Charles L Rader

US Patent:

41695240, Oct 2, 1979

Filed:

Jun 29, 1978

Appl. No.:

5/920264

Inventors:

Natabara Khuntia - Hudson OH
Charles W. Rader - Willowick OH

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 5540

US Classification:

188170

Abstract:

A disc brake service piston for heavy equipment and off-the-road vehicles has an annular configuration and is sealingly and reciprocably received in an annular cavity forming a pressure chamber. During brake disassembly requiring removal of the piston from the cavity, the piston must be disconnected from a series of piston retracting mechanisms. The arrangement permits the force of one piston retraction spring to be relieved at a time. A tool is used which has a thread at one end and a handle at the other end. The threaded end is inserted into a tapped hole at the end of a return spring guide pin which transmits the spring force of one retracting mechanism to the piston. The tool can then be moved to compress the guide pin spring so that the pin is moved a sufficient distance to expose a cross pin therein which provides the connection between the guide pin and the piston. The cross pins are removed, one by one, from all of the spring guide pins of all of the mechanisms. The only manual force required at any one time in such removal is that required to overcome the compression force of one piston return spring.

US Patent:

41725115, Oct 30, 1979

Filed:

Jun 28, 1978

Appl. No.:

5/919775

Inventors:

Natabara Khuntia - Hudson OH
Charles W. Rader - Willowick OH

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 5902

US Classification:

188170

Abstract:

An annular type disc brake assembly having parking brake apply springs which are pre-loaded is arranged for disassembly in such a manner that the load on the parking brake springs must be evenly released in small increments until there is no pre-load on the springs. This is accomplished by providing several of the securing bolts assembling the housing section containing the spring to another housing section of a different, longer length than the remaining securing bolts of this type. The longer bolts are arranged so that they can be moved translationally into position in the one housing section before assembly and have at least a portion of the bolt heads then covered by slotted safety lugs formed as a part of the one housing section. When the disc brake is to be disassembled, the shorter bolts are first removed, leaving only the longer bolts to hold the housing sections together and resist the force of the parking brake apply springs. A suitable bolt removal tool is then inserted in the head of one of the longer bolts and the bolt is threaded outwardly of the housing for only a short distance until it is prevented from further movement by its associated safety lug.

US Patent:

41868226, Feb 5, 1980

Filed:

Jun 28, 1978

Appl. No.:

5/919766

Inventors:

Natabara Khuntia - Hudson OH
Charles W. Rader - Willowick OH

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 6602

US Classification:

188 1A

Abstract:

The disc brake disclosed is of the type used for heavy equipment, including off-the-road vehicles. It is oil cooled, with the disc pack being enclosed in a housing. In brakes of this type which are currently on the market, the wear of the disc pack can be checked only by disassembly of the brake assembly. The disclosure shows an arrangement wherein pack wear can be checked without requiring such disassembly. The bosses in which piston retracting mechanisms are provided are convenient for such purposes. One or more of these bosses is provided with a tapped access hole after having the boss end surface machined to a smooth finish. When the brake disc pack is new, the service brake piston and the parking brake release piston cavities are pressurized, causing the parking brake piston to back off completely. The service brake piston squeezes the disc pack against the parking brake piston and pulls the service brake piston return spring guide pins with it. The distance between the headed end of the guide pin and the outside boss machined surface is measured precisely.

US Patent:

44106564, Oct 18, 1983

Filed:

May 3, 1982

Appl. No.:

6/374451

Inventors:

Aubert Y. Coran - Akron OH
Charles P. Rader - Akron OH
Chester D. Trivette - Akron OH

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C08J 320
C08L 700
C08L 900
C08L 906

US Classification:

524529

Abstract:

The method of masticating diene rubber in the presence of maleic acid or maleic anhydride together with sulfur or an organic sulfur compound capable of generating a thiyl radical is shown. Improved tack, green strength or both are realized in the treated diene rubber.

US Patent:

45131104, Apr 23, 1985

Filed:

Jun 9, 1983

Appl. No.:

6/502875

Inventors:

Charles P. Rader - Akron OH

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C08L 700
C08L 900
C08L 906
C08L 1300

US Classification:

524432

Abstract:

Treatment of diene rubber with a diketo compound, in which the keto groups are part of a six-carbon hydrocarbon ring containing carbon-to-carbon unsaturation, or a tautomer of the compound, is performed at temperatures above 130. degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis.

US Patent:

44992432, Feb 12, 1985

Filed:

Nov 7, 1983

Appl. No.:

6/549032

Inventors:

Charles P. Rader - Akron OH

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C08C 1920
C08C 1922

US Classification:

5253331

Abstract:

Treatment of diene rubber with a compound of the formula ##STR1## wherein X and Y are --OH or --NH. sub. 2 and R and R' are hydrogen, --OH, NH. sub. 2 or non-reactive substituents is performed at temperatures above 130. degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis.