3-篩選及標引后的專利著錄項目數(shù)據(jù)及專利全文us9120577b1

1、I 111111111111111111111111111111111111 IIIII llllllllll111111111111111 11111111US009120577Blc12) United States PatentBaic(IO) Patent No.:(45) Date of Patent:US 9,120,577 BlSep.1,2015(54) PRESSURE RELIEF LATCH1,880,251 A * 10/1932 Hornung292/1731,924,898 A * 8/1933 Anderson292/l73(71) Applicant: Avib

2、ank Manufacturing, Inc., North1,928,767 A * 10/1933 Schnell292/l73(72)(73)Hollywood, CA(US) Inventor: Zeljko Baic, Sylmar, CA (US)Assignee: Avibank Manufacturing, Inc., North Hollywood, CA(US)4,230,352 A *4,335,595 A *4,826,221 A *5,765,883 A *6,513,841 Bl*6,755,448 B2 *8,113,551 B2*8,740,147 B2*10/

3、19806/19825/19896/19982/20036/20042/20126/2014Sealey et al292/341.17Swan et al70/149Harmon.292/167Dessenberger et al292/92Jackson.292/214Jackson et al292/l 13Baic et al.292/l 13Defrance et al244/129.4(*)Notice:Subject to any disclaimer, the term of thispatent is extended or adjusted under 35U.S.C. 1

4、54(b) by 151 days.2011/0109103 Al*2013/0140832 Al* cited by examiner5/20116/2013Huston et al.292/l64Do.292/177(21)(22)Appl. No.: 14/035,706Filed:Sep.24,2013Primary Examiner - Kristina Fulton Assistant Examiner - Christine M Mills(51) Int. Cl.EOSC 1112(2006.01)B64D29/06(2006.01)(74) Attorney, Agent,

5、or Firm -R.Scott Kimsey, Esq.; Klein DeNatale Goldner(52)EOSC 19104U.S. Cl.(2006.01)(57)ABSTRACT(58)(56)CPCB64D 29106 (2013.01); EOSC19104(2013.01)Field of Classification SearchCPCE05B 65/102; E05C 19/04; E05C 19/02;E05C 19/06; E05F 1/002; E05F 1/006 USPC292/23, 126, 100, 226, 200, DIG. 49,292/143,

6、173, 93,193,256.69, 166, 145Seeapplication file forcomplete search history References CitedU.S. PATENT DOCUMENTSA pressure relief latch includes a housing fastenable to a first panel of a structure and a rotatable handle attached to the housing. The housing includes a compression spring that biases

7、a roller toward a second panel. A keeper assembly is attached to the second panel, the keeper assembly having a keeper extending therefrom. When the latch is in the closed position, the roller engages the keeper. When the handle is rotated upward, the roller disengages the keeper. A safety release m

8、ay be provided to prevent inadvertent rotation of the handle.1,593,372 A *1,873,560 A *7/1926 Thompson.292/1648/1932 Ekman. .292/33213 Claims, 4 Drawing Sheets. , 尸 ，? / ( ,L ,I. 1:1 ，、久如了！， f - 飛之,( 0 ,/ 2 II- i - -= , - .、 ，” -.C 廠 f / - 捉勹、，入 ，：之二之二二心2 .k.1 4 f ; - - r f . 3 丈上 .) ;, I ”、，矗 二 X r

9、- i ., 廣一 飛， ，、氣 、,I , , - J . J , L i .,. , I4.rI 3 . I . ，盧，盧”文， 廠，、凡令氣門心、,( , f a .L 怎卒，二氣飛巧. ,. .1 i. 扣“在令吼 p.rf I/ , , , f I ，盧氣飛）”一， ，覺；，、 I1 ；千、，、 , 口、 ， 盧 ，寸， - 5 、眾、斗“” 熾、,/ .)二又乙罩 II ，_ _ _ i.1_ _t i _l （甘什l. O lh l ，竹 , 夕 i 1 ltl 夕心 臥， -. t , ,已廠 ）笘一US 9,120,577illlf/ _ l. . _ 丁一勹，?。?， i 8

10、 甘夕，尸三，髦斗- - l /歹it K IIll11/ H l ! 1 _ _ 丿忖飛寸甘甘甘了二 呤* Ct 8 i 2 je - - t 芯 3 貯t / 孚I ix , i ff - - ,L/ ,4 iL 7 一和飛飛勹、 / j / ，；r / j門 、4/ ，勹笥 f ，fS , , y K 扂，多 ! ! r I/ -.勹鄉(xiāng)廠l ? 7 / 三，8 a 二、， 三阿三千.、8 i f ，、u.s PatentSep.1,2015g Sheet 1 of4,. / ( 8 屯f, / 、 、才/ i i：“，夕 / r億l ; I i 垃上/ f + j i O t 勹啖 今

11、, 八飛 、戾， 氣 J J r i / / / 僉廠J . $ 、 0 , IJ 、，、龜、- 多 i . .IL 芷王 ，、U.S. PatentSep.1,2015Sheet 2 of 4; l： 慫 i 卜年今 .g.， 心！ 1巒 夕、 US 9,120,577 Bl2Ol .,J ., r 閃 -、義; - 、.、 人 J(.)，、，、,.爐 ”-.、;-.- 寸 儼、”芷，J ,.I ，：8：， 、，又 . I夕 乒 i I3:1 :豆U.S. PatentSep.1,2015Sheet 3 of 4US 9,120,577 Blg 2 ii i ?r. C 1 J ;i .,1

12、 4 i 黛、 ”令寸、)、，.、-礙 -/,.f-,.貸 ,.,飛 竊）G 9l 1 . . rU.S. PatentSep.1,2015Sheet 4 of 4之， 夕，”，冬，喊汽、“ ，編 奇，女 ，-菜 （寸寸.、,., ， 、夕、,/, i 忒孜飛US 9,120,577 BlOlL 產(chǎn) . 心 ./ 少 . . , , / / ., . J i.l 9 , 2 r飛、 心 2 2 1 US 9,120,577 BlPRESSURE RELIEF LATCH RELATED APPLICATIONSNot Applicable.BACKGROUND OF THE INVENTION

13、enclosed structure. A cutout portion in the first attachment plate extends from the upper surface to the lower surface thereof.First and second support tabs may depend from the lower 5 surface of the attachment plate, at a first end of the attachment plate, and define a channel therebetween. The fir

14、st support tab defines a first elongate aperture therethrough, and the secondsupport tab defines a second elongate aperture therethrough1. Field of the Invention.First and second hinge plates may depend from the lower Thepresent inventionrelates generallytoalatch, andmore 10 surface of the attachmen

15、t plate at a second end of the attach-specifically to a pressure relief latch for use with an aircraft.ment plate, and may define a channel therebetween2. Background舊rst and second locking plates may depend from the lower Heated air, under high pressure, is generated during opera-surface of the atta

16、chment plate between the support tabs andtion of a modem aircraft. The air is directed through various 1, the hinge plates, and may define a channel therebetween.15structures in the aircraft for venting or to perform a variety of - A pivot pin may extend between the first hinge plate and thefunction

17、s for the aircraft. Pressure relief doors or panels are second hinge vided to allow pressure to vent when necessary, to preventThe locking pin may extend between the first locking plate failure of metal skin panels or other structures of the aircraft. and the second locking plate.The panels

18、 also allow for easy access to internal portions of 20 A roller support pin may extend from the first elongate these areas, so that routine maintenance and inspection opera- aperture of the first support tab to the second elongate aper- tions may be performed.ture of the second support tabOneexample

19、 of anaircraft component that benefitsfromaThe handle may be disposed within the cutout portion of pressure relief latch is the engine cowling. Aircraft engines the first attachment plate, and may be pivotably attached to havehighintemaloperatingpressure,andthecowlingisrated 25 the pivot pin and hav

20、e first and second spaced-apart hinge to a maximum pressure. As the internal pressure approaches members depending therefrom. The first and second hinge near to the maximum allowable pressure, it is desirable for the members may define a channel therebetween. The first and latch to open automaticall

21、y to prevent overpressure. Although second hinge members may each define an elongate aperture such a latch is not designed to open automatiiccaallllyyuuntiil a given therethroughhigh-pressure value is reached, maintenance and inspection 30 A handle pin may extend between apertures of the first and p

22、ersonnel require access to the interior of the cowling and second hinge members.should be able to open the latch easily when necessary.The safety release may be pivotably attached to the handle.SUMMARY OF THE INVENTIONA yoke may be attached to the roller support pin. The roller35 may be disposed on

23、the first side of the yoke.A pressure relief latch includes a housing fastenable to aA first spring plate may be attached to the second side of thefirst panel of a structure secured by the latch and a pivotable yokehandle attached to the housing. A compress10n spnng 1sA second spring plate may be at

24、tached to the handle pinattached to the housing and bias s a roller-in a first direction,A spring support may be attached to the first spring plate in a closed configuration.40 and the second spring plate and extend therebetweenA keeper assembly is fastenable to a second panel of theA first spring m

25、ay be disposed along the length of the structure to be secured by the latch. The keeper assembly spring support between the first spring plate and the second includes a keeper extending from the keeper assembly toward spring platethe roller.A second spring may be disposed along the length of the The

26、 pressure relief latch may include a safety release 45 spring support between the first spring plate and the second attached to the handle, such that when the safety release isspring plate. The second spring may have a diameter greater engaged upward rotation of thehandle is prevented, and when than

27、 the diameter of the first spring, with the second spring the safety release is disengaged upward rotation of the handle disposed within the first springis allowed, the upward rotation of the handle causing theThe keeper assembly may include a second attachment roller to move away from the keeper an

28、d the roller to disen- so plate with an upper surface and a lower surface. A plurality of gage the keeper. Once the roller disengages the keeper, at least openings may be provided in the second attachment plate for one of the panels may open.fastening the keeper assembly to the second panelThe safet

29、y release latch may include a hook and the pres-A keeper housing with a bore extending therethrough may sure relief latch may include a locking pin.extend from the lower surface of the second attachment plate. When the latch is ina closed position, the roller engages the 55The keeper may be disposed

30、 within the bore of the keeper keeper and the hook of the safety release engages the lockinghousing, extending from a first side thereof toward the roller, pin. The handle is thereby prevented from rotating in anwith the keeper engaging the roller when the latch is in aupward direction. When the saf

31、ety release is actuated, theclosed position hooks of the safety release disengage the locking pin, and thehandle is capable of being rotated in an upward direction. 60Rotating the handle in an upward direction causes movementBRIEF DESCRIPTION OF THE DRAWINGSof the roller such that the roller disenga

32、ges the keeper suffi-FIG. 1 is a top and side perspective view of an embodiment ciently to allow the opening of the pertinent panel.of a pressure relief latch shown in a closed configurationThe housing may include a first end and a second end, andFIG. 2 is a side elevation view of the pressure relie

33、flatch of a first attachment plate having an upper surface and a lower 65 FIG. 1.surface. A plurality of openings in the first attachment plateFIG. 3 is a bottom view of the pressure relieflatch of FIG allow for attachment of the housing to a first panel of an1.4 3 US 9,120,577 BlFIG. 4 is a top per

34、spective view of the pressure relieflatchwhen pressure relieflatch 10 is installed in a suitable structure of FIG. 1 shown in an open configuration.for its intended use. Handle 16 extends partially above andpartially below first attachment plate 88. Handle 16 includes DETAILED DESCRIPTION OF THE INV

35、ENTIONfirst hinge member 48 and second hinge member 50 (not5 shown in this view) extending downward therefrom, each In the course of thefollowing description, various relativeincluding an elongate aperture 44 defined therein. Hinge terms such as up, down, upper, and lower may beplates 74 and 76 also

36、 extend downwardly from the underside used to describe aspects of the present invention. As usedofhousing 12. Hinge plate 74 and hinge plate 76 each have an herein, these terms describe components of the present inven-aperture to receive a portion of pivot pin 58, which also tion as oriented in FIG.

37、 2, with attachment plate 88, for 10 extends through a portion of handle 16 so that handle 16 can ex 皿 ple, representing an upper portion of pressure reliefrotate therearound. Handle pin 34 extends between apertures latch 10. It is to be understood the these terms are used for44 in the first hinge m

38、ember 48 and second hinge member 50 purposes of clarity and for ease of understanding of the inven-and allows handle 16 to engage other structural components tion, and arenot intended to suggest any particular orientationof pressure relief latch 10 upon rotational movement ofof pressure relief latch

39、 10 when in use for its intended pur- 15 handle 16.pose.Safety release 40 includes hooks 28 and 29 that extendFIG. 1 provides a top and side perspective view of a pres-downwardly through cutout portion 92 of attachment plate sure relieflatch 10 having a housing 12 and a keeper assembly88. Hooks 28 a

40、nd 29 are shaped to form catches 26 for14. In operation, housing 12 and keeper assembly 14 arereceiving opposing ends of locking pin 36. When pressure affixed to separate doors or panels of a structure in which 20 relief latch 10 is in the closed position, locking pin 36 is pressure may increase. Fo

41、r exaniple, housing 12 and keeperreceivedwithincatches 26, locking pressurerelieflatch10 in assembly 14 may be fastened to opposing doors or panels ofthe closed position. Locking pin 36 extends between first an aircraft enginecowling. Housing 12 andkeeper assemblylocking plate 70 and second locking

42、plate 72 14eachincludeanattachmentplate(attachmentplates88andSprings 18 and 20 are disposed within housing 12 in a 90, respectively) having a plurality of openings 30 through 25 dual-spring arrangement, with second spring 20 disposed which fasteners may be inserted to attach housing 12 andwithinthei

43、nteriorspace of first spring18. Thesprings 18 and keeperassembly14 totheappropriatestructure.Anysuitable20 are positioned between first spring plate 62 and second fasteners may be used to effect the attachment.spring plate 64.Yoke 78 (best shownin FIG. 3) isattached toAlso visible in the view shown

44、in FIG. 1 is first compres-the side of first spring plate 62 opposite springs 18 and 20. sion spring 18 of housing 12. Handle 16 is associated with 30 Yoke 78 is maintained in position by roller support pin 38. housing 12 and disposed within cutout portion 92. SafetyYoke 78 has two extending arms th

45、at have roller pin 86 release 40 of handle 16 is shown, as are roller 22, and keeperextending therebetween. Roller 22 is mounted onrollerpin 86 24 extending from keeper assembly 14 toward roller 22. Asand can rotate freely between the arms of yoke 78 when latch shown in FIG. 1, pressure relief latch

46、 10 is in a closed con-10 is open and roller 22 and keeper 24 are disengaged figuration.35Keeper assembly 14 includes second attachment plate 90,舊 rst support tab 52 and second support tab 54 (not visible) from which keeper housing 60 extends in a downward direc- extend downwardly from attachment pl

47、ate 88, each having an tion. Keeper housing 60 has a central opening therethrough, elongate aperture 46 defined therein. Opposing ends of roller through which keeper 24 extends. An adjustment nut 100 support pin 38 extend through apertures 46 in first support tab extends from the other side of keepe

48、r housing 60, the adjust- 52 and second support tab 54. First compression spring 18 is 40 ment nut 100 being attached to keeper 24. A user of the shown within an interior space of housing 12. Spring 18 is pressure relieflatch 10 can adjust the latchs release point by contained between first spring p

49、late 62 and second spring turning adjustment nut 100 with a tool, thereby causing axial plate 64 (with only second spring plate 64 being visible in movement of keeper 24. Moving keeper 24 closer to roller 22 FIG. 1). First hook 28 is visible, extending downward from creates the release point, so tha

50、t greater pressure within the safety release 40. In the closed position, as shown, first hook 45 enclosure is required to cause pressure relieflatch 10 to open, 28 and second hook 29 (not visible) engage locking pin 36, as described in greater detail, belowwhich extends between first locking plate 7

51、0 and secondAs also shown in FIG. 2, first attachment plate 88 is secured locking plate 72, as shown in FIG. 2.to first panel 96 of the structure with which pressure relief 舊 rst hinge member 48 of handle 16 is shown, the hinge latch 10 is being used. Second attachment plate 90 is securedmember 48 including an elonga