Patent US3731549A successfully refreshed from Google Patents.
US3731549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infinitely variable transmission
Assignee: Jagenberg Werke AG
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Filing: 1971-06-07
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Granted: 1973-05-08
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Expires: 1991-06-07
Abstract
Abstract In an infinitely variable speed transmission comprising a pair of transmission shafts one of which drives and the other of which is driven, two pairs of conical disks respectively carried on said pair of shafts, a transmission chain operatively connecting said pair of disks, and means for adjusting the spacing between the disks of each pair and thereby infinitely vary the transmission ratio, there is provided a piston-cylinder which applies a counter-force either against the transmission chain or the means for adjusting the spacing between a pair of disks. The counter-force is controlled by the load on the driven transmission shaft and is especially intended to ensure constant transmission ratio as is needed in cutting machines wherein the length of material between cuts must be identical.
Inventors
- 👤 W Kaiser
- 👤 W Meurer
- 👤 G Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:15
CPC Classifications
D; D06; D06H; D06H7/00; D06H7/02; F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/66272; F16H9/00; F16H9/02; F16H9/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
163 words
In an infinitely variable speed transmission comprising a pair of transmission shafts one of which drives and the other of which is driven, two pairs of conical disks respectively carried on said pair of shafts, a transmission chain operatively connecting said pairs of disks, and means for adjusting the spacing between the disks of each pair and thereby infinitely varying the transmission ratio, the improvement which comprises a counter-force applicator operatively associated with said adjusting means or said transmission chain, and means for actuating said applicator, said actuating means being controlled by the load on the driven transmission shaft, said means for adjusting the spacing between the disks of each pair comprising at least one lever pivotable in a plane parallel to that defined by the transmission shafts and operatively connected to one disk, and means for pivoting said lever so as to displace said one disk and adjust its spacing relative to its companion disk, said counter-force applicator acting against said lever.
Claim 2
Dependent Claim
163 words
In an infinitely variable speed transmission comprising a pair of transmission shafts one of which drives and the other of which is driven, two pairs of conical disks respectively carried on said pair of shafts, a transmission chain operatively connecting said pairs of disks, and means for adjusting the spacing between the disks of each pair and thereby infinitely varying the transmission ratio, the improvement which comprises a counter-force applicator operatively associated with said adjusting means or said transmission chain, and means for actuating said applicator, said actuating means being controlled by the load on the driven transmission shaft, said means for adjusting the spacing between the disks of each pair comprising at least one lever pivotable in a plane parallel to that defined by the transmission shafts and operatively connected to one disk, and means for pivoting said lever so as to displace said one disk and adjust its spacing relative to its companion disk, said counter-force applicator acting against said lever.
Claim 3
Dependent Claim
15 words
A transmission according to claim 1, wherein said counter-force applicator comprises a piston and cylinder.
Claim 4
Dependent Claim
18 words
A transmission according to claim 1, wherein said counter-force applicator acts against the face of said transmission chain.
Claim 5
Dependent Claim
23 words
A transmission according to claim 3, wherein said counter-force applicator acts against said chain at a location upstream of the driving transmission shaft.
Claim 6
Dependent Claim
23 words
A transmission according to claim 3, wherein said counter-force applicator acts against said chain at a location upstream of the driven transmission shaft.
Claim 7
Dependent Claim
41 words
A transmission according to claim 1, said actuating means including means for sensing the torque on said driven transmission shaft, and means for applying a positive counter-force, no counter-force or a negative counter-force through said applicator in dependence upon the torque.
Claim 8
Dependent Claim
79 words
A transmission according to claim 6, wherein said means for adjusting the spacing between the disks of each pair comprises at least one lever pivotable in a plane parallel to that defined by the transmission shafts and operatively connected to one disk, and means for pivoting said lever so as to displace said one disk and adjust its spacing relative to its companion disk, said counter-force applicator acting against said lever and comprising at least one piston and cylinder.
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |