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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Chivens; Donald R.
Address:
Northridge, CA
No. of patents:
8
Patents:












Patent Number Title Of Patent Date Issued
4753256 Pool cleaner hose June 28, 1988
An improved pool cleaner hose is provided for use in supplying water under pressure to a water-powered in-the-pool cleaner device for swimming pools and the like. The hose is formed from one or more elongated spiral wound strips of flexible plastic material or the like with adjacent turn
4734954 Pool scrubber device April 5, 1988
A water-driven scrubber device is used particularly in scrubbing wall and floor surfaces of a swimming pool or the like. The scrubber device comprises a compact housing adapted for connection to a supply of water under pressure and encasing a water-driven turbine wheel in combination
4714508 Fixture and method for making spiral wound hose December 22, 1987
An improved fixture and related method are provided for making spiral wound hose from elongated strips of thermoplastic material. The fixture includes feed rollers for spirally winding inner and outer interlocking strips from opposite directions onto a rotating mandrel. As the strips are
4589986 Pool cleaner May 20, 1986
An improved pool cleaner is provided of the type for submerged random travel generally along the floor and sidewalls of a swimming pool to dislodge and collect debris. The pool cleaner comprises an hydraulically contoured housing consisting of a limited number of shell shaped housing
4558479 Pool cleaner December 17, 1985
An improved pool cleaner is provided of the type for submerged random travel generally along the floor and sidewalls of a swimming pool to dislodge and collect debris. The pool cleaner comprises an hydraulically contoured housing consisting of a limited number of shell shaped housing
4522221 Timed flow control valve assembly June 11, 1985
A flow control valve assembly is provided for timing and regulating fluid flow from a valve inlet to primary and secondary fluid flow outlets. The valve assembly comprises a regulator valve which, upon initiation of fluid flow to the valve assembly, is spring-biased to open the primary a
4395920 Digital stylus force gauge August 2, 1983
A device for measuring small units of force or weight, such as the tracking force of a phonograph cartridge, includes an elastic flexure member having an electric contact for engagement with an encoder. As the flexure member is deflected by an amount proportional to the force being measu
4105341 Print element having flexible characters August 8, 1978
A print element for use in high speed printing machines, having a plurality of metallic print characters which are substantially flat and are flexible. The characters are struck by a hammer surface which is curved so as to conform to the curvature of the platen upon which the characters










 
 
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