US3268041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscous drive
Assignee: Eaton Corp
•
Filing: 1964-07-23
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Granted: 1966-08-23
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Expires: 1984-07-23
Abstract
No abstract record available.
Inventors
- 👤 Daniel W Roper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:13
CPC Classifications
F; F16; F16D; F16D35/00; F16D35/02; F16D35/021; F16D35/023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
A FLUID COUPLING COMPRISING AN INPUT COUPLING MEMBER AND AN OUTLET COUPLING MEMBER DISPOSED ADJACENT THE INPUT COUPLING MEMBER, SAID INPUT AND OUTPUT COUPLING MEMBERS HAVING SPACED OPPOSED SURFACE PORTIONS DEFINING A FLUID SHEAR SPACE THEREBETWEEN COOPERABLE WITH A FLUID SHEAR MEDIUM WITHIN THE SHEAR SPACE TO PROVIDE A SHEAR TYPE FLUID DRIVE BETWEEN SAID MEMBERS, MEANS FOR EVACUATING FLUID FROM SAID SHEAR SPACE INCLUDING PUMPING MEANS SUPPORTED BY SAID OUTPUT COUPLING MEMBER AND HAVING A SURFACE PORTION ADJACENT A SURFACE OF SAID INPUT COUPLING MEMBER AND DEFINING THEREBETWEEN A CHAMBER OF DECREASING CROSS-SECTIONAL DIMENSION AS THE CHAMBER EXTENDS IN THE DIRECTION OF ROTATION OF THE COUPLING MEMBERS.
References Cited (Backward Citations)
US3174600A
Cited
US3191733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |