David P Vincent

US Patent:

40700194, Jan 24, 1978

Filed:

Dec 8, 1975

Appl. No.:

5/638743

Inventors:

Charles L. Segal - San Diego CA
Michael G. Anderson - San Diego CA
David N. Vincent - San Diego CA

Assignee:

Groves-Kelco Sales, Inc. - Minneapolis MN

International Classification:

A63B 4910

US Classification:

273 73F

Abstract:

A laminated game racket frame having a closed hoop-shaped inner frame and an outer frame with the outer part of the inner frame integrally bonded to the inner part of the outer frame to form a unitized body, each frame being formed as a laminate comprised of a plurality of strips. Some of these strips are made of wood, thermoplastic resin or metal, and some are made as laminates themselves from plies of reinforced thermosetting resins.

US Patent:

41044371, Aug 1, 1978

Filed:

Sep 8, 1975

Appl. No.:

5/611205

Inventors:

David N. Vincent - San Diego CA
Cheng-Hsiung Chang - Naperville IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

B32B 326

US Classification:

428307

Abstract:

A chromogenic compound having the structural formula ##STR1## wherein R. sup. 1 and R. sup. 2 each represent an alkyl group; R. sup. 3 and R. sup. 4 each represent a hydrogen atom, a halogen atom, an alkyl group, a nitro group, an amino group, an acyl group, or a carboalkoxy group; R. sup. 5 represents a hydrogen atom or an alkyl group, with the proviso that R. sup. 5 represents an alkyl group only when R. sup. 4 represents a hydrogen atom; R. sup. 6 represents an alkyl group, an aryl group or an aralkyl group; and X and Y each represent a hydrogen atom, a halogen atom, a nitro group, a lower alkyl group, an aryl group, an alkoxy group or a carboalkoxy group. The aforesaid compound may be provided in a pressure-sensitive copy system wherein a visible image is formed upon reaction of the above chromogenic compound with an electron-accepting material of the Lewis acid type.

US Patent:

40031365, Jan 18, 1977

Filed:

Feb 3, 1975

Appl. No.:

5/546441

Inventors:

David N. Vincent - San Diego CA
Charles L. Segal - San Diego CA

International Classification:

F26B 700

US Classification:

34 12

Abstract:

A method for drying and recovering polyethylene waste material is disclosed. In the preferred procedure, the raw waste material is defiberized, dried in a novel manner, and then pelletized into the finished product which is suitable for plastic processing. The drying process for the waste material provides for temperature control of heated air at specific places.

US Patent:

D2464748, Nov 22, 1977

Filed:

Oct 31, 1975

Appl. No.:

5/627789

Inventors:

Charles L. Segal - San Diego CA
Michael G. Anderson - San Diego CA
David N. Vincent - San Diego CA

Assignee:

Groves-Kelco Sales, Inc. - Bloomington MN

International Classification:

D2102

US Classification:

D34 5ST

US Patent:

D2450348, Jul 12, 1977

Filed:

Jun 27, 1975

Appl. No.:

5/590829

Inventors:

Charles L. Segal - San Diego CA
Michael G. Anderson - San Diego CA
David N. Vincent - San Diego CA

Assignee:

Groves-Kelco, Inc. - Minneapolis MN

International Classification:

D2102

US Classification:

D34 5ST

US Patent:

41871936, Feb 5, 1980

Filed:

May 5, 1978

Appl. No.:

5/903134

Inventors:

David N. Vincent - San Diego CA
Cheng-Hsiung Chang - Naperville IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

B01J 1302

US Classification:

252316

Abstract:

A chromogenic compound having the structural formula ##STR1## wherein R. sup. 1 and R. sup. 2 each represent an alkyl group; R. sup. 3 and R. sup. 4 each represent a hydrogen atom, a halogen atom, an alkyl group, a nitro group, an amino group, an acyl group, or a carboalkoxy group; R. sup. 5 represents a hydrogen atom or an alkyl group, with the proviso that R. sup. 5 represents an alkyl group only when R. sup. 4 represents a hydrogen atom; R. sup. 6 represents an alkyl group, an aryl group or an aralkyl group; and X and Y each represent a hydrogen atom, a halogen atom, a nitro group, a lower alkyl group, an aryl group, an alkoxy group or a carboalkoxy group. The aforesaid compound may be provided in a pressure-sensitive copy system wherein a visible image is formed upon reaction of the above chromogenic compound with an electron-accepting material of the Lewis acid type.