Perforator
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United States of America Patent
Stats
-
Nov 1, 1994
Grant Date -
N/A
app pub date -
Jan 8, 1991
filing date -
Dec 9, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A perforator has a perforator disk rotatably seated in a U-shaped bearing bracket. The bearing bracket is movable into and out of the path of movement of a piece to be perforated by a piston-cylinder unit which is actuated from either side of the piston. The piston-cylinder unit is housed in a fastening element which can be connected to a machine frame. The bearing bracket has guide bolts which extend into the fastening element to secure the bearing bracket against rotation in respect to the fastening element. The fastening element comprises a cylinder having a blind bore extending from the side of the fastening element facing the U-shaped bearing bracket in which a piston having seal rings is sealingly guided in a displaceable manner.
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