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Casement lock

  • US 6,161,881 A
  • Filed: 06/30/1999
  • Issued: 12/19/2000
  • Est. Priority Date: 06/30/1999
  • Status: Expired due to Term
First Claim
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1. A window and lock assembly for releasably locking a sash component of a window in a closed position with respect to a frame component, comprising:

  • a first keeper on said sash component;

    a second keeper on said sash component;

    a first catch mounted on said frame component and rotatably movable between locked and unlocked positions, said first catch for locking engagement with said first keeper when said first catch is in said locked position and said sash component is substantially in the closed position;

    a second catch mounted on said frame component at a spaced apart position from the first catch and rotatably movable between locked and unlocked positions, said second catch for locking engagement with said second keeper when said second catch is in said locked position and said sash component is substantially in the closed position;

    a slide bar connecting the first catch to the second catch whereby rotational motion of one of the first catch and second catch results in rotational motion of the other of the first catch and the second catch;

    said first and second catches each having a rotational position around the axis of rotation of the first and second catches respectively, wherein at the beginning of rotation of the first and second catches from unlocked position to locked position, the rotational position of the first catch relative to the axis of rotation of the first catch is different from the rotational position of the second catch relative to the axis of rotation of the second catch.

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