Self-energizing brake for a tensioner

Patent No. 7,955,206

Inventors: Smart; Michael (Locke, NY)
Assignee: BorgWarner Inc. (Auburn Hills, MI)

Filed: January 24, 2007
PCT Filed: January 24, 2007
PCT Pub. No.: WO2007/092675
PCT Pub. Date: August 16, 2007
US application filed: August 06, 2008
Issued: June 7, 2011


A tensioner that includes a blade shoe (106), at least one blade spring (112), a ramp 122), and a brake (132). The blade shoe has a curved chain sliding face, an underside, opposite the chain sliding face, a proximal end pivotally attached to ground and a distal end. The ramp is fixed to ground and has a ramp surface (122a) for contacting the chain sliding face or the underside of the blade shoe. The brake is self-energizing, pivotally fixed to ground and has a friction contact surface (132a) for contacting the distal end portion (106c) of the chain sliding face, the blade spring, or the underside of the blade shoe for restricting movement of the distal end of the blade shoe in one direction and allowing movement in the opposite direction.

Reference to Related Applications

This application is a continuation in part of copending parent application PCT/US2007/060941, filed Jan. 24, 2007, entitled, "Blade Tensioner With Opposing Spans" and copending parent application PCT/US2007/060947, filed Jan. 24, 2007, entitled, "Torque Biased Friction Hinge For A Tensioner". The aforementioned application(s) are hereby incorporated herein by reference.

This application also claims one or more inventions which were disclosed in Provisional Application No. 60/822,520, filed Aug. 16, 2006, entitled "Self-Energizing Brake for a Tensioner", Provisional Application No. 60/863,815, filed Nov. 1, 2006, entitled "Blade Tensioner with Opposing Spans" and Provisional Application No. 60/765,777, filed Feb. 7, 2006, entitled "Torque Biased Friction Hinge For A Tensioner". The benefit under 35 USC .sctn.119(e) of the United States provisional application is hereby claimed, and the aforementioned applications are hereby incorporated herein by reference.


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