US3908483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary reverse transmission
Assignee: Individual
•
Filing: 1973-09-17
•
Granted: 1975-09-30
•
Expires: 1993-09-17
Abstract
Abstract A power transmission incorporating planetary gearing with its sun gear connected to the input, and its internal gear connected to the output. An expansible inertia clutch comprising resilient means far absorbing shocks when reversing is incorporated between input and output. A brake is connected to the planet gear carrier and reversing is obtained by the application of said brake.
Inventors
- 👤 Gerald Piquette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:54
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/021; F16H37/022; F16H57/00; F16H57/08; F16H57/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
In a power transmission comprising a planetary gear set having a sun gear, a rotary carrier having planet gears journalled thereon in mesh with said sun gear, an internal gear in mesh with said planet gears, input drive means connected to said sun gear, and output means connected to said internal gear, the improvement comprising: brake means including a braking member rotatable with said carrier and connected thereto for limited rotation relative to said carrier; releasable clutch means normally drivingly connecting said sun gear to said carrier for forward drive; and means responsive to said limited relative rotation between said braking member and said carrier in one direction, upon actuation of said brake means, to disable said clutch means and stop said carrier to establish reverse drive.
Claim 2
Dependent Claim
127 words
In a power transmission comprising a planetary gear set having a sun gear, a rotary carrier having planet gears journalled thereon in mesh with said sun gear, an internal gear in mesh with said planet gears, input drive means connected to said sun gear, and output means connected to said internal gear, the improvement comprising: brake means including a braking member rotatable with said carrier and connected thereto for limited rotation relative to said carrier; releasable clutch means normally drivingly connecting said sun gear to said carrier for forward drive; and means responsive to said limited relative rotation between said braking member and said carrier in one direction, upon actuation of said brake means, to disable said clutch means and stop said carrier to establish reverse drive.
Claim 3
Dependent Claim
24 words
A transmission as defined in claim 1 including friction means, other than said clutch, resisting relative rotation between said sun gear and said carrier.
Claim 4
Dependent Claim
23 words
A transmission as defined in claim 2 including a dashpot device arranged to resist relative rotation between said braking member and said carrier.
Claim 5
Dependent Claim
25 words
A transmission as defined in claim 1 wherein said input means is an expansible V-belt pulley having one plate thereof fixed to said sun gear.
Claim 6
Dependent Claim
45 words
A transmission as defined in claim 4 wherein said clutch means comprises a band clutch frictionally engaging a cylindrical surface of said sun gear, one end of the clutch band being fixed to said carrier and the other end being fixed to said braking member.
Claim 7
Dependent Claim
21 words
A transmission as defined in claim 5 including spring means urging said clutch band into frictional engagement with said cylindrical surface.
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |