Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-12-11
1997-08-19
Swarthout, Brent A.
Communications: electrical
Condition responsive indicating system
Specific condition
340611, 280737, 73 37, G08B 2100
Patent
active
056592957
ABSTRACT:
A pressure indicating device (30) for providing an indication of the pressure that existed within a fluid filled pressure vessel (22) just prior to depressurization of the pressure vessel. The device comprises: a housing (102); a piston (130) for temporarily sealing an open end of the housing and outwardly movable in response to a pressure differential not less than a predetermined level generated subsequent to the depressurization of the pressure vessel; and a sheer disk (150) including a first part (160) attached to an end of the piston and a second part (162) attached to an end of the housing (102). The piston and the housing cooperate to define a pressure storage cavity (170) bounded by the piston and housing, the sheer disk (150) including a valve (164) for permitting the fluid within the pressure vessel to enter the pressure cavity and stabilize at a level substantially equal to the pressure level within the pressure vessel and for inhibiting a rapid decrease in the pressure within the pressure cavity immediately subsequent to depressurization of the pressure vessel.
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patent: 5140113 (1992-08-01), Machado
patent: 5257819 (1993-11-01), Frantom et al.
patent: 5313194 (1994-05-01), Varos
patent: 5404746 (1995-04-01), Ocker
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Bilbrey David A.
Ludeke Steven L.
Renfroe Donald
Rose James
Bendix-Atlantic Inflator Company
Seitzman Markell
Swarthout Brent A.
Trieu Van T.
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