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:
Feb. 28, 2012
Filed:
Oct. 29, 2008
Carl E. Fonville, Ann Arbor, MI (US);
Michael R. Thelen, Sterling Heights, MI (US);
Carl E. Fonville, Ann Arbor, MI (US);
Michael R. Thelen, Sterling Heights, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
The present invention provides novel acoustic bumpers that can dampen vibrations and control noise transmission from an engine front cover, or other component. In one embodiment, the front cover carries a water pump and internal water distribution passages and covers an overhead camshaft drive mechanism and an oil pump mounted on the engine block. Noise control of unsupported cover central portions is provided by acoustic bumpers carried on inside cover bosses and engaging surfaces in accessible locations on the engine block front face or on associated components. The acoustic bumpers may be doughnut shaped annular rings having identical coaxial locating recesses on opposite sides for error-free installation. A central web between the recesses includes an axially located retainer hole. Each bumper may be mounted on a pillar on the inside cover face that includes a fastener receiving blind hole centrally located on a raised circular boss.