Diaphragm pump with overfill limiter

Details Diaphragm pump with overfill limiter Diaphragm pump with overfill limiter

2006-08-15

2006-08-15

Thorpe, Timothy S. (Department: 3746)

Pumps

Motor driven

Fluid motor

C417S385000, C417S388000, C417S386000, C096S129000, C096S110000, C096S013000, C092S084000, C092S096000, C092S101000, C092S09800R

Reexamination Certificate

active

07090474

ABSTRACT:
A diaphragm pump which overcomes the problem of diaphragm failure due to overfill of the oil transfer chamber. An overfill preventive element in the form of a mechanical stop, a fully closed coil spring, or a valve system, or alternatives are provided.

REFERENCES:
patent: 1976151 (1934-10-01), Thaheld
patent: 3416461 (1968-12-01), McFarland
patent: 3680981 (1972-08-01), Wagner
patent: 3769879 (1973-11-01), Lofquist, Jr.
patent: 3775030 (1973-11-01), Wanner
patent: 3884598 (1975-05-01), Wanner
patent: 3953154 (1976-04-01), Wanner
patent: 4430048 (1984-02-01), Fritsch
patent: 5667368 (1997-09-01), Augustyn et al.
patent: 5707219 (1998-01-01), Powers
patent: 6468056 (2002-10-01), Murakoshi
patent: 6582206 (2003-06-01), Schluecker

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