IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0521086
(2006-09-14)
|
등록번호 |
US-8182001
(2012-05-22)
|
발명자
/ 주소 |
- Tremble, John
- Liebel, Gordon
- Vilhauer, Kevin
- Blasé, Dan
- Rawls, R. Lee
- Duncan, James A.
|
출원인 / 주소 |
- Milgard Manufacturing Incorporated
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
57 |
초록
▼
A window latch for a sliding window having a sliding sash including a latch plate and a housing. The housing includes an engagement element movable relative to the housing from a locked position operatively engaged with the latch plate to an unlocked position disengaged from the latch plate. A handl
A window latch for a sliding window having a sliding sash including a latch plate and a housing. The housing includes an engagement element movable relative to the housing from a locked position operatively engaged with the latch plate to an unlocked position disengaged from the latch plate. A handle is operatively coupled to the engagement element and movable from a first position to a second position in a first direction corresponding to the direction the sliding sash to which the handle is attached moves to an open position. The handle operatively moves the engagement element from the locked position to the unlocked position as the handle is moved in the first direction toward the second position.
대표청구항
▼
1. A window latch for a sliding window having a sliding sash, the window latch comprising: a latch plate;a housing including an engagement element, the engagement element movable from a locked position operatively engaged with the latch plate to an unlocked position disengaged from the latch plate,
1. A window latch for a sliding window having a sliding sash, the window latch comprising: a latch plate;a housing including an engagement element, the engagement element movable from a locked position operatively engaged with the latch plate to an unlocked position disengaged from the latch plate, the engagement element having a channel formed therein; anda handle having an arm portion extending therefrom operatively coupled to the engagement element and being movable from a first position to a second position in a same direction the sliding sash moves to an open position, the handle operatively moving the engagement element from the locked position to the unlocked position as the handle is moved from the first position toward the second position;the handle being biased toward the first position only when the sliding sash is in a closed position;the handle being biased toward the second position by a first spring located in the channel of the engagement element, the handle being biased toward and retained in the second position only when the sliding sash is in the open position; and a second spring biasing the engagement element to the locked position;wherein the engagement element automatically moves from the unlocked position to the locked position when the sliding sash is moved to the closed position, and the handle automatically returns to the first position only when the engagement element is in the locked position, andthe engagement element channel including a first wall and an opposing second wall, a shuttle being located within the channel between the first wall and the second wall, the first spring being located within the channel and operatively connected to the shuttle and first wall, the handle arm extending into the channel between the shuttle and the second wall. 2. The window latch of claim 1, further including a lockout stop member operatively retaining the engagement element in the unlocked position while the sliding sash is not in the closed position. 3. The window latch of claim 2, wherein the engagement element includes at least two separate elements that move independent of one another. 4. The window latch of claim 3, wherein the housing guides the two engagement elements to move in a linear path between the locked and unlocked position. 5. The window latch of claim 4, wherein the engagement elements are a pair of bolts that slide independent of one another. 6. The window latch of claim 2, wherein the lockout stop member is biased by a spring to an engaged position operatively retaining the engagement element in the unlocked position, the lockout stop member including a portion that contacts a strike member on the latch plate that biases the lockout stop member to a disengaged and retracted position within the housing operatively releasing the engagement element, the lockout stop member only moving when a portion of the lockout stop member physically contacts the strike member. 7. The window latch of claim 6, wherein the handle is operatively held in the second position by the first spring element when the sliding sash is in the open position and the engagement element is in the unlocked position, the handle automatically returning to the first position when the sliding sash is in the closed position and the engagement element is in the locked position. 8. A sliding sash window in combination with the window latch of claim 1, wherein the housing is secured to a sliding sash. 9. The window and latch of claim 8, wherein the sliding sash includes an outer surface and an inner surface facing an outer surface of a second sash, the housing being secured to the first sash with a fastener only accessible on the inner surface of the sliding sash. 10. The window and latch of claim 8, wherein the sliding sash includes a rail, an upper portion of the handle having a substantially planar portion that is substantially parallel to the portion of the rail that is perpendicular to the window when the handle is in the first position. 11. The window latch of claim 10, further including a bezel frame located on an exterior portion of the first rail and connected to the housing, the handle being pivotally attached to the bezel frame and having a portion extending into the rail through an opening in the bezel frame. 12. A window latch for a sliding window having a sliding sash, the window latch comprising: an engagement element, the engagement element being slidably movable between an extended locked position and a retracted unlocked position, the engagement element being biased toward the extended position, the engagement element having a channel therein;a handle movable between a first position and a second position, the handle being operatively coupled to an engagement element,a stop member movable from an engaged position in which the stop member retains the engagement element in the retracted unlocked position to a disengaged position in which the engagement element is free to move to the extended locked position; anda latch plate configured to receive the engagement element in the extended locked position, the latch plate including a strike member configured to contract a portion of the stop member, the stop member being moveable to the disengaged position when a contact surface of the stop member contacts the strike member, and the stop member being biased to the engaged position when the stop member does not contact the strike member, the contact surface of the stop member extending out of the housing when the engagement element is in the retracted position and the contact surface of the stop member being moved toward the housing when the engagement element is in the extended position;a first spring configured to bias the handle toward the first position when the sliding sash is in a closed position; anda second spring configured to bias the handle toward the second position only when the sliding sash is in the open position, the engagement element having a channel including a first wall and an opposing second wall, a shuttle being located within the channel between the first wall and the second wall, the second spring being located within the channel and operatively connected to the shuttle and first wall, a portion of the handle extending into the channel between the shuttle and the second wall. 13. The window latch of claim 12, wherein the handle moves the engagement element to the retracted position as the handle is moved from the first position to the second position. 14. The window latch of claim 13, wherein the engagement element includes at least two bolts that slide independent of one another. 15. The window latch of claim 14, wherein the stop member is spring biased to the engaged position. 16. The window latch of claim 15, the handle moving in a first direction corresponding to the direction the sash to which the handle is attached moves to an open position, the handle moving the engagement element from the locked to unlocked position as the handle is moved from the first position to the second position. 17. The window latch of claim 16, wherein the handle automatically moves to the first position when the engagement elements are in the locked position, the handle being biased to the second position by the second spring when the engagement element is not in the locked position. 18. A sliding sash window in combination with the window latch of claim 12, including a sliding sash, the housing being secured to the sliding sash. 19. A window latch for a sliding window having a sliding sash, the window latch comprising: a housing including an engagement element releasably movable within the housing from an extended locked position engaging a latch plate, to a retracted unlocked position disengaged from the latch plate;a handle operatively coupled to the housing and movable in a first direction from a first lowered position to a second raised position, the first direction corresponding to the direction the sliding sash to which the handle is attached moves to an open position; andthe handle being spring biased by a spring to the second raised position only when the engagement element is in the retracted unlocked position and the housing is offset from the latch plate in the first direction, the engagement element having a channel including a first wall and an opposing second wall, a shuttle being located within the channel between the first wall and the second wall, the spring being located within the channel and operatively connected to the shuttle and the first wall, a portion of the handle extending into the channel between the shuttle and the second wall; andwherein the handle is operatively held in the first lowered position when the engagement element is in the extended locked position; the handle being free to move to the first lowered position by the application of force by a user without causing the engagement element to move from the retracted unlocked position to the extended locked position. 20. The window latch of claim 19, wherein the handle is movable from the second raised position to the first lowered position by the application of force by a person when the window sash is in the open position and the engagement element is in the retracted unlocked position, the handle automatically returning to the second raised position when the application of force is removed and the engagement element is in the retracted unlocked position and the housing is offset from the latch plate in the first direction. 21. The window latch of claim 20, wherein the handle is biased by the spring to the second raised position when the housing is offset from the latch plate in the first direction and the engagement element is in the retracted unlocked position. 22. The window latch of claim 21, wherein the handle is pivotally movable in the first direction to operatively move the engagement elements from the extended locked position to the retracted unlocked position. 23. The window latch of claim 22, further including a spring biased stop member movable from an engaged position to a disengaged position, wherein in the engaged position the stop member operatively retains the engagement element in the retracted unlocked position when the housing is offset from the latch plate in the first direction, and wherein when the stop member moves to the disengaged position the engagement element is automatically released to return to the extended locked position when the housing is aligned with the latch plate defining a closed position. 24. A sliding sash window in combination with the window latch of claim 19, including a sliding sash, the housing being secured to the sliding sash. 25. The window latch of claim 1, wherein the engagement element is a single element. 26. The window latch of claim 12, wherein the engagement element is a single element. 27. The window latch of claim 19, wherein the engagement element is a single element. 28. The window latch of claim 1, wherein the second spring is configured to bias the handle toward the first position when the sliding sash is in the closed position. 29. The window latch of claim 1, wherein the handle is movable independently from the engagement element from the second position toward the first position upon application of a force by a person to the handle when the sliding sash is in the open position, and wherein the handle is configured to automatically return to the second position when the application of the force is removed.
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