Paper punch
OwnerChien-Chuan Huanginventor
Life of this patent
Estimating the term…
Abstract
A paper punch includes a first arm which includes two side portions pivotably connected to two frames on a base and each side portion has a first oval hole. Two second arms are pivotably connected with the two first oval holes by two connection pins and each of the two second arm has a second oval hole. Two punch heads are connected to the two second arms respectively and movably inserted into the two frames. The two side portions of the first arm are pivotably connected to the two respective rear ends of the two frames. The two second oval holes of the two second arms are pivotably connected to the two respective front ends of the two frames. The distance between the connection pin and the first pin is reduced when the first arm is pivoted downward so as to achieve the purpose of saving energy.
Claims10
A paper punch comprising:
- a first arm having two side portions and two first oval holes respectively defined through the two side portions;
- two second arms pivotably connected with the two first oval holes of the two side portions of the first arm and each of the two second arms having a second oval hole;
- two punch heads connected to the two second arms respectively, and
- a base having two frames and each of the two frames having a front end and a rear end, the two side portions of the first arm pivotably connected to the two respective rear ends of the two frames, the two second oval holes of the two second arms pivotably connected to the two respective front ends of the two frames, the two punch heads located within the two frames.
Dependencies are inferred from the claim text.