Michael R Field

US Patent:

6410487, Jun 25, 2002

Filed:

Jul 20, 2000

Appl. No.:

09/619934

Inventors:

Dean J. Miller - Darien IL
Michael B. Field - Jersey City NJ

Assignee:

The University of Chicago - Chicago IL

International Classification:

H01B 1202

US Classification:

505239, 505471, 505450

Abstract:

A bulk superconductor having a thickness of not less than about 100 microns is carried by a polycrystalline textured substrate having misorientation angles at the surface thereof not greater than about 15Â; the bulk superconductor may have a thickness of not less than about 100 microns and a surface area of not less than about 50 cm. The textured substrate may have a thickness not less than about 10 microns and misorientation angles at the surface thereof not greater than about 15Â. Also disclosed is a process of manufacturing the bulk superconductor and the polycrystalline biaxially textured substrate material.

US Patent:

53534379, Oct 11, 1994

Filed:

May 24, 1993

Appl. No.:

8/066712

Inventors:

Michael R. Field - Glenview IL
Gregory D. Caldwell - Glenview IL

Assignee:

Protec Field Gear, Inc. - Des Plaines IL

International Classification:

A41D 1300
A42B 100

US Classification:

2 2

Abstract:

A combination helmet and body protection device for use in sports such as American football and other hazardous activities such as driving, cycling, hockey, riot control, and fire fighting to protect the human body from potentially crippling forces applied to the head and upper body, comprising an upper torso section having internal padding attached thereto, an outer helmet which can be securely connected to the upper torso section so that the outer helmet cannot rotate with respect thereto and which can be easily removed from the upper torso section, and an inner helmet section which fits securely on the wearer's head and which allows rotation of the wearer's head inside the outer helmet section.

US Patent:

55112501, Apr 30, 1996

Filed:

Jan 26, 1995

Appl. No.:

8/378545

Inventors:

Michael R. Field - Glenview IL
Gregory D. Caldwell - Glenview IL

Assignee:

A-Star Sports Group, Inc. - Des Plaines IL

International Classification:

A42B 122

US Classification:

2418

Abstract:

An adjustable protective helmet having a substantially rigid outer bowl-shaped shell sized larger that the user's head, and having inner padding inside of the shell sized to fit on the user's head but with a looser fit than desired. The adjustment structure includes a flexible strap extended through circumferentially spaced slots in the shell to extend both inside of and outside of the shell, to its ends outside of the shell sized to overlap one another. A rivet secures the underlying strap end to the shell. The padding between the shell slots is free from connection with the shell, and the strap in this region overlies the padding between the padding and shell and is secured to the padding. Quick release fastening pads on the overlapping strap ends allow them to be releasibly secured together. The strap can thus be tightened via the overlying strap end from outside of the shell and connected to the underlying strap end to establish the helmet fit desired.