US4016779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm drive automatic transmission
Assignee: Individual
•
Filing: 1975-04-04
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Granted: 1977-04-12
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Expires: 1995-04-04
Abstract
Abstract This disclosure is directed to an improved transmission providing a substantially infinite motor to rear-wheel gear ratio capable of automatically adjusting itself under a wide variety of conditions. The transmission of this invention is comprised of three distinct operational units, the torque converter or fluid drive, the worm drive unit and the gear box unit. The transmission while in drive, is capable of providing a 100 to 1 motor to rear wheel ratio (substantially) and ratio can vary through any ratio necessary under particular driving conditions up to a 1-to-1 ratio.
Inventors
- 👤 John W. VON Greyerz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:04
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
A mechanically-driven worm drive transmission capable of responding to changed load conditions while providing low motor to drive wheel ratios, said transmission having an internal worm drive output shaft connected at one end to a mechanically gear-driven worm drive unit through a first turbine-driven planetary gear system having a carrier connected to and driven by the turbine of a torque converter and at the other end a second planetary gear system having a carrier driven by the primary pump of said torque converter and annulus gear providing a base, adjacent to said torque converter, for driving at least two associated pinion gears which in turn rotate a sun gear and separate worm driven ring gear, whereby the speed of rotation of said latter two gears exceeds that of both said driven second planet carrier and its associated engine-driven primary pump, whereby the speed of rotation of said sun gear and its connected worm drive ring gear is directly proportional to that of said first turbine-driven planet carrier and output shaft.
Claim 2
Dependent Claim
170 words
A mechanically-driven worm drive transmission capable of responding to changed load conditions while providing low motor to drive wheel ratios, said transmission having an internal worm drive output shaft connected at one end to a mechanically gear-driven worm drive unit through a first turbine-driven planetary gear system having a carrier connected to and driven by the turbine of a torque converter and at the other end a second planetary gear system having a carrier driven by the primary pump of said torque converter and annulus gear providing a base, adjacent to said torque converter, for driving at least two associated pinion gears which in turn rotate a sun gear and separate worm driven ring gear, whereby the speed of rotation of said latter two gears exceeds that of both said driven second planet carrier and its associated engine-driven primary pump, whereby the speed of rotation of said sun gear and its connected worm drive ring gear is directly proportional to that of said first turbine-driven planet carrier and output shaft.
Claim 3
Dependent Claim
37 words
A transmission as in claim 1 wherein said torque converter means drives said second planetary gears and worm drive ring gear through a separate annulus gear and output shaft return housing operatively connected to said output shaft.
Claim 4
Dependent Claim
66 words
A transmission as in claim 1, wherein said second planetary gear system drives said worm drive ring gear which in turn drives a plurality of first planetary pinion worm gears capable of axial rotation thereby permitting controlled rotation of said associated planetary worm carrier around said sun worm gear in the same direction of travel as that of an associated motor, turbine and said primary pump.
Claim 5
Dependent Claim
39 words
The transmission as in claim 3 wherein said worm gears operate as a governor or sliding clutch between said first planetary worm carrier and said sun worm gear thereby permitting rotation of the former without necessarily rotating the latter.
Claim 6
Dependent Claim
35 words
The transmission as in claim 4 wherein rotation of said engine during acceleration effects positive rotation of said planetary pinion worm gears permitting controlled rotation of said planetary worm carrier about said sun worm gear.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |