Dispensing – With recorder – register – indicator – signal or exhibitor – Position or extent of motion indicator
Patent
1989-11-20
1992-06-23
Shaver, Kevin P.
Dispensing
With recorder, register, indicator, signal or exhibitor
Position or extent of motion indicator
222137, 222389, B67D 522, B67D 546, B67D 552
Patent
active
051235684
ABSTRACT:
The dispensing appliance customarily built in "pistol form" for double cartridges with plungers has a pressure medium-driven cylinder unit with rams extendings from a piston for the forward drive of the plungers. In order to prevent "tilting" or jamming of the piston in the cylinder, a rigid longitudinal guide is provided between both cylinder ends against which guide the piston is slidingly supported with a longitudinally extending guide bore. The longitudinal guide simultaneously reinforces the cylinder and feeds the pressure medium into the pressure chamber behind the piston by way of a longitudinal channel. Further, a retrieval mechanism for the piston for ram relief after each forward thrust as well as an indicator element for the cartridge fill-level, are provided. The indicator element includes a long rod that connects to the piston and extends through the cylinder and its cylinder wall adjacent to the cartridge. A moving indicator is visible in a guideway that is co-extensive with the cartridges.
REFERENCES:
patent: 14734 (1856-04-01), Palmer
patent: 1259146 (1918-03-01), Shields
patent: 1459606 (1923-06-01), Stohlman
patent: 1576640 (1926-03-01), Enos
patent: 3325061 (1967-06-01), Ellsworth
patent: 3749284 (1973-07-01), Kloehn
patent: 3782598 (1974-01-01), Basa
patent: 3980209 (1976-09-01), Collar
patent: 4676410 (1987-06-01), von Flue
patent: 4898302 (1990-02-01), Byerly et al.
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