Edwin Brodie

US Patent:

42037930, May 20, 1980

Filed:

Jan 6, 1978

Appl. No.:

5/867611

Inventors:

Edwin T. Brodie - Muscatine IA
Donaldee Brewer - Muscatine IA

Assignee:

Bandag Incorporated - Muscatine IA

International Classification:

B29H 1736

US Classification:

156394

Abstract:

Tire casings are retreaded with precured tread strips in a heated pressure vessel provided with pressure connections which effect simultaneous inflation of the tires and pressurization of the vessel while maintaining tire pressure above vessel pressure. Subsequently a pressure relief system permits the tires to exhaust faster than the vessel. Each tire is prepared for retreading by applying a bonding medium between the tire periphery and the retread strip and wrapping the resulting assembly with a fluid impervious flexible cover. Tread stabilization rings, wick material and non-stick polymer film may be inserted between the tread strip and the cover.

US Patent:

43534023, Oct 12, 1982

Filed:

Aug 23, 1979

Appl. No.:

6/069187

Inventors:

Ioan A. Burche - Muscatine IA
Edwin T. Brodie - Muscatine IA

Assignee:

Bandag Incorporated - Muscatine IA

International Classification:

B60C 1106
B60C 1112

US Classification:

152209R

Abstract:

Tire treads are designed to be receptive to the technique of cutting parallel slits therein for the purpose of improving traction and wear life. In order to obtain the advantages of slitting while avoiding cracking and breaking off of tread elements during use, the slit angle, general guides for the tire size and type and slit depth should be chosen within prescribed limits, and additional voids such as shoulder grooves, cross grooves and cross molded voids should be parallel to the slits. Tie bars integral at their ends with tread elements extend across the tread grooves to provide lateral support for the tread elements.

US Patent:

40750477, Feb 21, 1978

Filed:

Oct 14, 1975

Appl. No.:

5/622419

Inventors:

Edwin T. Brodie - Muscatine IA
Donaldee Brewer - Muscatine IA

Assignee:

Bandag Incorporated - Muscatine IA

International Classification:

B29H 1736
B29H 1737

US Classification:

156 96

Abstract:

Tire casings are retreaded with precured tread strips in a heated pressure vessel provided with pressure connections which effect simultaneous inflation of the tires and pressurization of the vessel while maintaining tire pressure above vessel pressure. Subsequently a pressure relief system permits the tires to exhaust faster than the vessel. Each tire is prepared for retreading by applying a bonding medium between the tire periphery and the retread strip and wrapping the resulting assembly with a fluid impervious flexible cover. Tread stabilization rings, wick material and non-stick polymer film may be inserted between the tread strip and the cover.

US Patent:

39335518, Jan 20, 1976

Filed:

Nov 30, 1973

Appl. No.:

5/420577

Inventors:

Edwin T. Brodie - Muscatine IA
Ronald Seiler - Muscatine IA

Assignee:

Bandag Incorporated - Muscatine IA

International Classification:

B29H 504
B29H 1736

US Classification:

156 96

Abstract:

In bonding a prevulcanized tread strip to a tire casing with a low-temperature-vulcanizable bonding medium temporary support elements in the form of elastic rings are inserted in the circumferential tread grooves during pressing of the tread strip against the tire casing for the purposes of achieving uniform pressure over the whole tread strip and preventing distortion or movement of portions of the tread strip and/or bonding medium during the bonding operation.

US Patent:

39517209, Apr 20, 1976

Filed:

Feb 4, 1974

Appl. No.:

5/439639

Inventors:

Edwin T. Brodie - Muscatine IA

Assignee:

Bandag Incorporated - Muscatine IA

International Classification:

B29H 504
B29H 516
B29H 1736

US Classification:

156 96

Abstract:

A strip of rubber base bonding material for use in cold bonding a prevulcanized tread strip to a tire contains both a low-temperature vulcanizing agent and accelerators. The bonding material is compounded by a special technique which stabilizes the vulcanizing agent and the accelerator thereby avoiding prevulcanization during storage. In use the bonding material is interposed between the tread strip and the tire, and the assembly is heated to less than about 300. degree. F under pressure to effect vulcanizing of the bonding material.

US Patent:

42016100, May 6, 1980

Filed:

Jan 6, 1978

Appl. No.:

5/867612

Inventors:

Edwin T. Brodie - Muscatine IA
Donaldee Brewer - Muscatine IA

Assignee:

Bandag Incorporated - Muscatine IA

International Classification:

B29H 1736

US Classification:

156 96

Abstract:

Tire casings are retreaded with precured tread strips in a heated pressure vessel provided with pressure connections which effect simultaneous inflation of the tires and pressurization of the vessel while maintaining tire pressure above vessel pressure. Subsequently a pressure relief system permits the tires to exhaust faster than the vessel. Each tire is prepared for retreading by applying a bonding medium between the tire periphery and the retread strip and wrapping the resulting assembly with a fluid impervious flexible cover. Tread stabilization rings, wick material and non-stick polymer film may be inserted between the tread strip and the cover.

US Patent:

40469476, Sep 6, 1977

Filed:

Sep 8, 1975

Appl. No.:

5/611253

Inventors:

Edwin T. Brodie - Muscatine IA

Assignee:

Bandag Incorporation - Muscatine IA

International Classification:

B29H 900

US Classification:

428352

Abstract:

A strip of rubber base bonding material for use in cold bonding a prevulcanized tread strip to a tire contains both a low-temperature vulcanizing agent and accelerators. The bonding material is compounded by a special technique which stabilizes the vulcanizing agent and the accelerator thereby avoiding prevulcanization during storage. In use the bonding material is interposed between the tread strip and the tire, and the assembly is heated to less than about 300. degree. F under pressure to effect vulcanizing of the bonding material.