Hydraulic pressure sensor

Details Hydraulic pressure sensor Hydraulic pressure sensor

2005-12-27

2005-12-27

Oen, William (Department: 2855)

Measuring and testing

Fluid pressure gauge

Piston

C073S745000, C073S746000

Reexamination Certificate

active

06978679

ABSTRACT:
A hydraulic pressure sensor for measuring the pressure in a hydraulic pressure chamber1.A reservoir housing9is connected to the pressure chamber, and the interior of the housing is divided by a slideable partition13which defines a reservoir chamber8which is connected to the pressure chamber and a sensor chamber7which is connected to a sensor element5.The partition13is constructed as a piston and extends for sliding movement along the walls of the reservoir housing while exerting a frictional force. A spring11supports the partition relative to the reservoir housing against the pressure in the reservoir chamber8.The partition13may be constructed as a differential piston, and consist of two or more piston sections13.1, 13.2, 13.3,which extend independently of one another in a sliding and sealing manner, and mutually support one another by an intermediate spring14.

REFERENCES:
patent: 3744316 (1973-07-01), Kuzyk
patent: 3999431 (1976-12-01), Makarainen
patent: 4203384 (1980-05-01), Silverwater
patent: 5483835 (1996-01-01), Ciolli
patent: 6050349 (2000-04-01), Rountree et al.

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