Elongated-member-driving apparatus – With randomly actuated stopping or disabling means
Patent
1990-08-08
1994-05-03
Jones, Eugenia
Elongated-member-driving apparatus
With randomly actuated stopping or disabling means
227111, B21J 1520
Patent
active
053079744
ABSTRACT:
A rivet tool is mounted on a bracket which can be moved vertically up and down suitable guides. To counterbalance the system an air cylinder supports the bracket and a precision pressure regulator responds very rapidly to continuously maintain a selected pressure in the cylinder. The tool will accordingly be maintained in a perfectly counterbalanced condition continuously.
REFERENCES:
patent: 3259352 (1966-07-01), Olsen
patent: 3955739 (1976-05-01), Markus et al.
patent: 4441643 (1984-04-01), McCutchen
patent: 4604930 (1986-08-01), Avila et al.
patent: 4754643 (1988-07-01), Weeks, Jr. et al.
Chitty Eymard J.
Rimkoski David S.
Emhart Inc.
Jones Eugenia
Murphy Edward D.
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