Elongated-member-driving apparatus – With control means responsive to sensed condition
Patent
1981-04-29
1983-05-24
Bell, Paul A.
Elongated-member-driving apparatus
With control means responsive to sensed condition
227107, 29584, 294322, 29798, 72431, 100 53, B21J 702, B23P 1904
Patent
active
043846670
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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Goodsmith Dale H.
Smallegan Jon M.
Woods Harold T.
Bell Paul A.
Multifastener Corporation
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