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US 2004/0000794 A1Published application
Laborsaving latch
OwnerFeng-Heh Wanginventor
Life of this patent
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Abstract
A laborsaving latch is provided, which includes a handle, a latch bar and a wave-shaped spring. With the laborsaving latch being mounted on a door, the wave-shaped spring is fixed to the door, the handle is rotatably connected to the door, and the latch bar is pivotally connected to the handle. As the handle is operated to rotate, a portion of the handle coupled to the wave-shaped spring would be shifted in position with respect to the wave-shaped spring so as to drive the latch bar to move.
Claims14
A laborsaving latch for use in a door, comprising:
- a wave-shaped resilient member fixed to the door;
- a handle rotatably pivoted at the door and movably coupled to the wave-shaped resilient member;
- and
- a latch bar pivotally connected to the handle and driven to move by rotation of the handle in a manner that, a portion of the handle coupled to the wave-shaped resilient member is adapted to be shifted in position with respect to the wave-shaped resilient member.
1 more element
A laborsaving latch for use in a door, comprising:
- a wave-shaped resilient member fixed to the door;
- a handle rotatably pivoted at the door;
- and
- a latch bar pivotally connected to the handle and movably coupled to the wave-shaped resilient member, wherein the latch bar is driven to move by rotation of the handle in a manner that, a portion of the latch bar coupled to the wave-shaped resilient member is adapted to be shifted in position with respect to the wave-shaped resilient member.
1 more element
Dependencies are inferred from the claim text.