Pneumatic grease gun

Details Pneumatic grease gun Pneumatic grease gun

2007-01-30

2007-01-30

Huson, Gregory L. (Department: 3764)

Dispensing

With discharge assistant

Plural

C222S262000

Reexamination Certificate

active

11032157

ABSTRACT:
A pneumatic grease gun has a first compressed air chamber formed between a sleeve and a first piston set, and a second compressed air chamber formed between the sleeve and a second piston set so that the pressure of compressed air is double to increase the thrust force to push grease therefore make replenishment of fresh grease more effective. Moreover, grease is blocked by the two piston sets and the sleeve so that grease is prevented from returning and clogging the air vane and the life span of the pneumatic grease gun increases.

REFERENCES:
patent: 5685462 (1997-11-01), Barry
patent: 6494347 (2002-12-01), Yeh
patent: 2005/0230430 (2005-10-01), Linkletter et al.

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