Douglas B Firestone

US Patent:

D2584590, Mar 3, 1981

Filed:

Jun 8, 1978

Appl. No.:

5/913838

Inventors:

Douglas B. Firestone - San Diego CA

International Classification:

D2103

US Classification:

D21244

US Patent:

48893706, Dec 26, 1989

Filed:

May 31, 1988

Appl. No.:

7/200533

Inventors:

Douglas B. Firestone - Santee CA

International Classification:

F16C 2106

US Classification:

285342

Abstract:

A weldless pipe repair assembly comprises a cylindrical hub member having a through bore, the hub member being formed in two separable, mating parts for slidable interfitting engagement, a first one of the parts having a longitudinal slot for fitting the part transversely over a pipe in the area of a leak or rupture, prior to sliding the second part into engagement with the first part so that the hub member surrounds the pipe. At least one sealing sleeve is designed to fit in the hub bore to seal the space between the pipe and hub member, the sleeve being slit to allow it to fit over the pipe, and a locking assembly is provided for urging the sleeve into the hub member and sealing the sleeve against the pipe.

US Patent:

D2584603, Mar 3, 1981

Filed:

Jun 8, 1978

Appl. No.:

5/913837

Inventors:

Douglas B. Firestone - San Diego CA

International Classification:

D2103

US Classification:

D21244

US Patent:

D2567130, Sep 2, 1980

Filed:

Jan 10, 1978

Appl. No.:

5/868344

Inventors:

Douglas B. Firestone - San Diego CA

International Classification:

D2103

US Classification:

D21242

US Patent:

56160208, Apr 1, 1997

Filed:

Apr 26, 1995

Appl. No.:

8/430149

Inventors:

Douglas B. Firestone - Santee CA

Assignee:

Quik Pump, Inc. - Santee CA

International Classification:

F01C 1902

US Classification:

418138

Abstract:

A rotary vane pump comprising a housing having an inner cam surface defining a chamber and an inlet and an outlet port establishing fluid communication. A plurality of vanes are arranged substantially radially about a central vane axis of rotation. A rotatable carousel rotor is positioned on a drive axis displaced a predetermined distance from the central vane axis. The carousel has slot members positioned in it for reciprocally carrying each vane during the rotation of the vane. A one-piece central rotor gear is rotatably mounted on the central axis for pivotally coupling each vane at a point offset from the vane axis to establish rocking lever action between the carousel and the vanes upon rotation of the vanes.

US Patent:

D2564882, Aug 19, 1980

Filed:

Jan 10, 1978

Appl. No.:

5/868307

Inventors:

Douglas B. Firestone - San Diego CA

International Classification:

D2103

US Classification:

D21242