Patent US3230795A successfully refreshed from Google Patents.
US3230795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential transmission
Assignee: Individual
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Filing: 1963-05-31
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Granted: 1966-01-25
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Expires: 1983-05-31
Abstract
Abstract 1,002,020. Differential gearing. O. MUELLER. May 6, 1964 [May 31, 1963], No. 18895/64. Heading F2D. In a motor vehicle planetary differential gear slip is resisted by throttling liquid pumped by pistons 54, 55 reciprocated in radial bores in the planet carrier 20 by a cam 48 on one side wheel 38, alternate bores, oppositely phased, communicating with annular ducts 64, 65 which are connected through an exchangeable orifice in an axial bore (Fig. 4, not shown). Make-up liquid is supplied to the duct 65 through an exchangeable orifice in an axial bore (Fig. 4, not shown). Make-up liquid is supplied to the duct 65 through a one-way valve (Fig. 4, not shown) and duct 95, by a pump 80, surplus from which exhausts through a duct 96 and relief valve.
Inventors
- 👤 Mueller Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:21
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/27; F16H48/06; F16H48/08; F16H48/38; F16H48/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A DIFFERENTIAL TRANSMISSION COMPRISING A CASING FOR TRANSMITTING AN INPUT TORQUE, A SET OF DIFFERENTIAL GEARS MOUNTED IN SAID CASING FOR RECEIVING THE INPUT TORQUE, SAID SET OF DIFFERENTIAL GEARS INCLUDING A PAIR OF SIDE GEARS ADAPTED TO BE CONNECTED TO A PAIR OF AXLE SHAFTS, ONE OF SAID SIDE GEARS HAVING RADIALLY DIRECTED RISE AND FALL CAM SURFACES AROUND ITS CIRCUMFERENCE, SAID CASING HAVING A PLURALITY OF RADIALLY INWARDLY OPENING PRESSURE CHAMBERS FACING SAID CAM SURFACES AND ADAPTED TO CONTAIN A FLUID, PISTONS IN SAID PRESSURE CHAMBERS OPERATIVELY ENGAGING SAID CAM SURFACES FOR RECIPROCATING IN RESPONSE TO ROTATION OF SAID ONE SIDE GEAR RELATIVE TO SAID CASING, SAID PRESSURE CHAMBERS AND SAID CAM SURFACES BEING ARRANGED SO THAT CERTAIN OF SAID PISTONS RECIPROCATE ONE HUNDRED EIGHTY DEGREES OUT OF PHASE WITH OTHER OF SAID PISTONS DURING SAID RELATIVE ROTATION OF SAID ONE SIDE GEAR WITH RESPECT TO SAID CASING, AND PASSAGE MEANS PROVIDING RESTRICTED FLUID COMMUNICATION BETWEEN THE PRESSURE CHAMBERS CONTAINING SAID CERTAIN PISTONS AND THE PRESSURE CHAMBERS CONTAINING SAID OTHER PISTONS.
Claim 2
Dependent Claim
173 words
A DIFFERENTIAL TRANSMISSION COMPRISING A CASING FOR TRANSMITTING AN INPUT TORQUE, A SET OF DIFFERENTIAL GEARS MOUNTED IN SAID CASING FOR RECEIVING THE INPUT TORQUE, SAID SET OF DIFFERENTIAL GEARS INCLUDING A PAIR OF SIDE GEARS ADAPTED TO BE CONNECTED TO A PAIR OF AXLE SHAFTS, ONE OF SAID SIDE GEARS HAVING RADIALLY DIRECTED RISE AND FALL CAM SURFACES AROUND ITS CIRCUMFERENCE, SAID CASING HAVING A PLURALITY OF RADIALLY INWARDLY OPENING PRESSURE CHAMBERS FACING SAID CAM SURFACES AND ADAPTED TO CONTAIN A FLUID, PISTONS IN SAID PRESSURE CHAMBERS OPERATIVELY ENGAGING SAID CAM SURFACES FOR RECIPROCATING IN RESPONSE TO ROTATION OF SAID ONE SIDE GEAR RELATIVE TO SAID CASING, SAID PRESSURE CHAMBERS AND SAID CAM SURFACES BEING ARRANGED SO THAT CERTAIN OF SAID PISTONS RECIPROCATE ONE HUNDRED EIGHTY DEGREES OUT OF PHASE WITH OTHER OF SAID PISTONS DURING SAID RELATIVE ROTATION OF SAID ONE SIDE GEAR WITH RESPECT TO SAID CASING, AND PASSAGE MEANS PROVIDING RESTRICTED FLUID COMMUNICATION BETWEEN THE PRESSURE CHAMBERS CONTAINING SAID CERTAIN PISTONS AND THE PRESSURE CHAMBERS CONTAINING SAID OTHER PISTONS.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |