Donald E Hendrickson

US Patent:

47169370, Jan 5, 1988

Filed:

Mar 25, 1987

Appl. No.:

7/030143

Inventors:

Donald W. Hendrickson - Corona CA

International Classification:

F16D 102

US Classification:

138 45

Abstract:

A fitting having a weakened section therein is positioned between a flow control device and a water outlet such as a sprinkler head so that if the sprinkler head is subjected to a lateral blow, the fluid conduit will break at the weakened section, but yet the flow out of the broken conduit will be restricted by the flow control device.

US Patent:

48300578, May 16, 1989

Filed:

Mar 18, 1987

Appl. No.:

7/027440

Inventors:

Donald W. Hendrickson - Corona CA

Assignee:

Hendrickson Brothers - Corona CA

International Classification:

F15D 102

US Classification:

138 45

Abstract:

A screened fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a combined screen and flow restrictor housing and a cap for sealing the restrictor in the housing.

US Patent:

48740179, Oct 17, 1989

Filed:

Mar 10, 1988

Appl. No.:

7/160727

Inventors:

Donald W. Hendrickson - Corona CA

International Classification:

F15D 102

US Classification:

138 45

Abstract:

A fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a flow regulator housing, a regulator within the housing and a cap for sealing the regulator in the housing.

US Patent:

41050509, Aug 8, 1978

Filed:

Oct 20, 1976

Appl. No.:

5/734227

Inventors:

Donald W. Hendrickson - Corona CA
James S. Howard - Riverside CA

International Classification:

F16K 1514

US Classification:

138 45

Abstract:

An integrally molded, elastomeric fluid flow restrictor for use in pipes to even the volumetric time rate of flow of fluid through a pipe regardless of applied fluid pressure. The restrictor has a flow passage orifice which elastically responds to compressional fluid pressure to vary in size inversely to applied pressure. The restrictor includes integrally attached to the main body upstream and downstream annular flanges of an outer diameter less than the main body diameter, thereby defining a shoulder on the main body, and the flanges have an inner diameter larger than the flow orifice. The shoulder of the main body is beveled slightly inward to seat against a fitting to provide a tight seal in actual operation. A fitting adapted to the restrictor which fits into a hydraulic system is also disclosed.

US Patent:

49711172, Nov 20, 1990

Filed:

Oct 3, 1989

Appl. No.:

7/416343

Inventors:

Donald W. Hendrickson - Corona CA

International Classification:

F15D 102

US Classification:

138 41

Abstract:

A screened fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a combined screen and flow regulator housing, a regulator within the housing and a cap for sealing the regulator in the housing.

US Patent:

52321606, Aug 3, 1993

Filed:

Apr 6, 1992

Appl. No.:

7/863864

Inventors:

Donald L. Hendrickson - Mira Loma CA
Glendale Grizzle - Corona CA

Assignee:

Hendrickson Bros. - Corona CA

International Classification:

B05B 130
B05B 1506

US Classification:

239276

Abstract:

A pressure reducer positioned in the lower portion of a housing reduces the inlet pressure of a source of irrigation water. The lower pressure liquid is ducted to a plurality of conduits, and the flow of water through these conduits is adjustable by individual valves supported on stakes positioned remote from the housing and connected to the conduits. A canister surrounds and supports an inlet riser connected to the housing, and a cup shaped cover fits onto the canister and encloses the housing.