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US 6,440,020 B1Granted
Blade-type chain tensioner
AssigneeBorg-Warner Automotive, Inc.
InventorNaosumi Tada
Life of this patent
Estimating the term…
Abstract
A blade-type chain tensioner includes a blade shoe having a chain sliding face, a blade spring biasing the blade shoe toward an associated chain, and a bracket to rotatably support the fixed end of the blade shoe. The length of the blade spring is shorter than that of the chain sliding face of the blade shoe. The first end of the blade spring is attached onto the fixed end of the blade shoe and slidably contacts the distal end of the bracket at a contact point located between the fixed and free ends of the shoe.
Claims8
A blade chain tensioner comprising:
- a bracket;
- a blade shoe having a chain sliding face and an inside face opposite said sliding face, a fixed end and a free end opposite said fixed end, said blade shoe rotatably disposed on said bracket at said fixed end of said blade shoe;
- a resilient blade spring disposed against said inside face of said shoe and biasing said blade shoe toward an associated chain, said blade spring contacting said inside face of said blade shoe at said fixed end of said blade shoe;
- a distal end of said bracket contacting said blade spring at a contact point located at an intermediate position between said free end and said fixed end of said blade shoe;
- and,
- said second end of said blade spring has a curved face, said curved face contacting slidably with said distal end of said bracket.
3 more elements
A blade chain tensioner comprising:
- a bracket;
- a blade shoe having a chain sliding face, a fixed end and a free end opposite said fixed end, said blade shoe rotatably disposed on said bracket on said fixed end of said blade shoe;
- a blade spring provided at a face opposite the chain sliding face of said blade shoe, said blade spring urging said blade shoe toward an associated chain, and
- a protrusion being formed on a distal end of said bracket extending to an intermediate position between said free end of said blade shoe and said fixed end thereof, said protrusion being slidable onto said blade spring.
1 more element
Dependencies are inferred from the claim text.