US4055091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable output transmission
Assignee: Ker Train Systems NV
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Filing: 1975-11-24
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Granted: 1977-10-25
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Expires: 1995-11-24
Abstract
Abstract The present invention relates to variable output transmissions which utilize mechanical square wave generators. The square wave generator comprises a plurality of relatively rotatable driver gears mounted on a first common shaft, and a plurality of driven gears mounted to the bevel gears of a differential, the differential carrier and pinion thereof being fixedly mounted on a second common shaft. The driven and driver gear meshingly engage, the rotation of the driver gears imparting a relative pattern of rotation to the driven gears to cause the differential carrier and the second shaft to rotate with an angular velocity determined by the relative angle of mounting the driver gears. The output angular velocity of the generators is applied to the output shaft of the transmission such that by varying the relative angle of mounting the driver gears the output of the transmission may be varied.
Inventors
- 👤 John Hugh Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:59
CPC Classifications
F; F16; F16H; F16H35/00; F16H35/02; Y; Y10; Y10S; Y10S475/00; Y10S475/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
343 words
An inverted-gear-train-loop with the first gear-element of said loop consisting of identical driver-gears of two sets of variable-ratio-gears with said sets incorporating the embodiments as specified for square-wave-generator elements: ______________________________________
Driven Gear
##STR1##
Driver Gear
##STR2##
A/B Ratio between 1 and 4
Asymmetry Ratio between .5 and .95
Bias Ratio between -.2 and +.2
Cyclical Ratio between 1/10 and 10
Cycle Ratio between 1/10 and 10/1
______________________________________ with one of said driver-gears affixed to a first shaft together with a common-spur-gear control-element, with the second driver-gear affixed to a tubular shaft together with a second identical common-spur-gear control-element, with said tubular shaft concentrically mounted between the one driver-gear and control-element of said first shaft; concentrically mounted and free to rotate on said first shaft adjacent to said control-element is a control cage incorporating a plurality of double-spool gear-elements with one spool having one less tooth than the other, with said spool with one less tooth congruent to said one control-element affixed to said first shaft, and with said spools with one more tooth congruent to said control-element affixed to said tubular shaft, so that, when said control cage is rotated with said tubular shaft held relatively fixed, said first control-element together with said first shaft and said one driver-gear will be caused to rotate relative to said second driver gear affixed to said tubular shaft; with the second gear-element of said inverted-gear-train-loop consisting of identical driven-gears of said two sets of variable-ratio-gears, to which are affixed the bevel gears of a differential-gear-train, said differential-gear-train also having a carrier and at least one pinion, with the carrier and pinions of said differential-gear-train affixed to a third shaft with an end thereof extended to form the inner race of an overrunning clutch, with the outer race of said overrunning clutch together with the third spur-gear-element of said inverted-gear-train-loop affixed to a fourth shaft co-axially mounted with said third shaft; and congruent to said third spur-gear-element is the last spur-gear-element of said inverted-gear-train-loop, to which is affixed a fifth shaft co-axially mounted with said first shaft.
Claim 2
Dependent Claim
343 words
An inverted-gear-train-loop with the first gear-element of said loop consisting of identical driver-gears of two sets of variable-ratio-gears with said sets incorporating the embodiments as specified for square-wave-generator elements: ______________________________________
Driven Gear
##STR1##
Driver Gear
##STR2##
A/B Ratio between 1 and 4
Asymmetry Ratio between .5 and .95
Bias Ratio between -.2 and +.2
Cyclical Ratio between 1/10 and 10
Cycle Ratio between 1/10 and 10/1
______________________________________ with one of said driver-gears affixed to a first shaft together with a common-spur-gear control-element, with the second driver-gear affixed to a tubular shaft together with a second identical common-spur-gear control-element, with said tubular shaft concentrically mounted between the one driver-gear and control-element of said first shaft; concentrically mounted and free to rotate on said first shaft adjacent to said control-element is a control cage incorporating a plurality of double-spool gear-elements with one spool having one less tooth than the other, with said spool with one less tooth congruent to said one control-element affixed to said first shaft, and with said spools with one more tooth congruent to said control-element affixed to said tubular shaft, so that, when said control cage is rotated with said tubular shaft held relatively fixed, said first control-element together with said first shaft and said one driver-gear will be caused to rotate relative to said second driver gear affixed to said tubular shaft; with the second gear-element of said inverted-gear-train-loop consisting of identical driven-gears of said two sets of variable-ratio-gears, to which are affixed the bevel gears of a differential-gear-train, said differential-gear-train also having a carrier and at least one pinion, with the carrier and pinions of said differential-gear-train affixed to a third shaft with an end thereof extended to form the inner race of an overrunning clutch, with the outer race of said overrunning clutch together with the third spur-gear-element of said inverted-gear-train-loop affixed to a fourth shaft co-axially mounted with said third shaft; and congruent to said third spur-gear-element is the last spur-gear-element of said inverted-gear-train-loop, to which is affixed a fifth shaft co-axially mounted with said first shaft.
Claim 3
Dependent Claim
71 words
An inverted-gear-train-loop as defined in claim 1, wherein said overrunning clutch is repositioned, with said inner race affixed to said bevel gear of said differential-gear-train with said driven variable-ratio-gear congruent to said driver-gear affixed to said first shaft, and with said outer race affixed to said drive gear; with said second shaft extended and affixed directly to said third spur-gear-element of said inverted-gear-train-loop with the third shaft of said loop eliminated.
Claim 4
Dependent Claim
235 words
An inverted gear-train-loop as defined in claim 1, wherein said overrunning clutch is repositioned, with said inner race affixed to said bevel gear of said differential-gear-train with said driven-variable-ratio-gear congruent to said driver-gear affixed to said first shaft, and with said outer race affixed to said driven-gear; with said second shaft extended and affixed directly to the third spur-gear-element of said inverted-gear-train-loop with said third shaft of said loop eliminated, and with a third identical set of variable-ratio-gears incorporated in said loop so that the driver-gear of said third set is affixed together with a third identical common-spur-gear control-element to a second tubular shaft concentrically mounted and free to rotate between said first tubular shaft and said first shaft between said one driver-gear and said first control-element, with said plurality of double-spool gear-elements incorporated in said control cage having a third spool with one more tooth than said second spool and congruent to said third control-element, so that, when said control cage is rotated with said first tubular shaft held fixed, said second tubular shaft will be caused to rotate in the opposite sense, with the same order, as the first shaft; with the driven-gear of said third set of identical variable-ratio-gears affixed to the outer race of a second overrunning clutch, with the inner race affixed to said bevel gear of said differential-gear-train extended to form the inner race of said second overrunning clutch.
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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) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |