Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1975-11-28
1978-08-22
Woodiel, Donald O.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73715, G01F 2314, G01L 708
Patent
active
041079965
ABSTRACT:
A gauge for measuring pressure is described having a casing, a transparent lens, a faceplate bearing indicia and indices, a primary depth pointer, a maximum depth pointer, and a rack-and-pinion gear assembly for moving the pointers relative to the indicia and the indices. In the rack-and-pinion gear assembly there is provided a spring-biased rack, a pinion gear and a flexible diaphragm. The pinion gear is mounted on a shaft supporting the primary depth pointer. The rack is threadably coupled to the gear and adapted to be moved linearly for turning the gear and the shaft. The diaphragm is mounted in a selected manner in a bore in the casing in contact with one end of the rack. The opposite end of the rack is in contact with a spring. A change in ambient pressure relative to the pressure within the casing moves the diaphragm and rack against the spring and rotates the pointers. The maximum pressure indiciator, which is driven by the primary depth pointer, is provided for indicating maximum pressure.
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Bellofram.RTM. Rolling Diaphragms & Basic Description, Specific Advantages, Typical Applications; Bellofram Corp.
Hollingsworth Ashley J.
Shamlian Ralph B.
Farallon Industries, Inc.
Woodiel Donald O.
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