Patent US4990126A successfully refreshed from Google Patents.
US4990126A
Expired / Lapsed
US
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Continuously variable transmission
Assignee: Nissan Motor Co Ltd
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Filing: 1988-10-20
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Granted: 1991-02-05
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Expires: 2008-10-20
Abstract
Abstract A chamber having therein a V-belt type continuously variable transmission is separated from another chamber having therein a differential mechanism. These chambers, however, are in fluid communication with an oil pan via generally vertical holes.
Inventors
- 👤 Yasufumi Ideta
- 👤 Hiromi Taguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:28
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/021; F16H37/022; F16H57/00; F16H57/02; F16H57/035; F16H57/037; F16H2057/0081; F16H2057/02039; F16H2057/02043; F16H2057/02047; F16H57/04; F16H57/0434; F16H57/0445; F16H57/045; F16H57/0453; F16H57/048; F16H57/0487; F16H57/0489; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
191 words
In a continuously variable transmission: a casing having a first chamber, a second chamber, and a partition wall arranged to separate said second chamber from said first chamber; a V-belt power transmission mechanism including a V-belt drivingly interconnecting driver and follower pulleys, said V-belt type continuously variable transmission mechanism being arranged within said first chamber; a differential mechanism arranged within said second chamber; an oil pan secured to said casing; said casing having first hole means for providing fluid communication between said first chamber and said oil pan, and second hole means for providing fluid communication between said second chamber and said oil pan, said oil pan containing a quantity of oil, said V-belt power transmission mechanism and said differential mechanism both using said oil contained in said oil pan, said casing having a predetermined mounting site, a control valved assembly secured to said casing at said predetermined mounting site and disposed between said first and second hole means, said control valve assembly having first wall means extending from said first hole means toward said oil pan and second wall means extending from said second hole means toward said oil pan.
Claim 2
Dependent Claim
191 words
In a continuously variable transmission: a casing having a first chamber, a second chamber, and a partition wall arranged to separate said second chamber from said first chamber; a V-belt power transmission mechanism including a V-belt drivingly interconnecting driver and follower pulleys, said V-belt type continuously variable transmission mechanism being arranged within said first chamber; a differential mechanism arranged within said second chamber; an oil pan secured to said casing; said casing having first hole means for providing fluid communication between said first chamber and said oil pan, and second hole means for providing fluid communication between said second chamber and said oil pan, said oil pan containing a quantity of oil, said V-belt power transmission mechanism and said differential mechanism both using said oil contained in said oil pan, said casing having a predetermined mounting site, a control valved assembly secured to said casing at said predetermined mounting site and disposed between said first and second hole means, said control valve assembly having first wall means extending from said first hole means toward said oil pan and second wall means extending from said second hole means toward said oil pan.
Claim 3
Dependent Claim
21 words
A continuously variable transmission as claimed in claim 1, wherein said first and second wall means extend into said oil pan.
Claim 4
Dependent Claim
38 words
A continuously variable transmission as claimed in claim 2, wherein said control valve assembly has a periphery and peripheral wall means extending to define said periphery thereof, said peripheral wall means including said first and second wall means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |