Window sash latch
AssigneeVision Industries Group, Inc.
InventorLuke Liang
Life of this patent
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Abstract
An improved window sash latch which has a locking mechanism and a keeper is provided with a handle that rotates from a “locked” to an “unlocked” position. An inner cavity of the handle has a spring assembly having a sliding part that can be forced into a detent as the handle slides around a cylindrical extension of an outer surface of the latch. The detents correspond to a “locked” and an “unlocked” position of the latch. The latch also provides two cams where both cams revolve relative to each other; one cam is activated by the handle through the handle's shaft, the other cam engages the keeper, and both cams engage each other.
Claims11
A window latch securable to a window sash that provides a locking function to at least one sliding sash, comprising:
- a housing having an orifice thereon, a handle with a manually graspable portion, said handle having a shaft extending from said handle through said orifice in said housing, said shaft being secured to a locking mechanism, said locking mechanism comprising a first cam secured to said shaft, and a second cam said second cam having an orifice, said shaft passing through said orifice, said second cam being in contact with said first cam, and wherein when said locking mechanism is in an unlocked position, said first cam is adapted to rotate from a first locking mechanism position to a second locking mechanism position while rotating said second cam and said first cam being adapted to rotate from said second locking mechanism position to a third locking mechanism position without driving said second cam, and wherein when said locking mechanism is in a locked position said first cam is adapted to rotate from said third locking mechanism position to said second locking mechanism position without rotating said second cam, said first cam being adapted to drive said second cam from said second locking mechanism position to said first locking mechanism position when said first cam is rotated from said second position to a third position.
Dependencies are inferred from the claim text.