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US 5,704,533 AGranted
Lever actuated stapler
OwnerChun Yuan Changinventor
Life of this patent
Estimating the term…
Abstract
A stapler includes a base and a chute and a cover pivotally coupled together at a rear pivot shaft. The base includes a roller extended downward beyond the middle portion. A lever includes a front portion pivotally coupled to the front portion of the cover and includes a rear handle for operating the lever, and including a block formed in the middle portion for engaging with the roller and for forcing the base toward the chute and the cover. The block includes a tapered surface for engaging with the roller and for allowing the user to operate the lever with less force.
Claims1
A stapler comprising:
- a base and a chute and a cover pivotally coupled together at a rear end with a pivot shaft, said cover including a front portion, said base including an inclined rear bottom and including a middle portion having a roller extended beyond said base, and
- a lever including a front portion pivotally coupled to said front portion of said cover at a pivot pin and including a rear portion having a handle for operating said lever, and including a middle portion having a block for engaging with said roller and for forcing said base toward said chute and said cover, said block including a tapered surface for engaging with said roller and for facilitating an operation of said lever.
Dependencies are inferred from the claim text.