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US 2001/0019975 A1Published application
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.
Claims16
A power transmission ring comprising:
- an outer periphery with a belt looped thereover;
- a plastic ring held between first and second power transmission surfaces, each formed on a corresponding lateral surface of first and second sheaves opposed each other, as allowed to be decentered relative to an axis of the first and second sheaves, having first and second tapered raceway surfaces formed on one and the other of lateral surfaces thereof in parallel relation with the first and second power transmission surfaces, respectively, and allowing 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 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.
1 more element
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 with a belt looped thereover;
- a plastic ring held between the first and second power transmission surfaces as allowed to be decentered relative to an axis of the first and second sheaves, having first and second tapered raceway surfaces formed on one and the other of lateral surfaces thereof in parallel relation with the first and second power transmission surfaces, respectively, and allowing 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 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.
5 more elements
Dependencies are inferred from the claim text.