David Ruxton — 7 Patents at Hydraforce

David Ruxton has been granted 7 US patents while listed as an inventor at Hydraforce. The first was granted in 1983 and the most recent in June 2024. David Ruxton ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list David Ruxton in Crickhowell, IL, GB.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12012978	Hydraulic cartridge valve with position monitoring mechanism and hydraulic control system and method	Travis Schmidt, Thomas Ptak, Scott Wickboldt	2024-06-18
10626986	Hydraulic motor drive system for controlling high inertial load rotary components	—	2020-04-21
4524397	Head positioning system for a disc data store	Brian D. Chalmers, Kenneth L. Miller	1985-06-18
4518904	Stepper motor control for data disk system	Nigel Macleod	1985-05-21	$178,000
4489259	Method and apparatus for controlling a stepper motor	James N. White, Alec D. Stewart	1984-12-18
4484124	Method of and apparatus for damping of stepper motor using non-active windings	James N. White, Alec D. Stewart	1984-11-20
4392095	Method of and apparatus for generating a unique index mark from the commutation signal of a D.C. brushless motor	Alex Stewart	1983-07-05

David Ruxton — 7 Patents

Issued Patents All Time

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