Driving mechanism for plank clamp
OwnerFerng-Jong Liouinventor
Life of this patent
Estimating the term…
Abstract
A driving mechanism for plank clamp includes a gear set and a rack mounted on a clamp main body to mesh with each other, a first sleeve tightly mounted on a rotary shaft of the gear set, and a coupling arm mounted on a shank of the first sleeve. When the coupling arm is pivotally turned about the rotary shaft toward the clamp main body, the first sleeve and the gear set are caused to rotate at the same time, and the rack meshing with the gear set is caused to move backward toward the clamp main body. A movable jaw fixedly connected to a free end of the rack is therefore moved toward the clamp main body, which also function as a fixed jaw of the plank clamp, to a desired position to tightly clamp a plank between it and the clamp main body.
Claims7
A driving mechanism for plank clamp, comprising:
- a gear set including a gear and two wheels coaxially mounted on a rotary shaft, said two wheels having an outer diameter slightly larger than that of said gear and being located at two sides of said gear;
- a rack located below said gear set to mesh with said gear;
- a first sleeve mounted on said rotary shaft and including a head disc and a hollow shank integrally extended from one said of said head disc;
- a coupling arm including a hollow head portion to provide a second sleeve for receiving said shank of said first sleeve therein, and a lower portion forming an integral part of a handle;
- a clamp main body on which said gear set and said rack are mounted;
- and,
- a movable jaw fixed to said rack and movable with said rack toward said clamp main body.
Dependencies are inferred from the claim text.