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:
Nov. 06, 2001
Filed:
Jan. 21, 2000
Roger T. Simpson, Ithaca, NY (US);
Michael Duffield, Willseyville, NY (US);
Marty Gardner, Ithaca, NY (US);
BorgWarner Inc., Troy, MI (US);
Abstract
An internal combustion engine having a camshaft (,) and variable camshaft timing system, where a rotor (,) is secured to the camshaft (,) and is rotatable but non-oscillatable with respect to the camshaft (,). A housing (,) circumscribes the rotor (,), is rotatable with both the rotor (,) and the camshaft (,), and is further oscillatable with respect to both the rotor (,) and the camshaft (,) between a fully retarded position and a fully advanced position. A locking configuration prevents relative motion between the rotor and the housing (,), and is mounted within either the rotor (,) or the housing (,), and is respectively and releasably engageable with the other of either the rotor (,) and the housing (,) in the fully retarded position, the fully advanced position, and in positions therebetween. The locking device includes a locking piston (,) having keys (,) terminating one end (,) thereof, and serrations (,) mounted opposite the keys (,) on the locking piston (,) for interlocking the rotor (,) to the housing (,). A controlling configuration controls oscillation of the rotor (,) relative to the housing (,).