Power transmission ring and variable diameter pulley assembly using the same
AssigneeKoyo Seiko Co., Ltd.
InventorMasashi Uota
Life of this patent
Estimating the term…
Abstract
In a power transmission ring, a plastic ring is provided with first and second tapered raceway surfaces on one and the other of lateral surfaces thereof, the first and second tapered raceway surfaces conforming to first and second power transmission surfaces of first and second sheaves, respectively. A metallic ring is provided with first and second tapered surfaces on one and the other of lateral surfaces thereof in parallel relation with the first and second raceway surfaces, respectively, and unified with the plastic ring.
Claims20
A power transmission ring comprising:
- an outer periphery which, when said power transmission ring is in operation, has a belt of a power transmission system looped thereover;
- a plastic ring dimensioned to be held between first and second power transmission surfaces of the power transmission system, each of the first and second transmission surfaces being formed on a corresponding lateral surface of first and second sheaves of the power transmission system opposed to each other and allowed to be decentered relative to an axis of the first and second sheaves, said plastic ring having first and second tapered raceway surfaces on lateral surfaces thereof which are designed to be in parallel relation with the first and second power transmission surfaces, respectively, and to allow said first and second raceway surfaces to be contacted by the first and second power transmission surfaces, respectively, when said power transmission ring is in operation;
- and
- a metallic ring having first and second tapered surfaces formed on opposite lateral surfaces thereof in parallel relation with the first and second raceway surfaces, respectively, and unified with the plastic ring.
A variable diameter pulley assembly comprising:
- first and second sheaves axially relatively movable as presenting first and second power transmission surfaces to each other, the power transmission surfaces each formed on a corresponding lateral surface of the first and second sheaves;
- a resilient member for biasing at least one of the sheaves toward the other;
- and
- a power transmission ring including:
- an outer periphery which, when said power transmission ring is in operation, has a belt of a power transmission system looped thereover;
- a plastic ring held between the first and second power transmission surfaces which are allowed to be decentered relative to an axis of the first and second sheaves, said plastic ring having first and second tapered raceway surfaces formed on lateral surfaces thereof in parallel relation with the first and second power transmission surfaces, respectively, and so as to allow the first and second raceway surfaces to be contacted by the first and second power transmission surfaces, respectively;
- and
- a metallic ring having first and second tapered surfaces formed on lateral surfaces thereof in parallel relation with the first and second raceway surfaces, respectively, and unified with the plastic ring.
A power transmission ring comprising:
- a plastic ring having first and second raceway surfaces adapted for contact with first and second power transmission surfaces of sheaves of a power transmission, respectively, and said power transmission ring further comprising;
- first and second tapered surfaces formed so as to be in parallel relation with both the respective first and second raceway surfaces and the respective first and second power transmission surfaces.
Dependencies are inferred from the claim text.