Patent US3851534A successfully refreshed from Google Patents.
US3851534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable ratio friction transmission
Assignee: Gebr STOBER DT
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Filing: 1973-05-29
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Granted: 1974-12-03
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Expires: 1993-05-29
Abstract
Abstract A variable ratio friction transmission in which an input shaft and an intermediate shaft and an output shaft are arranged substantially in end to end relation with cooperating elements of friction drive means on the adjacent ends of the shaft. Each set of cooperating friction drive elements consist of a friction cone and a friction ring. The intermediate shaft is adjustable transverse to the length thereof to change the drive ratio of the transmission and torque responsive means is included in the drive train responsive to torque being transmitted therethrough for urging the friction elements toward one another.
Inventors
- 👤 Paul Stoeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:31
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/06; F16H15/16; F16H15/18; F16H15/22
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
216 words
A variable friction drive transmission comprising: a frame, parallel input and output shafts rotatable in said frame in axially spaced relation, a first friction cone and a first friction ring each mounted on a respective one of the adjacent ends of said input and output shafts, a second friction ring engaging said first friction cone and a second friction cone engaging said first friction ring, an intermediate shaft, said second cone and second ring being fixed to opposite ends of said intermediate shaft and engaging the respective first ring and cone in radially spaced relation to the axis of said intermediate shaft on opposite sides thereof, a support supporting said intermediate shaft and moveable at an angle to the axes of said input and output shafts to vary the drive ratio of said transmission, means for maintaining said friction cones and friction rings in frictional engagement in adjusted positions of said intermediate shaft, said frame having a wall parallel to said input and output shafts and a first guide groove therein extending at right angles to said input and output shafts, and a carriage slidable in said first guide groove and having a second guide groove therein at right angles to the first guide groove, said support having a portion slidably engaging said second guide groove.
Claim 2
Dependent Claim
216 words
A variable friction drive transmission comprising: a frame, parallel input and output shafts rotatable in said frame in axially spaced relation, a first friction cone and a first friction ring each mounted on a respective one of the adjacent ends of said input and output shafts, a second friction ring engaging said first friction cone and a second friction cone engaging said first friction ring, an intermediate shaft, said second cone and second ring being fixed to opposite ends of said intermediate shaft and engaging the respective first ring and cone in radially spaced relation to the axis of said intermediate shaft on opposite sides thereof, a support supporting said intermediate shaft and moveable at an angle to the axes of said input and output shafts to vary the drive ratio of said transmission, means for maintaining said friction cones and friction rings in frictional engagement in adjusted positions of said intermediate shaft, said frame having a wall parallel to said input and output shafts and a first guide groove therein extending at right angles to said input and output shafts, and a carriage slidable in said first guide groove and having a second guide groove therein at right angles to the first guide groove, said support having a portion slidably engaging said second guide groove.
Claim 3
Dependent Claim
36 words
A transmission according to claim 1 which includes a support supporting said intermediate shaft, guide means in said frame engaging and guiding said support for movement in a direction parallel to said input and output shafts.
Claim 4
Dependent Claim
54 words
A transmission according to claim 2 in which said guide means comprise a member having a groove therein open at one end and said support comprises a portion engaging said groove, and means guiding said guide means on said frame for movement in a direction at right angles to said input and output shafts.
Claim 5
Dependent Claim
43 words
A transmission according to claim 1 in which said intermediate shaft is rotatable in said support and said second friction ring and said second friction cone being disposed adjacent opposite sides of said support and being nonaxially moveably connected to said intermediate shaft.
Claim 6
Dependent Claim
29 words
A transmission according to claim 1 which includes antifriction bearing means interposed between said portion of said support and said carriage, and rollers on said carriage engaging said frame.
Claim 7
Dependent Claim
31 words
A transmission according to claim 5 in which said first guide groove is in the form of opposed linear slots, said rollers extending into and engaging the bottoms of said slots.
Claim 8
Dependent Claim
45 words
A transmission according to claim 6 in which said rollers include at least one roller on each end of said carriage and on respectively opposite sides thereof, a plane common to the axes of both rollers extending angularly to the axis of said intermediate shaft.
Claim 9
Dependent Claim
31 words
A transmission according to claim 5 in which said antifriction bearing means comprise rolling bodies interposed between each side edge of said portion of said support and said second guide groove.
Claim 10
Dependent Claim
73 words
A transmission according to claim 1 in which one of said first friction cone and ring which is mounted on said output shaft is axially moveable thereon, and torque responsive means operatively interposed between said one of said first friction cone and ring and said output shaft operable to thrust said one of said first friction cone and ring axially toward said intermediate shaft in response to torque developed on said output shaft.
Claim 11
Dependent Claim
32 words
A transmission according to claim 1 in which said interMediate shaft is disposed at an angle of from about 6* to about 9* formed relative to the axis of said output shaft.
Claim 12
Dependent Claim
63 words
A transmission according to claim 9 in which said output shaft comprises first and second parts in telescopic engagement, said first part being nonaxially moveably supported in said frame, said second part being axially moveable on said first part and supporting said one of said first friction cone and ring, said torque responsive means being interposed between said parts of said output shaft.
Claim 13
Dependent Claim
43 words
A transmission according to claim 11 in which said torque responsive means comprises cooperating elements of cam and follower means on said parts of said output shaft responsive to relative rotation between said parts for urging said second part toward said intermediate shaft.
Claim 14
Dependent Claim
38 words
A transmission according to claim 12 in which said cam and follower means comprises a diametral pin in one of said shaft parts and a notch having inclined walls in the other shaft part and engaging said pin.
Claim 15
Dependent Claim
41 words
A transmission according to claim 1 in which both of said friction cones have the apex on the same axial side and each friction ring engages the respective friction cone on a corresponding side of the axis of said intermediate shaft.
Claim 16
Dependent Claim
29 words
A transmission according to claim 1 in which said first friction cone is mounted on said input shaft and said first friction ring is mounted on said output shaft.
Claim 17
Dependent Claim
180 words
In a variable friction disc transmission including a housing with an input shaft carrying a first runner in the form of a first friction cone and an output shaft carrying a second runner in the form of a first friction ring respectively connected in substantially identical axis arrangement, and connected with an intermediate shaft arranged on a support and comprising a second friction ring engaging said first friction cone and also comprising a second friction cone engaging a first friction ring while the support is journalled substantially linearly displaceable on the transmission housing approximately at a right angle to the direction of the transmission axis in the direction of the control movement, one runner being axially displaceable so that the second friction cone and the second friction ring are non-displaceable in axial direction and are mounted on the support, and guiding means moveable parallel to the axis of the first friction cone and the first friction ring, and said guiding means of the support being arranged at a radial distance with regard to the friction cones and the friction rings.
Claim 18
Dependent Claim
180 words
In a variable friction disc transmission including a housing with an input shaft carrying a first runner in the form of a first friction cone and an output shaft carrying a second runner in the form of a first friction ring respectively connected in substantially identical axis arrangement, and connected with an intermediate shaft arranged on a support and comprising a second friction ring engaging said first friction cone and also comprising a second friction cone engaging a first friction ring while the support is journalled substantially linearly displaceable on the transmission housing approximately at a right angle to the direction of the transmission axis in the direction of the control movement, one runner being axially displaceable so that the second friction cone and the second friction ring are non-displaceable in axial direction and are mounted on the support, and guiding means moveable parallel to the axis of the first friction cone and the first friction ring, and said guiding means of the support being arranged at a radial distance with regard to the friction cones and the friction rings.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |