Measuring and testing – Fluid pressure gauge – Bourdon
Patent
1996-04-26
1998-11-10
Chilcot, Richard
Measuring and testing
Fluid pressure gauge
Bourdon
7237023, G01L 704, B21B 1712
Patent
active
058346511
ABSTRACT:
In general, the invention features a spring assembly for a gauge with a hollow metal tube that changes in volume in response to differential pressures applied across the walls. The tube has a neck connected to a fitting of the gauge, a body connected at one end to the neck with its other end sealed, and at least a portion of the walls of the body being flattened and cold worked to a reduced thickness to thereby increase their yield point to a spring temper. The body is coiled into a spiral or helix. The coiled tube is heat treated to increase its elasticity. The interior of the neck is in pressure communication with the fitting, and the interior of the body is in pressure communication through its unsealed end with the interior of the neck, whereby a change in the pressure applied to the fitting is communicated along the interior of the body changing the differential pressure across the walls of the body to cause a corresponding change in the volume.
REFERENCES:
patent: 537588 (1895-04-01), Steinle
patent: 1521343 (1924-12-01), Townsend
patent: 1714988 (1929-05-01), Schlaich
patent: 1798645 (1931-03-01), Withers
patent: 2063166 (1936-12-01), Jansse
patent: 2495314 (1950-01-01), Caldwell
patent: 2522780 (1950-09-01), Dickson
patent: 3232116 (1966-02-01), Perkins
patent: 3382720 (1968-05-01), Young
patent: 3805619 (1974-04-01), Wunderlich
patent: 3840366 (1974-10-01), Hirayama et al.
patent: 3986400 (1976-10-01), Schmaus
patent: 4015478 (1977-04-01), Schmaus
patent: 4191056 (1980-03-01), Holden
patent: 4424083 (1984-01-01), Polizzoti et al.
patent: 4484698 (1984-11-01), Starr
patent: 4615219 (1986-10-01), Ache
patent: 4634429 (1987-01-01), Schoettley
patent: 4646406 (1987-03-01), Weiss et al.
patent: 4667517 (1987-05-01), Holden
Metals Handbook, Ninth Edition, vol. 3 Properties and Selection: Stainless Steels, Tool Materials and Special-Purposes Metals, pp. 47-48.
Lindeberg, M.R., "Engineer-in-Training Reference Manual", 8th edition, Professional Publications, Inc. 1992 pp. 37-7 and 37-8.
Marone Joseph T.
McSheffrey John J.
Moeller Mark W.
Amrozowicz Paul D.
Chilcot Richard
Mija Industries, Inc.
LandOfFree
Heat treated rapid response pressure gauge spring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat treated rapid response pressure gauge spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat treated rapid response pressure gauge spring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1518262