which extends a continuous conductive gasket for engaging the facing of the oven cavity to prevent escape of boih vapor and mucrowave energy. Further in accordance wita the in- venticn a seat is provided im the front edge of the peripberal frame for mounting a front cover glass to produce a rigid box-like construction while enabling the con:emts of the oven to be clearly viewed. Thus, turning to the drawings, the door of the microwave oven. in- dicated at 30, has a peripheral frame 31 cf zicture frame shape including a side flange 32 and an inwardly extend- ing Gished flance 33 which is recessed to form a peripheral seat 34. Extending over, and enclosing, the entire rear surface of the frame 31 is a conductive liner panel 40, the centra] portion of which is punched with a two dimensional patte:n of perforations 41 and the periphery of which is formed with a side flance 42. The latter is dimensioned for snug telescoping within the side flange 32 of the door frame, with the two parts deing secured together by self-apping screws 43. If desired for further rigidity the inner flange of the frame ma; be provided with a series of integral pedestals 44 encaced by screws 45 which penetrate registering countersunk openings in the liner panel. For the purpose of covering the pattern of perforations 41, a rear cover glass $0 is used baving a continuous vapor scaling gasket £1 which is of resilient maierial of U-shaped cross section. When the cover glass 50 is seaied La position, the thickness of the vapor sealirg gasket de- fines a thin space 52 maintaining the glass out of contact with the metal panel over the region of tke perforations. To seal the liner panel with respect to the front facing 21 of the oven cavity, a continuous gasket 60 is used (FIG. 42) formed of resilient hollow tubing 61 which is surrounded by a wire mosh 62 stitched at 63 to define an anchoring web 64. The tubing is preferably made of heat-resistant synthetic rubber, for example of the silicone type, and the wire mesh may be of loos knitted con- 3 struction using a gauge of wire which is sufficiently thin to provide a high degree of flexibility and of sufficienldy wie mesh so as to preserve the vapor sealing effect of the rubber surface. The wire may, for example, be form- ed of a nickel-chromium alloy or of stainless steel. In accordance with one of the aspecis of the invention a subframe is provided surrounding the cover glass and having an inner clamping edge or flange which overlies end engages the peripheral edge of the cover glass and an outer clamping edge or lip which presses agains: the anchoring web 64 of the door sealing gasket 60. Referring to FIGS. 2 and 3, the subframe, indicated generally at 78, is formed of four separate sections 71-74 arranged closely end to end. The inner edge of each section has an integral lip or flange 75 which is suitably offset to accom- modate the thickness of the vapor sealing gasket 51 and cover glass; 50 while the outer edge of each section is pro- vided with a raised clamping lip 76 for providing a local- ized line of prevsure along the neck portion of the anchor. ing web 64 of the gasket 60. Each section is secured ia place on the liner panel by a central row of screws 77. Since the sections of the subframe are independent of one ‘another, each section is capable of self-adjustment, teeter- totter fashion, about the line of fastening so as to apply balanced concentrated forces to the cover giass and web of the gasket, respectively. The net effect is to insure that a sealing force is evenly applied about the ent’re peripb- port for admission of microwave energy. The oven liner ery of the cover glass while insuring that a good electrical A21 3,430,023 and mechanical connection is obtained aloug the lexgth of the conductive gasket 60. Ii has been found con®erient, in manfacture, to employ a simple jig for assembling the parts together. First the sec-ioas of the subframe ace laid io place on the jig, face doan, topped by the cover glass and the web of the conducive gasket. The liner ponel is then placed, face down, on the assembly with the ‘asten- ing screws 77 being imseru d and tightened. Follov ing this it is a simple matter to telescope the liner panel into posi- tion within the peripheral frame. To complete the assemt'y, an outer cover glass 80 is seated in the ledge 34 formed in the peripberal ‘-ame. The outer cover glass in exzzced along its left-hani edge by a flanged msert 8i and along its right-hand ecg: by a flange 82 integral!y formed in a panel 83. The cove: g'ass 80 is preferably silvered alo>z the edge as indicated a: 85, leaving a clear central porcon 86 for viewing throzzh the perforations 41 im the liner panel. For the purpose of mozn:ing the door on the ranze, and for exerting suffic.eni clarc>izg pressure in the closes posi- tion to compress the res: ‘22! gasket, I employ a simple form of binge 90 along ::e left-hand edge and a latch mechanism 91 at the rizhi-hand edge. While tie latch mechanism does not pe: % form a part of the r-resent invention, brief meniion m2y be made of the mes=iaism with reference to FIG. $. Heze it will be seen wat ibe mechanism 91 has a hant’e 92 which is pivoted a: 93. A toggle member $, a'so 7. o1ed at 93 has an ove>-~r is closed the catch 98. strik- ing the toggle member above its point of pivoting. causes the toezle member to scap over-gonal straps 116. 118. The corner penions ef the Outer strup 116 are brazed to the outer sides of alternate grooves, and the mid-portions of the sides of the inner Strap 218 cre crazed to the inner sides of the remaining Frooves. Inspection of FIGURE iv will show that the comer portions of the inner strap are locaed inwardly of respective grooves, and do not touch the ad)>cent inner wa'l of such grooves. .Also, the mid-portions of the sides of the Suter strap 216 pass through alemate grooves Without .vuching i.ny portion thereof, Tm addition, the shapes of the grooves 114 and straps 116, 11S facilitate assembly of the strops. The inner srap 118 preferably is dimensiored so that when it is siipped into the grooves. the nyid-portions of its sides are in fric- tional engacemert with the inner sides of the grooves to which such mid-portions are to be brazed. The strap is ttus restricted against anculur disp'acement prior to brazing. Also, since the bottoms of the grooves slope aws} from the sides thercof, the tct.om edges of the milf *:.ions of the sidcs of the strap 118 come to rest against the outer er.d of the V, ie, where the sides ond bovioms of the grooves are jcined. The corners or argles of the cuter sirap 116 are simi- Lrty located in position againt the outer sides of the grooves m which they are inserted. In essembly, the outer strap 116 is positioned with its corners aligned wit't those of the inrer strap 118. which automatically orien the trap 11€ properly for connection to alternate wares. As witb the other sirap, the shape of the growve 10 20 30 35 oo ‘ hd £ 7 so Timits inner movement of the strup 114. and hence serves to locate it properly for brazing. Also, the strap 116 pref- erably is dimensiored so that s!icht force has to be ex- erted to force it inwardly, whereby its corners frictionally engace the ouier sides of the grooves is, which they are located. Such corner poriions are then br: zed and secured in place. \ As previously indicated, the straps 116, 118 perform the usaa! mode stabilizing funciion. In this connection, my strap arrangement is one that is readi'y oJjcctsble after assembly to provide such corrections as are neces- sary for the desired mode stabilizaticn and resonance frequency. To this end, all that is necessary is to deform one or more portions of the straps intermediate tic peints at which they are brazed. Thus, one or more correr ror- tiens of the inner strap 118 and/or ore or more of the mid-portions of the sides of the strap 116 may be forced inwardly or outwardly to change the capacitance of the straps as needed. Since the straps are ribbon-like meta! cleiments, they retain such deformaiion. For exse of manefocture and assembi:. the pole pieces 99 are made identica!. As best seer ir FIGURE 9, each of the pole ricces is formed as a cylindrical element hav- ing a central openirz that has a sma!) cytinerics! portion 124, a fructo mest M: and the conzecticns to the ends of th> eix> cris 16. 18 sre Icads that evtend from the switch bovsins throosch the rear@f he compsament. from which ibe extend to and are secrred to the terminzis of the clevsents srajecurs 5 throuch the back ef the oven structure. From the fore -virg. it sil! be apr reat tht vanors mod.fciuons cor be made in the strecturcs Mustruted and desortod without ctparting from the spi: ond scope of m: invention. Accsorcing!y. Ide 20% intend that ey invea- 30 vicn & limited, except as by the appe-J22 clsirs. 2 . Icl>im: 1. In combization: &@ Microwave ca‘ty having operires to the evtcrior the-eof throush which to permit varor to pass. wherein sui! cavity is an o.en cham*er with a fromt doo-. said chamber heving tartom. ter. rear ard side wal's, the orcnings 20 the 2x- tericr of the cavity ceive in the top we': a conduit threzzh which te intradree micros ave cacres imo said cAVis. COMPrsizg a wavervile, $aig wa eovide c2jncent ons end hairs an ore+- ing. suid asvecuice being mounied exeric ly of the rear wall. said rear wail havirg an o7-n- ine sligned with the waveguide opening: antenna mear.. in ssid chamber; ap Ovtpet free: cxtendinz through said vaveruide Opes*ng ard coupled to said antenna mzans. said wavervids adjacent its other end havine a second Cpening throuch which to inirozuc: Mictow..e energy into the wa\ccuvice: & mapnetron having an output robe eatenting into Suid second cpening: means reisasahly holding said mapretror and wave- guide tocethes: and meurs to force air ‘hrough said conduit and ino the cavity at suTicie t pressure to keep vopor in the cavity from passing into saiz cond:it, such forced ar siding *he eszare of vapor through said opsnires. 2 The combination of claim 1, wherein said wavecuice kas an opening in s2id other end through which to cdmit air wo the waveruide: & pipe connection to ssid end openire: and fan means for Mowing air into suid pine consection ‘3. The combina:'30 of claim 1. whersin oi! ar.enna me:ns includes an element which is adzptea to ce bestec by clectr’c currert; means to supzly electric current to said element; a power supply for said mogrctron; and switch means operable for connectinr: sid e'emem to a source of electric current and fer connecting saic power sspply to said magnetron serarately or amultanesusiy. 4 The cor.bination of claim 3, inclucing means fo- Operating suid fan means at ail tim... during operatun of ia the switch bux, icr operatioa in different positions of ix 73 said swiich means A3l 3,440,336 §. The combivatioa of claim 1, wherein said magnetron has a cylindrical anode block, ssid mazreiron output probe extending out of the lateral surface of ssid block; a pair of pole pieces extemiing ovt of the ends of the block; 10 eiement having a face abutting iaid waveguide around said second waveguide opering, the radial dimension of sait face teing a: ‘east a qu2ner wave- length of the microwave enersy propagaied through said savegui«; and . an evzcuation tube extending out of one pole f-.ece; . mear evec dee dimeations plus grandes que calles | Condes, pe qu! coaduirait & des perturbations +, @q fe Gulstaldry -domestique sormple. Ele ue S cas Oh. Se Soe eed pe a disposer une fendtre didectrique avant la fente .,@tisine. Ea ovtre, gag sy gt couplage ow dane ta fente de conplage Kant dound '/ Micdétalree poor ta calage, le chambre gt be pram | que copie fendire coral, alle eusel, cowiliée at que See en repens f conedgrent, Mpdaptation serait endonumagie & micze- Zs. so SPOR ve ae 0,° .% . =i * S w. » 4 a ® . -~ ** . — » i= ~ e-- tansformatren distinct dont bee enroeleemens ercondgires soa! moatés ce eerie. Confornrvarat o Prmveation, Man des dewr tansformatrar haste tension, quant te tube electronique eu pret 4 functionner. demeure em permancace sous temainn cate primaire se teimion secondaire fournit « la cathe une charge peealable fable poe: laquelle Petat dive illation n'est pas encore afteint Comperee @ Teaccwtion normale avec un tran formaiewr heute tension seulement, cette dispnn) Don presente dew aventages importants bn raeor de la faible charge prealable de ta cathode evan! que seit attert Petat dos illatven bors de le mie en serve. en evite dune mannre sure ks pertur bathers pre Costes parce quien eppelle la « mated» du mummers! > ciuy maynetron Dy cote primaire de transforimateus haut jormpue \ magnetron est pret a entrer en aervice ¢ est.adir: chauffe. vl est presu une eerie de prises pour be wt vlace dew tensiome de eervice permet deflectur: ce régtape avec des movens de couplare fablement charges, ¢tant donne que fun dee trans formateurs montes en paraliele céte primaire ne besoin de transmetire que le moitie environ de la pulssance neceasaire caty haute tension LD) autres svantapes de cetic disposition de rearau resident en ee que le refroidesen ent est plus favorable en taron de lepanaeur plus faible dew different enroulemente et en ce qoe le hauteur de conatru: tron et le poids sont plue petite Sur les figures |e ton a repreeent* un exemp!. de reali ation de PTinvention. en tenant eompi- seulement des element« qui ent en rapport ave le four de le cuiminiere La figure 1 reprewnte be tour aver guide d'onde- et aver magnetron refroidi par Pair. tel qui! apparait a un olwerveteur regardant lea face arriere de la cuisiniere; Le figure 2 montre une coupe de leppareil faite suivant fa ligne A-R de le dgure 1: La figure 3 mortie achématiquement lee harreass du gril, dans cette réalination de l'appareil. l denigne bes parcie du four de le cuisiniére Le porte 2 ferme louverture du fowr. Le réchau! fenetonm ut re qui t tee diapositife aormaas powr te marche 4’ régime oo & régtine modéré du for. Le tron 5 est repréeenté avec son almant ct oe : i x i 3 Thee if te ‘i i iit ee hee FESS 4 A34 Ss See ose © 8 Ses ° gon! > Se «. ESSE: — act eet" aye aeeTes ™ “oe , ~ SH vee ‘ w z. ss » e: “a. aa, che SF ~~. .* = by > oe ad Fs *. - : a ns .» odes ~ — 2 on . 4 i 249.130) gtese & dun be tes 0. enate te an. S* La sone centrale de le plaque réfiéchisante teteur 10 soulie Pair de refroidissemeat eutre bes | cat em retrait et bes bords de cette plaque sont a - = . c e = *- » * . . ee . . M@ «as * . ee oh se Sane, dep «6 - oe — * * 5 ORR 8 *. o. ° “e* eg . oo ek a ha “» *9 “+? oe - - - . . . : -. 7% XY @ Sc ose 0 2. @s e - ae 2 "6 at Ses Ne - Yer-s Oo - a: ™ . ‘s > ef. - * ° ‘4 e , a ot ee ie ill as yy “+ es Ss ta 3? . Ny @-° . = ieee \y - ee Tact “3 7 ° US ene GO. SB « S°Y*.“S os , -— Gs. &€ aes OO ii. ‘ maniere ttle qual se forme ent.c la plaque réflechisante et be varoia qui en sont veisinen en interalle annulaire. © Pour des fine Padatation. on peut faire varver le distame entre ta plaque réBhinanie et le pars) letére.: portant le fente et. pour agir war be repartition de chamr dans be fowr. un neut faire varier bee largears de I'intervale annuaire, | , | ! recourbes ; 6° La peroi letérale, au voisinage dc be oe des fentern fait erillie, vers Verterieur. forme de cevetic: TH eet presu un refreidinement par vent: leteur pour be tule electronique genérateur et une partic de Vair de relrwidiasement est refoulee dans te guide dunes; & Les cirwit- dee elements cheuflants dipwose- dans be four et be cireunt du moteur du ventilateur pasent par un interrupteur commun. Lee bereweun du pril sont diepees dune manure telle que ledit gril cet permeable an champ cars ba direction ce peclaremation principal rrgnant clan. be four: heh da cri eet supporte par lee parce lateral dont if eat isole TP Dhan. te eas of eet pres un eouptac: ao demarrage et up Bet aa la pertee reseau den é@metteur cletrorique et or parteuler dun emettieur a magnetron: dan. lego! peur anediujue du tube eletroamique est subelivix deur aransformateurs distinets dont be enroul couplage de aervice le tea a-formateur haute ten-ren fa ten-ron er ment. wsoondeiues eont monte en ene. tun de- transformateurs heut> ten=ien. lorsque be tul~ eka tromque est vret a entrer en eernice. ast ee perma oraccerde cot) promaire a le tenes du twau cf sa tension secondaire a une valeur telle qu tl est fourm a le cathete une fartie charc- prealalle peour laquelle Peat duwillation nest). encore atteunt et Venrouler ent primaire du wor! transfurmateur est tanurd) en pleine march la tenswen du reweau: 12> Eh est preva c&e prumeiie du tran-Tormates haute tension, qui 6 Petu de d-marrace et ~ ! seus tension, ume erie de priws poor be revlace tes tensions cle marche secondaire: Socitet dire MTB AC MILROB ELLEN AC Pe precernae Seworwot, Riecty «@ Burceoe Re ee ee Re eee em wae de be Coerenten Pe 09>. ry ‘ ww. 6 * ¥ "Ee . ‘ ae ® “Nv » *- & ° e . ° : ‘ o s* - © a 3 5 . ad he f : zs ” edie. * NT a“ain“Yn“n“AndAm“N