Invention Application
- Patent Title: HOLE PUNCH ELEMENT
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Application No.: US13290963Application Date: 2011-11-07
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Publication No.: US20120048093A1Publication Date: 2012-03-01
- Inventor: JOEL S. MARKS
- Applicant: JOEL S. MARKS
- Applicant Address: US CA CHATSWORTH
- Assignee: WORKTOOLS, INC.
- Current Assignee: WORKTOOLS, INC.
- Current Assignee Address: US CA CHATSWORTH
- Main IPC: B26F1/14
- IPC: B26F1/14

Abstract:
A hole punch device that reduces the force required to create a hole in papers or other sheet media. A punch element of the hole punch device includes a locally sloped or indented floor to create a bend in the sheet media as it is punched to create an enlarged, oval hole. The punch pin may include an expanding sleeve surround the pin that forms a larger diameter during the cutting stroke and springs back to a smaller diameter during a pull out stroke. A coiled torsion return spring is positioned remotely from and non-coaxially with the punch pin. A keyed pin and support frame arrangement ensures a predetermined rotational orientation of the pin for sequential cutting for reduced cutting force. A long lead-in surface in the frame helps installing sheet media into the feed slot of the punch element.
Public/Granted literature
- US08464620B2 Hole punch element Public/Granted day:2013-06-18
Information query
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