Kevin M Ijames

US Patent:

6537396, Mar 25, 2003

Filed:

Feb 20, 2001

Appl. No.:

09/681201

Inventors:

Kevin Ijames - Cuba MO

Assignee:

Ace Manufacturing Parts Company - Sullivan MO

International Classification:

C21D 604

US Classification:

148578, 62 62

Abstract:

A clutch disc spring for a land vehicle, such as an over-the-road truck or an automobile, which has an increased life. The spring, formed of ferrous material, is cooled by vaporizing low temperature nitrogen to slowly, cryogenically cool the spring to a temperature of about -300 degrees Fahrenheit and maintain the spring at that temperature for several hours. The cryogenic treatment converts retained austenite within the spring to martensite, thereby improving the mechanical properties of the spring. The spring is then tempered to temper the newly formed martensite, further improving the mechanical properties of the spring. These improved mechanical properties include better wear resistance, strength and resistance to fatigue.

US Patent:

48151890, Mar 28, 1989

Filed:

Jun 8, 1987

Appl. No.:

7/059631

Inventors:

Carl E. Ijames - Sullivan MO
Kevin M. Ijames - Sullivan MO

Assignee:

Ace Manufacturing and Parts Co. - Sullivan MO

International Classification:

F16D 1358
B23P 600

US Classification:

294011

Abstract:

A method of converting from a first clutch of the type comprising a relatively wide-profile cover having an integral circular rim attached to one face of a flat rimless flywheel, to a second clutch of the type comprising a relatively thin-profile cover. The method comprises detaching the first clutch with the wide-profile cover from the flywheel, applying the second clutch including the thin-profile cover and an adaptor ring to one face of the flywheel with the adaptor ring disposed between the cover and the flywheel, and removably attaching the cover and adaptor ring to the flywheel.