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:
Sep. 10, 2013
Filed:
Nov. 16, 2004
Kenneth W. Morgan, Lake Orion, MI (US);
Thomas J. Hemak, Troy, MI (US);
Aaron Wolfson, Ferndale, MI (US);
Thomas A. Horn, Eastpointe, MI (US);
Gregory S. Lewis, Clinton Township, MI (US);
Howard Saxon, Clinton Township, MI (US);
Kenneth W. Morgan, Lake Orion, MI (US);
Thomas J. Hemak, Troy, MI (US);
Aaron Wolfson, Ferndale, MI (US);
Thomas A. Horn, Eastpointe, MI (US);
Gregory S. Lewis, Clinton Township, MI (US);
Howard Saxon, Clinton Township, MI (US);
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A pulse width modulated solenoid system having low noise characteristics is described. Noise reduction is primarily achieved by separating the solenoid device from the insulator and the manifold housing through the use of rubber isolators and multiple sets of o-rings, thus preventing metal to metal contact. Additional noise reduction is achieved by encapsulating all of the solenoids, using the insulator, the cover plate, the housing, and the screen carrier. Noise levels are also further reduced by minimizing the impact force of the armature against the sleeve by allowing fluid to vent into the upper area of the sleeve, thus causing a dampening effect.