Sensor for a variable displacement pump

Details Sensor for a variable displacement pump Sensor for a variable displacement pump

2005-02-01

2005-02-01

Freay, Charles G. (Department: 3746)

Pumps

Processes

C417S063000, C417S222100

Reexamination Certificate

active

06848888

ABSTRACT:
A sensor for a variable displacement pump is provided. The pump has a housing containing a swashplate that is adapted to rotate about an axis. The sensor includes a magnet connected to the swashplate to rotate with the swashplate. A semiconductor chip is disposed proximate the magnet and within the housing. A control is adapted to direct a current through the semiconductor chip and to determine the voltage across the semiconductor chip. The control is further adapted to determine the angle of the swashplate relative to the housing based on the determined voltage.

REFERENCES:
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patent: 5659485 (1997-08-01), Lee
patent: 6247900 (2001-06-01), Archibald et al.
patent: 6374722 (2002-04-01), Du et al.
patent: 6375433 (2002-04-01), Du et al.

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