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US 6,644,161 B2Granted
Paper punch with multiple punch heads
AssigneeGino Lu
InventorChien-Fu Lin
Life of this patent
Estimating the term…
Abstract
A paper punch includes a base having a protrusion on a top thereof and three passages are defined vertically through the protrusion. Each of the passages has a punch head assembly received therein. A gap is defined between the protrusion and the top of the base. A handle has a groove defined therethrough and an index member is movably engaged with the groove so that the index member can be moved to a position above the chosen punch head assembly which is moved downward to punch papers in the gap by pivoting the handle.
Claims6
A paper punch comprising:
- a base having a protrusion on a top of said base and at least two passages defined vertically through said protrusion each of said at least two passages having a punch head assembly received therein, a gap defined between said protrusion and said top of said base, and
- a handle having a groove defined therethrough and said groove located in alignment with said at least two passages, an index member having a ridge which is movably engaged with said groove and a knob movably mounted on said handle and fixed to said ridge.
A paper punch comprising:
- a base having a protrusion on a top of said base and at least two passages defined vertically through said protrusion and each of said at least two passages having a punch head assembly received therein, a gap defined between said protrusion and said top of said base, each punch head assembly including a base member and a punch blade, a top of said punch blade being higher than a top of said base member, and
- a handle having a groove defined therethrough and said groove located in alignment with said at least two passages, an index member movably engaged with said groove, two peaks extending from an underside of said index member and respectively contacting two respective tops of said base member and said punch blade.
Dependencies are inferred from the claim text.