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US 9,151,080 B2Granted
Privacy latch
AssigneeJacou Industry Zhongshan Limited
InventorsJohn David Saunders, Yan Gao Wu
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to the field of door fittings, particularly door fittings comprising a privacy latch for a sliding door. In one particular aspect the present disclosure is suitable for use for securing interior or exterior doors, including doors for bathrooms, changing rooms, shower or toilet cubicles to give users the option of privacy. The present disclosure stems from the realization that smooth movement of a latch hook between a locked and unlocked condition can be obtained by use of a guide.
Claims12
A lock for a sliding door, the lock comprising:
- a drive member supported by a latch body, the drive member being adapted for movement in response to rotation of a spindle, the latch body having parallel first and second side surfaces, the surfaces each having separate first and second guide slots;
- and a link for imparting movement between the drive member and a hook, the hook having bosses projecting therefrom, each boss being received by a corresponding one of the first and second guide slots;
- wherein the first guide slots are associated with vertical and horizontal movement of the hook and the second guide slots are associated with vertical and horizontal movement of the hook, wherein an over center arrangement urges the hook between a locked position engaging a strike plate and an unlocked position wherein the hook is disengaged from the strike plate and at least partially retracted within the latch body, and wherein the bosses of the hook slide along the first guide slots and the second guide slots when the over center arrangement urges the hook between the locked position and the unlocked position.
A lock for a sliding door, the lock comprising:
- a drive member supported by a latch body, the drive member being adapted for movement in response to rotation of a spindle, the latch body having parallel first and second side surfaces, the surfaces each having separate first and second guide slots;
- and a link for imparting movement between the drive member and a hook, the link having a first end cooperating with a cam on the drive member and a second end cooperating with the hook, wherein the first guide slot of the first side surface receives a first boss projecting from the hook and the first guide slot of the second side surface receives a second boss projecting from the hook, the first guide slots are associated with vertical and horizontal movement of the hook, wherein the second guide slot of the first side surface receives a third boss projecting from the hook and the second guide slot of the second side surface receives a fourth boss projecting from the hook, the second guide slots are associated with vertical and horizontal movement of the hook;
- and wherein the first, second, third, and fourth bosses of the hook slide along the first guide slots and the second guide slots when an over center arrangement urges the hook between a locked position engaging a strike plate and an unlocked position wherein the hook is disengaged from the strike plate.
A lock for a sliding door, the lock comprising:
- a drive member supported by a latch body, the latch body having parallel first and second side surfaces, the surfaces each having separate first and second guide slots, the drive member being adapted for movement in response to rotation of a spindle;
- a hook having a first end adapted to engage and disengage from a strike plate in a door frame and a second end having a plurality of bosses projecting therefrom, each boss being received by a corresponding one of the first and second guide slots of the first and second side surfaces of the latch body;
- and a link for imparting movement between the drive member and the hook, the link having a first end cooperating with a cam on the drive member and a second end cooperating with the hook, wherein the bosses of the hook slide along the first guide slots and the second guide slots when an over center arrangement urges the hook between a locked position in which the first end of the hook engages the strike plate and an unlocked position wherein the first end of the hook is disengaged from the strike plate during operation.
Dependencies are inferred from the claim text.