Measuring and testing – Speed – velocity – or acceleration – With means for retaining reading
Patent
1974-02-04
1976-04-20
Woodiel, Donald O.
Measuring and testing
Speed, velocity, or acceleration
With means for retaining reading
73398AR, G01L 708, G01L 904
Patent
active
039509966
ABSTRACT:
A transducer useful to measure fluid pressure over a wide range incorporates dual diaphragms for biasing a shaft whose axial motion operates a motion sensor, the movement of one diaphragm limited in one direction of shaft axial movement, and the movement of the other diaphragm limited in the opposite direction of shaft axial movement.
REFERENCES:
patent: 2770258 (1956-11-01), Bowditch
patent: 3153935 (1964-10-01), Karlson
patent: 3222628 (1965-12-01), Pien
Haefliger William W.
Hydril Company
Woodiel Donald O.
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