US3744274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for connecting power transmission member of drive shaft
Assignee: Toyota Motor Corp
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Filing: 1971-07-27
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Granted: 1973-07-10
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Expires: 1991-07-27
Abstract
Abstract The present invention relates to a frictional connection arrangement between a drive shaft and a prime mover connected to rotate the drive shaft. The frictional connection arrangement is characterized by a surface having a low coefficient of friction and prevents noise due to drive slippage which occurs when the torque on the drive shaft exceeds a predetermined amount.
Inventors
- 👤 S Sekiya
- 👤 S Kato
- 👤 Y Jikihara
- 👤 M Ando
- 👤 Y Nunotaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:08
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16C; F16C2361/00; F16C2361/61; F16H; F16H48/00; F16H48/38; F16H48/42; F16H2048/423
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
In a transmission comprising a first rotatable body, a second rotatable body in axial alignment with the first body and interlockingly connected to the first body for rotatable movement therewith, a housing surrounding the second rotatable body, bearings inside the housing for freely rotatably supporting the second rotatable body within the housing, and means for frictionally connecting the first rotatable body to the bearings whereby initial rotation of the first body causes the bearings to rotate through frictional engagement to thereby rotate the second body, the improvement comprising a surface having a low coefficient of friction in the frictional connection means between the first rotatable body and the bearings.
Claim 2
Dependent Claim
109 words
In a transmission comprising a first rotatable body, a second rotatable body in axial alignment with the first body and interlockingly connected to the first body for rotatable movement therewith, a housing surrounding the second rotatable body, bearings inside the housing for freely rotatably supporting the second rotatable body within the housing, and means for frictionally connecting the first rotatable body to the bearings whereby initial rotation of the first body causes the bearings to rotate through frictional engagement to thereby rotate the second body, the improvement comprising a surface having a low coefficient of friction in the frictional connection means between the first rotatable body and the bearings.
Claim 3
Dependent Claim
28 words
The combination of claim 1 in which the frictional connection means includes a washer between the first rotatable body and the bearings, the washer comprising porous sintered metal.
Claim 4
Dependent Claim
31 words
The combination of claim 1 in which the frictional connection means includes a washer between the first rotatable body and the bearings, the washer including a coating of hardened synthetic resin.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |