Measuring and testing – Fluid pressure gauge – Electrical
Patent
1991-04-01
1992-05-12
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Electrical
73119A, 73706, 73756, 73DIG4, G01L 908, G01M 1500
Patent
active
051116995
ABSTRACT:
A pressure sensor particularly for measuring pressure within a diesel fuel pump comprises a screw-threaded bolt having a head and a shank and having a bore extending through the bolt through the head and shank. A transducer comprising a piezoelement is disposed in the bore, an electrical terminal extends from the bore through the head of the bolt, an electrical insulator is disposed between the transducer and bore, a threaded element positions one side of the transducer in the bore against the terminal, a spring in the bore extends from the shank end of the bore to bear against the opposite side of the transducer, and an incompressible material surrounds the spring in the bore to transmit a pressure force from a fluid pressure zone in the pump through the shank end of the bore to the transducer to provide a signal from the transducer representative of the pressure in the zone.
REFERENCES:
patent: 2068744 (1937-01-01), Gutzke
patent: 2454264 (1948-11-01), Stigter
patent: 3198013 (1965-08-01), Erdely
patent: 4483480 (1984-11-01), Yasuhara et al.
patent: 4621519 (1986-11-01), Phillips
Messtechnik, vol. 78, No. 1, Jan. 1970, (Munchen, Germany) W. Diehl "Beitrag zur statishen Eichung von piezoelecktrischen Druckaufnehmern mit Quarz und Turmalin", pp. 4-9. See p. 6, Par. 3.2; FIG. 4.
Kolling Arie J.
Walstra Hidde
Baumann Russell E.
Donaldson Richard L.
Grossman Rene E.
Texas Instruments Incorporated
Woodiel Donald O.
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