Dispensing – With discharge assistant – Container with follower
Patent
1979-09-06
1981-01-27
Scherbel, David A.
Dispensing
With discharge assistant
Container with follower
92240, G01F 1100
Patent
active
042470234
ABSTRACT:
A follower assembly for a lubrication gun that effectively seals in either the gun cylinder after bulk-loading of the lubricant, or a smaller diameter lubrication cartridge positioned alternatively in the gun cylinder. The primary element of the follower assembly is a one-piece elastomeric follower body slidably received on a follower rod in the gun cylinder. This elastomeric follower body has a heavy central portion with a thin forwardly extending outer wall that seals against different diameter bores. The forward end of this thin outer wall has a heavy inwardly directed flange portion that stabilizes the thin wall. A plurality of forwardly projecting posts on the heavy central portion of the follower body engage this flange to pull the thin wall when the follower assembly moves forwardly. The follower rod, during manual priming, moves the follower body forwardly by engagement between a projection on the rod and a back-up plate behind the follower body, and rearwardly by engagement of a washer carried by the rod with the front of the follower body.
REFERENCES:
patent: 2394488 (1946-02-01), Rotter et al.
patent: 2872085 (1959-02-01), Mueller
patent: 2886215 (1959-05-01), Klein et al.
patent: 2985495 (1961-05-01), Neuman
patent: 3059819 (1962-10-01), Sundholm
patent: 3092427 (1963-06-01), Sadler et al.
patent: 3215320 (1965-11-01), Heisler et al.
patent: 3286887 (1966-11-01), Sundholm
patent: 3501063 (1970-03-01), Sundholm
patent: 3655101 (1972-04-01), Dorn
patent: 3780830 (1973-12-01), Helgerud et al.
Douvas Augustus G.
Scherbel David A.
Stewart-Warner Corporation
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