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 and latch comprising: a sliding sash;a latch plate;a housing secured to the sliding sash, the 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; a
1. A window and latch comprising: a sliding sash;a latch plate;a housing secured to the sliding sash, the 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; anda handle operatively coupled to the engagement element and being movable from a first position to a second position in the 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;wherein the handle is biased toward the first position only when the sliding sash is in a closed position; andwherein the handle is biased toward and retained in the second position only when the sliding sash is in the open position;wherein the engagement element is biased to the locked position by a first spring, the engagement element automatically moves from the unlocked position to the locked position when the sliding sash is moved to the closed position, the handle being operatively biased to the first position as the engagement element moves from the unlocked to the locked position;the latch plate being secured to a second sash, the handle having a front portion and a rear portion, the rear portion being closer to the second sash than the front portion, the handle pivoting about its rear portion as the handle is moved from the first position to the second position; andthe engagement element including a channel formed therein, the channel including a first wall and an opposing second wall, a second spring being located within the channel between the first wall and the second wall, the handle having an arm portion extending therefrom into the channel between the second spring and the second wall, the handle being operatively held in the second position by the second spring 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. 2. The window and latch of claim 1, wherein the handle automatically returns to the first position only when the engagement element is in the locked position. 3. The window and latch of claim 2, 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, the lockout stop member being biased by a third 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 position operatively releasing the engagement element. 4. The window and latch of claim 1, wherein the sliding sash includes a rail having an upper portion, the handle having a substantially planar upper portion that is substantially parallel to the upper portion of the rail that is perpendicular to the window when the handle is in the first position. 5. The window and latch of claim 4, wherein rail further includes a ledge extending from the upper portion of the rail in an outwardly and downwardly direction, the front portion of the handle extending from the upper portion of the handle in the same direction as the ledge, the handle pivoting relative to the rail at a position distal the front portion of the handle. 6. The window and latch of claim 5, wherein the front portion of the handle extends between a first portion and a second portion of the rail ledge. 7. The window and latch of claim 6, 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 at the rear portion of the handle, the handle having a portion extending into the upper portion of the rail through an opening in the bezel frame. 8. The window and 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. 9. The window and latch of claim 1, wherein the engagement element includes at least two separate elements that move independent of one another. 10. The window and latch of claim 9, wherein the housing guides the at least two engagement elements to move in a linear path between the locked and unlocked position. 11. A window and latch comprising: a sliding sash including a rail having an upper surface;a second sash, the sliding sash being movable relative to the second sash;a latch plate;a housing secured to the sliding sash, the 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; anda handle operatively coupled to the engagement element and being movable from a first position to a second position in the 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 having an upper surface that is substantially parallel to the upper surface of the rail, the handle including a rear edge, and an opposing front portion, the handle being operatively pivoted to the sliding sash proximate the rear edge of the handle, the front portion of the handle being closer to the second sash in the second position than in the first position;the handle being biased toward the first position only when the sliding sash is in a closed position; andthe handle being biased toward and retained in the second position with a biasing element only when the sliding sash is in the open position. 12. The window and latch of claim 11, wherein the rail includes a ledge extending from a front upper portion of the rail in an outwardly and downwardly direction, the front portion of the handle extending from the upper surface of the handle in the same direction as the ledge, the handle pivoting relative to the rail at a position distal the front portion of the handle. 13. The window and latch of claim 12, 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 at the rear edge of the handle, the handle having a portion extending into the upper surface of the rail through an opening in the bezel frame. 14. The window and latch of claim 13, wherein the upper surface of handle is no more than 0.250 inches from the upper surface of the rail. 15. The window and latch of claim 14, wherein a front edge of the ledge is located between a first portion and a second portion of the ledge. 16. A window and latch comprising: a sliding sash and a second sash,the sliding sash having a rail including a housing provided with 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;the rail including an upper surface extending perpendicular to the second sash;a handle having an upper surface, the handle is 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, the upper surface of the handle and the upper surface of the rail are parallel to one another when the handle is in the first lowered position;wherein the handle is operatively held in 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;wherein the handle is operatively held in the first lowered position when the engagement element is in the extended locked position;the rail including a ledge extending from the upper surface of the rail in a direction away from the second sash and in a direction opposite the first direction, the handle having a front portion extending from the upper surface of the handle in the same direction as the ledge;the engagement element being biased to the locked position by a first spring, the engagement element automatically moves from the unlocked position to the locked position when the sliding sash is moved to a closed position, the handle being operatively biased to the first position as the engagement element moves from the unlocked to the locked position;the engagement element including a channel formed therein, the channel including a first wall and an opposing second wall, a second spring being located within the channel between the first wall and the second wall, the handle having an arm portion extending therefrom into the channel between the second spring and the second wall, the handle being operatively held in the second position by the second spring 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. 17. The window and latch of claim 16, 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, the lockout stop member being biased by a third 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 position operatively releasing the engagement element.
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이 특허에 인용된 특허 (57)
Swanson ; Jr. Chester (43 Jackson Rd. Medford MA 02155), Automatic bolt lock.
Harvey John (Wellington NZX) Fuge Andrew George (Cheltenham GB2) Fifield Jon Leonard (Wainuiomata NZX) Walters Philip James (Wellington NZX), Skylight operator.
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