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US 8,137,222 B2Granted
Accessory drive tensioner system
AssigneeGM Global Technology Operations LLC
InventorDaniel D. Cottrell, V.
Life of this patent
Estimating the term…
Abstract
An accessory drive tensioner system may include a bracket, a coupling mechanism, and a biasing member. The bracket may have an aperture therethrough and a tensioner hub coupled thereto. The coupling mechanism may extend through the aperture to rotatably couple the bracket to a mounting member that is fixed relative to an engine. The biasing member may be engaged with the coupling mechanism and the bracket to bias the bracket axially along the coupling mechanism.
Claims18
An accessory drive tensioner system comprising:
- a bracket having an aperture;
- a first tensioner hub coupled to said bracket;
- a rotary tensioner having a first end rotatably coupled to said bracket;
- a second tensioner hub coupled to a second end of said rotary tensioner;
- a coupling mechanism extending through said aperture to rotatably couple said bracket to an engine and including a fastener and a bearing, said fastener including a shank extending through said aperture, defining a rotational axis for said bracket, said fastener being located radially outside of said first tensioner hub and securing said bracket to said engine, and said bearing located radially between said fastener and said aperture;
- a first washer disposed on said shank and engaging a structure that is axially fixed relative to said engine;
- a second washer disposed on said shank and engaging an axial end surface of said bracket;
- and
- a biasing member disposed between said first and second washers and engaged with said coupling mechanism via said first washer, said biasing member engaged with said bracket via said second washer and biasing said bracket axially along said coupling mechanism.
6 more elements
A pivot coupling comprising:
- a bushing extending through an aperture in an accessory drive tensioner bracket of an engine;
- a bearing located on an outer radial surface of said bushing and within said aperture to rotatably support said accessory drive tensioner bracket on said bushing;
- a fastener including a shank extending through said bushing and being axially fixed relative to said engine, said fastener located radially outward from a tensioner hub that is coupled to said bracket, said fastener located radially outward from a first end of a rotary tensioner coupled to said bracket, and said fastener defining a rotational axis for said bracket;
- a first washer located on said shank;
- a second washer located on said shank;
- and
- a biasing member disposed between said first and second washers on said shank that axially biases said bracket along said shank.
4 more elements
Dependencies are inferred from the claim text.