[특허]Window sash latch

[미국특허] Window sash latch 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E05C-003/14 E05C-003/00
출원번호	US-0971566 (2004-10-22)
발명자 / 주소	Liang,Luke
출원인 / 주소	Vision Industries Group, Inc.
대리인 / 주소	Bodner & O'Rourke, LLP
인용정보	피인용 횟수 : 26 인용 특허 : 15

초록 ▼

An improved window sash latch which has a locking mechanism and a keeper is provided with a handle that rotates from a "locked" to an "unlocked" position. An inner cavity of the handle has a spring assembly having a sliding part that can be forced into a detent as the handle slides around a cylindrical extension of an outer surface of the latch. The detents correspond to a "locked" and an "unlocked" position of the latch. The latch also provides two cams where both cams revolve relative to each other; one cam is activated by the handle through the handle's shaft, the other cam engages the keeper, and both cams engage each other.

대표청구항 ▼

What is claimed is: 1. A window latch securable to a window sash that provides a locking function to at least one sliding sash, comprising: a housing having an orifice thereon, a handle with a manually graspable portion, said handle having a shaft extending from said handle through said orifice in said housing, said shaft being secured to a locking mechanism, said locking mechanism comprising a first cam secured to said shaft, and a second cam said second cam having an orifice, said shaft passing through said orifice, said second cam being in contact with said first cam, and wherein when said locking mechanism is in an unlocked position, said first cam is adapted to rotate from a first locking mechanism position to a second locking mechanism position while rotating said second cam and said first cam being adapted to rotate from said second locking mechanism position to a third locking mechanism position without driving said second cam, and wherein when said locking mechanism is in a locked position said first cam is adapted to rotate from said third locking mechanism position to said second locking mechanism position without rotating said second cam, said first cam being adapted to drive said second cam from said second locking mechanism position to said first locking mechanism position when said first cam is rotated from said second position to a third position. 2. The latch according to claim 1 wherein said second cam has a groove in the surface of said second cam that receives a pin on said first cam said pin being adapted to engage the said second cam when said first cam rotates from said first locking mechanism position to said second locking mechanism position when said locking mechanism is unlocked. 3. The latch according to claim 2 wherein said pin does not engage said second cam when said first cam rotates from said second locking mechanism position to said third locking mechanism position. 4. The latch according to claim 3 wherein when said locking mechanism is in a locked position said pin is adapted to travel in said groove without engaging said second cam when said first cam rotates from said third locking mechanism position to said second locking mechanism position and said pin engages said second cam when said first cam moves from said second locking mechanism position to said first locking mechanism position. 5. The latch according to claim 4 wherein said second cam has a recessed portion for receiving a key of a keeper for locking said housing to said keeper. 6. The latch according to claim 5 wherein said first cam prevents said second cam from rotating when said second cam is accessed from underneath said housing. 7. The latch, according to claim 6, wherein said locking mechanism is configured so that said handle travels about 180 degrees from said locked position to said unlocked position. 8. The latch according to claim 7 wherein said shaft has a first cylindrical portion having a first diameter, a second cylindrical portion having a smaller diameter than the diameter of the first cylindrical portion and a third rectangular portion. 9. The latch according to claim 8 wherein said rectangular portion couple with an opening in said first cam. 10. The latch according to claim 7 wherein said second cam has a second groove that on a side of the cam that is adjacent to a protrusion on an interior surface of said housing and configured to mate with said protrusion to restrict the angle of rotation of the said second cam. 11. The latch according to claim 10 wherein said second cam has an opening through which said shaft passes that allows the second cam not only to rotate around its axis but also to shift relative to the housing and said first cam.

이 특허에 인용된 특허 (15) 인용/피인용 타임라인 분석

Mosch Duane L. (Owatonna MN), Check rail lock.
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Piltingsrud Stephen M. (Owatonna MN) Anderson Donald L. (Owatonna MN), Check rail lock and method of making check rail lock paintable after assembly.
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Eckhardt, Martin; Reitz, Reinhold; Alber, Helmut; Debus, Frank; Schaub, Bernhard, Fitting for a window or door.
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Piltingsrud Stephen M. (Owatonna MN), Forced entry resistant check rail lock.
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Eenigenburg,Mark B.; Pettit,Dean; Eiger,Aaron; Rote,Scott; Zeeb,Scott, Integrated tilt/sash lock assembly.
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Polowinczak,Allen D.; Annes,Jason L., Integrated tilt/sash lock assembly.
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Lawrence,Barry G., Locking window device.
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Marshik, Gary J., Methods and apparatus for a single lever tilt lock latch window.
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Rotondi Anthony J., Pick resistant sash lock.
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Wong, Lenny; Hendrickson, Leslie B., Rotatable actuator for latches of a window sash.
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Chaput Ivanhoe E., Sash lock.
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Coleman, John D.; Hufnagle, Raymond, Sash lock.
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Paulson Gary F. (Waseca MN) Vetter Gregory J. (Owatonna MN), Sash lock.
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Kelley, Timothy J.; Bogenhagen, David R., Tilt latch mechanism for hung windows.
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Anderson Donald L. (Owatonna MN), Window lock.
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이 특허를 인용한 특허 (26) 인용/피인용 타임라인 분석

Liang, Luke; Chen, David, Auto cam lock.
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Liang, Luke; Liang, Tong; Chen, David, Combination sash lock and tilt latch with improved interconnection for blind mating of the latch to the lock.
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Liang, Luke, Double-action, adjustable, after-market sash stop.
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Liang, Luke; Liang, Tong; Chen, David, Force entry resistant sash lock.
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Liang, Luke; Liang, Tong; Chen, David, Force entry resistant sash lock.
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Siverhus, Jeff; Gaston, Johannes N.; Koch, Kyle; Stoutenborough, Eric; Beaudry, Steven A., Handle for a lift and slide fenestration.
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Flory,Edward C., Integrated tilt/sash lock assembly.
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Liang,Luke, Keeper.
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Liang, Luke; Liang, Tong; Chen, David, Latch for tiltable sash windows.
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Liang,Luke, Sash lock.
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Liang,Luke, Sash lock.
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Liang,Luke; Liang,Tong; Chen,David, Sash lock and keeper.
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Flory,Edward C., Sash lock housing.
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Flory,Edward C., Sash lock housing.
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Flory,Edward C., Sash lock housing.
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Liang, Luke; Liang, Toni; Chen, David, Sash lock with condition signal.
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Wolf,Glen, Sash rail lock keeper.
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Liang, Luke; Liang, Toni; Liang, Toug; Chen, David, Tilt latch with cantilevered angular extension.
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Flory,Edward C., Tilt-latch.
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Farrell,Shelley Ellen, Window lock.
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Jones, Sherry L.; Dallmann, Brian, Window lock handle and cover.
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Liang, Luke; Liang, Tong; Chen, David, Window sash latch.
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Worrell, Jimmie W., Window sash latch.
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Liang, Luke; Liang, Tong; Chen, David, Window vent stop with flexible side engagement pieces.
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Liang, Luke; Liang, Tong; Chen, David, Window vent stop with flexible side engagement pieces.
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Liang, Luke; Liang, Tong; Chen, David, Window vent stop with plastic spring member for bi-directional biasing of the tumbler.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Window sash latch 원문보기