Patent US4934206A successfully refreshed from Google Patents.
US4934206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously variable traction roller transmission
Assignee: Nissan Motor Co Ltd
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Filing: 1989-02-02
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Granted: 1990-06-19
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Expires: 2009-02-02
Abstract
Abstract A continuously variable traction roller transmission comprises a first and a second pair of roller carriers, each of said roller carriers a first pulley portion and a second pulley portion which are spaced along an axis which said roller carrier is rotatable about, a first belt drivingly interconnecting the first pulleys of the first pair of roller carriers, a second belt drivingly interconnecting the second pulleys of ones of the first and second pairs of roller carriers, a third belt drivingly interconnecting the second pulleys of the other of the first and second pairs of roller carriers, a fourth belt drivingly interconnecting said first pulleys of said second pair of roller carriers, and a bearing mechanism for rotatably supporting each of the first and second pairs of roller carriers at a portion between the first and second pulley portions thereof.
Inventors
- 👤 Masaki Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:38
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/06; F16H15/32; F16H15/36; F16H15/38; F16H2015/383
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
223 words
A continuously variable traction roller transmission, comprising: a casing; a first pair of roller carriers rotatably supported by said casing and rotably supporting a pair of first traction rollers which are in contact with a first input toric element and a first output toric element; a second pair of roller carriers rotatably supported by said casing and rotably supporting a pair of second traction rollers which are in contact with a second input toric element and a second output toric element; each of said roller carriers having comprises a first pulley portion and a second pulley portion which are spaced along an axis about which said roller carrier rotates; a plurality of power transmission belts including a first belt drivingly interconnecting ones of said first pulley portions of said first pair of roller carriers, a second belt drivingly interconnecting said second pulley portions of one of said first and second pairs of roller carriers, a third belt drivingly interconnecting said second pulleys of the other of said first and second pairs of roller carriers, and a fourth belt drivingly interconnecting said first pulleys of said second pair of roller carriers; and a bearing mechanism fixedly supported by said casing for rotatably supporting each of said first and second pairs of roller carriers at a portion between said first and second pulley portions thereof.
Claim 2
Dependent Claim
223 words
A continuously variable traction roller transmission, comprising: a casing; a first pair of roller carriers rotatably supported by said casing and rotably supporting a pair of first traction rollers which are in contact with a first input toric element and a first output toric element; a second pair of roller carriers rotatably supported by said casing and rotably supporting a pair of second traction rollers which are in contact with a second input toric element and a second output toric element; each of said roller carriers having comprises a first pulley portion and a second pulley portion which are spaced along an axis about which said roller carrier rotates; a plurality of power transmission belts including a first belt drivingly interconnecting ones of said first pulley portions of said first pair of roller carriers, a second belt drivingly interconnecting said second pulley portions of one of said first and second pairs of roller carriers, a third belt drivingly interconnecting said second pulleys of the other of said first and second pairs of roller carriers, and a fourth belt drivingly interconnecting said first pulleys of said second pair of roller carriers; and a bearing mechanism fixedly supported by said casing for rotatably supporting each of said first and second pairs of roller carriers at a portion between said first and second pulley portions thereof.
Claim 3
Dependent Claim
18 words
A continuously variable traction roller transmission as claimed in claim 1, wherein each of said belts is crossed.
Claim 4
Dependent Claim
19 words
A continuously variable traction roller transmission as claimed in claim 1, wherein each of said belts is a wire.
Claim 5
Dependent Claim
19 words
A continuously variable traction roller transmission as claimed in claim 1, wherein said bearing mechanism includes needle bearing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |