Blade tensioner having spring blade cantilevered from distal end of arm
First Claim
Patent Images
1. An apparatus for applying a continuous tension to chain, the apparatus comprising:
- a tensioner arm having a distal end;
a face secured to the tensioner arm having a first portion extending beyond the distal end of the tensioner arm and movable away from the distal end of the tensioner arm;
at least two blade springs secured relative to the tensioner arm and having end portions extending beyond the distal end of the tensioner arm, the blade springs urging the first portion of the face in the first direction into contact with a chain, one of the blade springs having a stop and another of the blade springs having a contact surface disposed to engage the blade stop when the face moves toward the tensioner arm to limit relative movement between the blade springs.
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Accused Products
Abstract
A chain tensioner (10) is disclosed which includes a tensioner arm (18), a face (30) and a blade spring (36). The face and blade spring each have portions which extend beyond a distal end (22) of the tensioner arm. The blade spring maintains contact between the face and a chain (16) as the chain wears.
60 Citations
23 Claims
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1. An apparatus for applying a continuous tension to chain, the apparatus comprising:
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a tensioner arm having a distal end;
a face secured to the tensioner arm having a first portion extending beyond the distal end of the tensioner arm and movable away from the distal end of the tensioner arm;
at least two blade springs secured relative to the tensioner arm and having end portions extending beyond the distal end of the tensioner arm, the blade springs urging the first portion of the face in the first direction into contact with a chain, one of the blade springs having a stop and another of the blade springs having a contact surface disposed to engage the blade stop when the face moves toward the tensioner arm to limit relative movement between the blade springs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for applying a continuous tension to chain, the apparatus comprising:
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a tensioner arm having a distal end and a proximate end;
a face secured relative to the proximate end of the tensioner arm and having a portion extending beyond the distal end of the tensioner arm;
a blade spring formed of a first blade spring portion and second blade spring portion, said blade spring being secured relative to the proximate end of the tensioner arm, said first and second blade spring portions extending beyond the distal end of the tensioner arm, the blade springs urging the portion of the face from the distal end of the tensioner arm and into contact with a chain, and a stop disposed between the first and second blade spring portions restricting relative movement therebetween when the face moves toward the tensioner arm. - View Dependent Claims (14, 15, 16, 17)
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18. An apparatus for applying tension to at least one strand of a chain, the apparatus comprising:
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a tensioner arm having a first end and a second end, the tensioner arm pivotable about the first end;
a face having a first portion and a second portion, the first portion secured relative to the first end of the tensioner arm and the second portion unsecured relative to the second end of the tensioner arm; and
a spring member secured relative to the tensioner arm at a spring securement location disposed between the first and second ends thereof and unsecured relative to the second end of the tensioner arm, the spring member cantileverly extending from the tensioner arm effective to bias the second portion of the face away from the second end of the tensioner arm against the chain strand, the face being secured relative to the tensioner arm between the spring securement location and the second end of the tensioner arm. - View Dependent Claims (19, 20, 21)
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22. An apparatus for applying a continuous tension to chain, the apparatus comprising:
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a tensioner arm having a distal end;
a face secured to the tensioner arm and having a portion extending beyond the distal end of the tensioner arm; and
a blade spring riveted to the tensioner arm and having a portion extending beyond the distal end of the tensioner arm, the blade spring urging the face into contact with a chain.
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23. An apparatus for applying tension to at least one strand of a chain, the apparatus comprising:
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a tensioner arm having a first end and a second end, the tensioner arm pivotable about the first end;
a face having a first portion and a second portion, the first portion secured relative to the first end of the tensioner arm and the second portion unsecured relative to the second end of the tensioner arm; and
at least two spring means for biasing the second portion of the face in a first direction away from the second end of the tensioner arm against the chain strand, means for limiting relative movement between the spring means when the second portion of the face moves in a direction opposite the first direction.
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Specification