Dispensing – With recorder – register – indicator – signal or exhibitor – Position or extent of motion indicator
Patent
1993-11-09
1995-01-03
Huson, Gregory L.
Dispensing
With recorder, register, indicator, signal or exhibitor
Position or extent of motion indicator
222153, 222518, 137197, 13761411, 13761419, 169 75, 169 76, B67D 522
Patent
active
053778723
ABSTRACT:
A valve, particularly useful in a fire extinguisher, includes a valve housing having a through bore. A valve stem is disposed within the bore and is axially moveable between a first position, a second position, and a third position. The valve stem includes a seal adjacent to the second axial end for sealing with the first section of the bore. A cap is disposed within the second section of the bore and is axially moveable between a first position and a second position. The cap includes a seal for sealing with the bore when the cap is in the first position. The cap seal is impermeable to solids and permeable to gas when the cap is in the first position.
REFERENCES:
patent: 1831193 (1931-11-01), Quitschalle
patent: 2570655 (1951-10-01), Druge
patent: 2931376 (1960-04-01), Hendel
patent: 3229851 (1966-01-01), Horwitt et al.
patent: 3536095 (1970-10-01), Demeter et al.
patent: 3861474 (1975-01-01), DePalma
patent: 4119153 (1978-10-01), Avant
patent: 4619328 (1986-10-01), Seyler et al.
patent: 4822003 (1989-04-01), Self
patent: 4862968 (1989-09-01), Woodman
Huson Gregory L.
Walter Kidde Portable Equipment Inc.
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