Hole punching apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 20, 1999
Grant Date -
N/A
app pub date -
Sep 25, 1997
filing date -
Sep 25, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Hole punching apparatus for punching holes in thin sheet material and having a punch mounted for reciprocating movement. The punch includes a punch stem, and an elastomeric bumper mounted on the punch stem. The bumper acts as a shock absorber when the punch is moved in a first direction to punch a hole in the thin sheet material and eliminates collision of metallic parts as the punch reaches the end of its stroke.
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