The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2002
Filed:
Mar. 07, 2000
Applicant:
Inventors:
Tommy J. Bedwell, Ann Arbor, MI (US);
Carmo Ribeiro, Ann Arbor, MI (US);
Assignee:
Federal-Mogul World Wide, Inc., Southfield, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02F 1/10 ;
U.S. Cl.
CPC ...
F02F 1/10 ;
Abstract
The piston sleeve has a radial positioning surface adjacent to the top surface and an axial positioning surface separated from radially positioning surface by a coolant contact surface. A piston bore extending the length of the piston sleeve is machined to form a non-cylindrical bore. The sleeve is compressed by applying force to the top surface and to the axial positioning surface. The piston sleeve is also heated to a normal working temperature. The compression force and the force due to thermal expansion deforms the piston sleeve and changes the non-cylindrical bore into a substantially cylindrical bore.