Fastener installation tool and bolster assembly
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United States of America Patent
Stats
-
May 24, 1983
Grant Date -
N/A
app pub date -
Apr 29, 1981
filing date -
Apr 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The fastener installation head and bolster assembly of this invention is particularly adapted to assure constant installation pressure for fasteners installed in a reciprocating press die, such as pierce and clinch nuts. The fastener installation head includes a plunger supported on one die platen, a movable housing member which receives the fasteners to be installed, reciprocably supported on the plunger, and a die member supported on the opposed die platen, opposite the movable housing plunger passage. The bolster assembly includes a fluid pressure ram operably supporting the plunger between the plunger and the die platen having a source of constant fluid pressure and a plunger release which permits the plunger to recede when the press tonage exceeds the preferred fastener installation force.
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