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:
May. 28, 2019
Filed:
Mar. 31, 2017
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Douglas R Verner, Sterling Heights, MI (US);
Scot A Douglas, Howell, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01); F01L 13/00 (2006.01);
U.S. Cl.
CPC ...
F01L 13/0036 (2013.01); F01L 2013/0052 (2013.01); F01L 2013/101 (2013.01); F01L 2101/00 (2013.01);
Abstract
A method for retracting an extended pin of a sliding camshaft actuator wherein the actuator includes a magnetic field generating coil, a magnetic piston in connection with the extended pin operable to be actuated by the magnetic field generating coil, and a pin stop plate. The method comprises creating an air gap between the magnetic piston and the pin stop plate and reversing voltage on the magnetic field generating coil to retract the extended pin.