Measuring and testing – Fluid pressure gauge – With protective separator
Patent
1978-08-21
1980-01-22
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With protective separator
G01L 700
Patent
active
041843754
ABSTRACT:
A compensating bladder (30) for use in a pressure measuring device (10) for sensing pressure generated at a source. Pressure measuring device (10) includes a pressure responsive element (14) and pressure responsive structure (16) mounted within housing (12) for providing indications of pressures encountered at the source. The pressure responsive element (14) is connected by means of a socket (18), having an access opening (20), to the fluid source and for permitting pressure change to be sensed by the pressure responsive element (14). Compensating bladder (30) is disposed within the socket 18 to isolate pressure responsive element (14) from the fluid or gas entering the socket (18) and for forming a pressure transmitting chamber (66) that may be filled with a fluid. Compensating bladder (30) includes a generally longitudinal portion (44) and an integrally connected generally cylindrical portion (32). Compensating bladder (30) permits pressure changes at the source to be transferred to the chamber (66) and sensed without exposing the interior of element (14) to the fluid or gas undergoing measurement.
REFERENCES:
patent: 2207807 (1940-07-01), Hopkins
patent: 2244335 (1941-06-01), Hopkins
patent: 2481651 (1949-09-01), Fitzpatrick, III
patent: 2881617 (1959-04-01), Deis
patent: 3301063 (1967-01-01), Kisling et al.
patent: 3718046 (1973-02-01), McJones
patent: 4036216 (1977-07-01), Ramsey, III
Span Instruments, Inc.
Woodiel Donald O.
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