Pump

Details Pump Pump

1998-09-11

2000-08-15

Yuen, Henry C.

Pumps

Expansible chamber type

Moving cylinder

417468, 4175551, F04B 1902, F04B 5300

Patent

active

06102676&

ABSTRACT:
A lance pump, particularly for lubricant, having a fixed plunger and a pump tube reciprocable in cycles through a downstroke and an upstroke on each cycle on the plunger, operable to deliver metered charges of lubricant on each downstroke as well as on each upstroke.

REFERENCES:
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patent: 2636441 (1953-04-01), Woelfer
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patent: 3469532 (1969-09-01), Wegmann et al.
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patent: 3945772 (1976-03-01), Van de Moortele
patent: 4243361 (1981-01-01), Groff
patent: 4487340 (1984-12-01), Shaffer
patent: 4762474 (1988-08-01), Dartnall
patent: 4804109 (1989-02-01), Vanderjagt
patent: 5009000 (1991-04-01), Wilmeth et al.
patent: 5692650 (1997-12-01), Wolter et al.

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