Dispensing – With discharge assistant – Container with follower
Reexamination Certificate
2005-04-26
2005-04-26
Nicolas, Frederick (Department: 3754)
Dispensing
With discharge assistant
Container with follower
C222S261000, C222S334000, C184S105200
Reexamination Certificate
active
06883687
ABSTRACT:
Continuously shooting pneumatic grease gun structure including an air chamber housing defining an elongated air chamber. A push hole extends from the air chamber through one end of the housing to an outer side. A piston is reciprocally axially movably disposed in the air chamber between a start position and an end position. A grease push rod is coaxially fitted in the push hole and synchronously movable along with the piston. A restoring spring is compressed between the end of the housing and the piston to resiliently keep the piston in the start position. A controlling valve is movably disposed on the housing between an open position and a close position. A shift air passage is formed in the body section controlling the air in the air chamber and moving the controlling valve from an open position to a closed position.
REFERENCES:
patent: 2175522 (1939-10-01), Ginter
patent: 2259857 (1941-10-01), Ostendorf
patent: 2505839 (1950-05-01), Scovell
patent: 5779105 (1998-07-01), Brown et al.
patent: 6290106 (2001-09-01), Kuo
patent: 6494347 (2002-12-01), Yeh
patent: 6585135 (2003-07-01), Yeh
patent: 6736292 (2004-05-01), Grach et al.
patent: 20030222104 (2003-12-01), Chuang
Nicolas Frederick
Troxell Law Office PLLC
LandOfFree
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