Grant F Walker

US Patent:

40715990, Jan 31, 1978

Filed:

Aug 20, 1973

Appl. No.:

5/390171

Inventors:

Grant W. Walker - Sacramento CA

Assignee:

Energy Absorption Systems, Inc. - Chicago IL

International Classification:

B29C 504
B29D 302

US Classification:

264311

Abstract:

A process for forming a tubular member includes rotating a tubular form about a central axis. The form is provided with an interior coating of time-setting, liquid material. A number of lengths or strips of roving, preferably of fiber glass, are introduced serially into the rotating tubular form in a direction substantially chordally of the tubular form so that each roving strip tends to be embedded approximately circumferentially by centrifugal force into the liquid material. The roving strips are approximately as long as the diameter of the tubular form and in effect make a helix. The material hardens with the roving embedded therein. The hardened material and roving are then removed as a tubular member from the stationary form. The product of the invention is a member of tubular shape comprised of a helix formed of substantially circumferentially extending lengths of fiber glass roving, each length being approximately the diameter of the tube, all embedded in a solid matrix of time-setting material.

US Patent:

46883746, Aug 25, 1987

Filed:

Mar 10, 1986

Appl. No.:

6/837906

Inventors:

Grant W. Walker - Sacramento CA

Assignee:

Essex Composite Wrap, Inc. - Rio Linda CA

International Classification:

B65B 4900

US Classification:

53587

Abstract:

A machine for wrapping sheet material around a circular-cylindrical pipe extending longitudinally and horizontally and supported along the bottom on a longitudinally and horizontally extending supporting roller or rollers has a table supporting the sheet material to extend between the bottom of the pipe and the supporting roller or rollers. The pipe is rotated by a motor-driven soft roller frictionally engaging the pipe and any sheet material around the pipe near one end and moving with the pipe away from the support roller or rollers as the wrapping material increases the diameter of the wrapped pipe.

US Patent:

40089150, Feb 22, 1977

Filed:

Jun 4, 1975

Appl. No.:

5/583683

Inventors:

Grant W. Walker - Sacramento CA

Assignee:

Dynamics Research and Manufacturing, Inc. - Sacramento CA

International Classification:

B60R 1904

US Classification:

293 60

Abstract:

An impact barrier designed specially to be installed at the rear of a vehicle such as a truck, has a generally rectangular, stiff enclosure open at the bottom. There is a support connected between the enclosure and the back of the vehicle so that the enclosure projects rearwardly behind the vehicle at about the expected area of impact of a following collision. Within the enclosure is a plurality of energy dissipating elements or cells arranged within the enclosure in substantial abutment with each other and with the enclosure sides. The dissipating elements are individually made of a frangible or powdering material. The enclosure support preferably includes a snubber for damping out vertical oscillations in the device.

US Patent:

39735966, Aug 10, 1976

Filed:

May 22, 1974

Appl. No.:

5/472190

Inventors:

Grant W. Walker - Sacramento CA

International Classification:

F16L 912

US Classification:

138174

Abstract:

A process of forming a tubular member includes rotating a tubular form about a central axis. The form is provided with an interior coating of time-setting, liquid material. A number of lengths or strips of roving, preferably of fiber glass, are introduced serially into the rotating tubular form in a direction substantially chordally of the tubular form so that each roving strip tends to be embedded approximately circumferentially by centrifugal force into the liquid material. The roving strips are approximately as long as the diameter of the tubular form and in effect make a helix. The material hardens with the roving embedded therein. The hardened material and roving are then removed as a tubular member from the stationary form. The product of the invention is a member of tubular shape comprised of a helix formed of substantially circumferentially extending lengths of fiber glass roving, each length being approximately the diameter of the tube, all embedded in a solid matrix of time-setting material.

US Patent:

49956132, Feb 26, 1991

Filed:

Sep 28, 1989

Appl. No.:

7/413955

Inventors:

Grant W. Walker - Sacramento CA

Assignee:

Spin-Alizer Corporation - Sacramento CA

International Classification:

A63B 6936

US Classification:

273183C

Abstract:

A moderately resilient, energy-absorbing practice golf ball and a process for manufacturing same are disclosed, the ball having a dense metal core surrounded with a thick layer of resilient material. To this, a fabric cover able to carry marking powder is bound. The practice ball leaves powder marks at its points of impact, and has a substantially reduced velocity upon rebound. The process of manufacturing the practice ball includes the steps of binding dense metal shot or granules together with resilient adhesive to form a core, wrapping uncured rubber strips into a thick layer around the core, pressing the surface of the layer to make it spherical; pressing a layer of textile fabric into the surface of the uncured rubber, curing the ball with elevated temperature and pressure to fuse its layers together and abrading the ball's fabric surface to raise a powder-carrying nap.

US Patent:

48893412, Dec 26, 1989

Filed:

Dec 15, 1988

Appl. No.:

7/284723

Inventors:

Grant W. Walker - Fair Oaks CA

International Classification:

A63B 6936

US Classification:

273176F

Abstract:

A golf swing analyzer is disclosed having, in combination, a teeing area with a teeing mat, foot planting mat and ball tee, a rigid, upstanding target board placed a short distance from the teeting area and rebound board disposed horizontally in front of the target board for receiving the rebound of a practice ball off the target board. This swing analyzer is used by driving a powder carrying, resilient, yet energy-absorbing, practice ball against the target board from the tee. The accuracy of the shot and the spin put on the ball are determined by analysis of the powder marks left on the target and rebound boards.

US Patent:

39441873, Mar 16, 1976

Filed:

Sep 13, 1974

Appl. No.:

5/505636

Inventors:

Grant W. Walker - Sacramento CA

Assignee:

Dynamics Research and Manufacturing, Inc. - Sacramento CA

International Classification:

A01K 300

US Classification:

256 131

Abstract:

A roadway impact attenuator adapted to be installed between lanes on a highway or in advance of a barrier on the highway includes a number of substantially identical units each of which has a framework slidably resting on the ground or pavement, and spaced from the barrier or from a similar framework. An energy converting means is disposed between the barrier and the framework. The framework is related to the ground by a ground anchor secured thereto and releasably connected to the framework. Additionally, overlapped side panels are mounted generally horizontally along the sides of the framework, being secured thereto and being secured to similar panels on other frameworks in a telescoping relationship.

US Patent:

48862754, Dec 12, 1989

Filed:

Dec 15, 1988

Appl. No.:

7/284722

Inventors:

Grant W. Walker - Sacramento CA

International Classification:

A63B 6936

US Classification:

273183C

Abstract:

A moderately resilient, energy-absorbing practice golf ball is disclosed having a dense metal-containing core surrounded with a thick layer of resilient material. To this, a fabric cover able to carry a marking powder is bound. This practice ball leaves powder marks at its points of impact, and has a substantially reduced velocity upon rebound.