Dipstick with pressure relief valve

Details Dipstick with pressure relief valve Dipstick with pressure relief valve

1976-10-06

1978-01-10

Phillips, Charles E.

Geometrical instruments

Area integrators

Electrical

G01F 2304

Patent

active

040671135

ABSTRACT:
A dipstick assembly including a pressure relief valve comprising a handle member having a passageway extending therethrough between the ends thereof, a measuring blade connected to the handle member, a sealing device for perfecting a seal between the dipstick assembly and an access tube adapted to receive the assembly and a valve located within the passageway of the handle member for maintaining a predetermined pressure within a vessel to which the access tube is connected.

REFERENCES:
patent: 1353193 (1920-09-01), Townsend
patent: 1668149 (1928-05-01), Hickman
patent: 1669776 (1928-05-01), Osburn
patent: 2333711 (1943-11-01), Dwiggins
patent: 3147554 (1964-09-01), Beattie
patent: 3377708 (1968-04-01), Gassman et al.
patent: 3991476 (1976-11-01), Haines

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