Casement assembly and a latch mechanism therefor
AssigneeJames Wilford Roberts
InventorJames Wilford Roberts
Life of this patent
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Abstract
A casement assembly comprising a casement frame defining a passageway in which is moveably mounted a closure element that can be moved to open and close the passageway relative to the casement frame. A latch is provided on the closure element for locking the closure element relative to casement frame. The latch includes a rotating cam having an eccentric surface that abuts an inner end of a laterally sliding rod whose outer end is brought into and out of interference with the casement frame to lock the moveable element with respect to the casement frame.
Claims27
A latch for a casement frame assembly comprising a casement frame defining a passageway and a closure element moveably mounted to the casement frame and closing at least a portion of the passageway, the latch comprising:
- a rod having opposing inner and outer ends and slidably mounted to the closure element for lateral movement between an extended position where the outer end is adapted to be in an interference relationship with one side of the casement frame, preventing movement of the closure element relative to the casement frame, and a retracted position permitting movement of the closure element relative to the casement frame;
- and
- a cam body having at least one eccentric surface with a short width side in a substantially constant, biased, abutting relationship with the inner end of said rod, and rotatably mounted to the closure element for rotation between a first position and second position for moving the rod between the retracted and extended positions, whereupon the inner end of the rod follows the eccentric surface of said cam body upon rotation of said cam body.
A casement assembly comprising:
- a casement frame defining a casement opening;
- a closure element movably mounted to the casement frame and closing at least a portion of the casement opening,
- a first rod having opposing inner and outer ends and slidably mounted to the closure element for lateral movement between an extended position where the outer end is adapted to be in an interference relationship with one side of the casement frame, preventing movement of the closure element relative to the casement frame, and a retracted position permitting movement of the closure element relative to the casement frame;
- and
- a cam assembly having a cam body with at least one eccentric surface having a short width side in substantially constant, biased, abutting relationship with the inner end of said rod and rotatably mounted to the closure element for rotation between a first position and second position for moving the first rod between the retracted and extended positions.
A latch for a casement frame assembly, comprising:
- a casement frame defining a passage;
- a closure element assembly moveably mounted to the casement frame and closing at least a portion of the passageway;
- a rod having opposing inner and outer ends and slidably mounted to the closure element for lateral movement between an extended position where the outer end is adapted to be in an interference relationship with one side of the casement frame, preventing movement of the closure element relative to the casement frame, and a retracted position permitting movement of the closure element relative to the casement frame;
- and
- means, including a cam assembly having a cam body with at least one eccentric surface, for rotating said cam body between a first position and a second position for moving the rod laterally between the retracted and extended positions by a substantially constant, biased, abutting relationship with a short width side of the cam body and the inner end of the rod and the inner end of the rod follows the eccentric surface until stop flanges are brought into contact with the rod to limit further rotation of the cam body.
Dependencies are inferred from the claim text.