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:
Jun. 06, 2006
Filed:
Feb. 18, 2003
Applicants:
Keith E. Lawrence, Peoria, IL (US);
Bryan E. Strawbridge, Dunlap, IL (US);
Charles H. Dutart, Washington, IL (US);
Inventors:
Keith E. Lawrence, Peoria, IL (US);
Bryan E. Strawbridge, Dunlap, IL (US);
Charles H. Dutart, Washington, IL (US);
Assignee:
Caterpillar Inc, Peoria, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02B 75/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method for varying a compression ratio of an engine having a block and a head mounted thereto. The apparatus and method includes a cylinder having a block portion and a head portion, a piston linearly movable in the block portion of the cylinder, a cylinder plug linearly movable in the head portion of the cylinder, and a valve located in the cylinder plug and operable to provide controlled fluid communication with the block portion of the cylinder.