US3890850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission with draw-key type shift
Assignee: Dana Inc
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Filing: 1973-05-21
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Granted: 1975-06-24
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Expires: 1993-05-21
Abstract
Abstract A transmission shift generally of the draw-key type is provided. A driven shaft has a longitudinally-extending channel or groove therein with a plurality of gears rotatably mounted thereon. A plurality of projections or keys are located in the channel, preferably one for each gear. A carrier in the channel spaces apart the keys at distances such that not more than one key can engage one gear at any time. The keys are resiliently mounted and are retracted in the channel except when aligned with an opening in a gear. With the multiple keys, the gears can be shifted from one end to the other with minimum motion of the shift means, requiring correspondingly less space for the transmission. The resilient mounting of the keys enables the gears to be easily shifted throughout their range, even when the transmission is stopped. The multiple key arrangement also distributes wear over a plurality of keys.
Inventors
- 👤 Hans Hauser
- 👤 Robert D Mcguire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:46
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/08; F16H63/16; F16H63/30; F16H2063/3093; F16H2063/3096; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19451; Y10T74/19465
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
163 words
A transmission comprising a rotatably-mounted shaft having longitudinally-extending guide means, a plurality of toothed members rotatably mounted on said shaft, each of said members having engageable means, selector means comprising a plurality of spaced projections cooperating with said guide means and extending outwardly from a common side thereof, there being one of said projections for each of at least some of said members, each of said projections being engageable with the engageable means of one of said members to cause that member to rotate with said shaft when so engaged, spacing means associated with said projections for spacing them apart distances such that not more than one of said projections is engaged with the engageable means of one of said members for any position of said projections and said spacing means along said guide means, resilient means for urging said projections outwardly from said shaft, and means for moving said projections and said spacing means along said guide means and along said shaft.
Claim 2
Dependent Claim
163 words
A transmission comprising a rotatably-mounted shaft having longitudinally-extending guide means, a plurality of toothed members rotatably mounted on said shaft, each of said members having engageable means, selector means comprising a plurality of spaced projections cooperating with said guide means and extending outwardly from a common side thereof, there being one of said projections for each of at least some of said members, each of said projections being engageable with the engageable means of one of said members to cause that member to rotate with said shaft when so engaged, spacing means associated with said projections for spacing them apart distances such that not more than one of said projections is engaged with the engageable means of one of said members for any position of said projections and said spacing means along said guide means, resilient means for urging said projections outwardly from said shaft, and means for moving said projections and said spacing means along said guide means and along said shaft.
Claim 3
Dependent Claim
36 words
A transmission according to claim 1 characterized by said guide means comprises a groove in said shaft, and said spacing means comprises a carrier having a plurality of openings in which said projections are transversely movable.
Claim 4
Dependent Claim
53 words
A transmission according to claim 1 characterized by at least some of said members having hubs adjacent said engageable means, and said projections having beveled edges, whereby longitudinal movement of said projections along said shaft and into engagement with said hubs will force said projections out of communication with the corresponding engageable means.
Claim 5
Dependent Claim
41 words
A transmission according to claim 1 characterized by said moving means comprises a collar on said shaft and having means for engaging said spacing means, and a pivotable fork engageable with said collar to move said collar longitudinally of said shaft.
Claim 6
Dependent Claim
29 words
A transmission according to claim 4 characterized by said collar having at least two oppositely-extending notches, there being two of said spacing means having ends engaged in said notches.
Claim 7
Dependent Claim
33 words
A transmission according to claim 1 characterized by said toothed members comprising a plurality of forward speed gears, said moving means being located along said shaft between two of the forward speed gears.
Claim 8
Dependent Claim
44 words
A transmission according to claim 6 characterized by said toothed members further comprising a reverse sprocket having engageable means, and said spacing means being engageable with said engageable means of said reverse sprocket for one position of said spacing means along said guide means.
Claim 9
Dependent Claim
141 words
A transmission comprising a rotatably-mounted shaft having a longitudinally-extending groove therein, a plurality of gears rotatably mounted on said shaft, at least some of said gears each having a recess which can communicate with said groove of said shaft, gear selector means comprising a carrier positioned within said groove of said shaft, said carrier having mounted thereon a plurality of spaced projections extending from a common side thereof and adapted to extend within the recesses of the gears to individually connect said gears and said shaft, resilient means movable with said carrier and extending outwardly into engagEment with said projections, carrier-moving means on said shaft and engageable with said carrier to move said projections relative to said gears longitudinally of said shaft, and means for moving said moving means along said shaft to move said carrier and said projections carried thereby.
Claim 10
Dependent Claim
141 words
A transmission comprising a rotatably-mounted shaft having a longitudinally-extending groove therein, a plurality of gears rotatably mounted on said shaft, at least some of said gears each having a recess which can communicate with said groove of said shaft, gear selector means comprising a carrier positioned within said groove of said shaft, said carrier having mounted thereon a plurality of spaced projections extending from a common side thereof and adapted to extend within the recesses of the gears to individually connect said gears and said shaft, resilient means movable with said carrier and extending outwardly into engagEment with said projections, carrier-moving means on said shaft and engageable with said carrier to move said projections relative to said gears longitudinally of said shaft, and means for moving said moving means along said shaft to move said carrier and said projections carried thereby.
Claim 11
Dependent Claim
37 words
A transmission according to claim 8 characterized by a toothed member rotatably mounted on said shaft and having engageable means thereon, and said carrier being engageable with said engageable means when in one position in said groove.
Claim 12
Dependent Claim
57 words
A transmission according to claim 8 characterized by each of said gears having a hub extending completely around the shaft and having a thickness less than the thickness of the gear, a plurality of dogs located adjacent said hub for each of said gears and extending toward the shaft, said gear having circumferentially-extending recesses between said dogs.
Claim 13
Dependent Claim
20 words
A transmission according to claim 8 characterized by a seating member movable with said carrier for supporting said resilient means.
Claim 14
Dependent Claim
42 words
A transmission according to claim 8 characterized by said carrier having a transverse opening therein for each of said projections and stop means associated with each of said projections for limiting the extent of movement of said projections outwardly from said carrier.
Claim 15
Dependent Claim
20 words
A transmission according to claim 12 characterized by said resilient means comprising a spring engageable with each of said projections.
Claim 16
Dependent Claim
16 words
A transmission according to claim 13 characterized by each of said springs being a coil spring.
Claim 17
Dependent Claim
139 words
A transmission comprising a rotatably-mounted shaft having a plurality of gears rotatably mounted thereon, at least some of said gears each having dogs adjacent said shaft, gear selector means comprising a carrier mounted for longitudinal movement on said shaft, a plurality of spaced projections mounted on said carrier for movement transverse to the longitudinal extent of said shaft, there being one of said projections for each of at least some of said gears, said carrier spacing said projections apart distances such that not more than one of said projections engages one of the gears for any position of said carrier on said shaft to enable not more than one gear to be engaged and rotatable with said shaft at any one time, and resilient means engageable with said projections for urging said projections from said carrier toward said gears.
Claim 18
Dependent Claim
139 words
A transmission comprising a rotatably-mounted shaft having a plurality of gears rotatably mounted thereon, at least some of said gears each having dogs adjacent said shaft, gear selector means comprising a carrier mounted for longitudinal movement on said shaft, a plurality of spaced projections mounted on said carrier for movement transverse to the longitudinal extent of said shaft, there being one of said projections for each of at least some of said gears, said carrier spacing said projections apart distances such that not more than one of said projections engages one of the gears for any position of said carrier on said shaft to enable not more than one gear to be engaged and rotatable with said shaft at any one time, and resilient means engageable with said projections for urging said projections from said carrier toward said gears.
Claim 19
Dependent Claim
45 words
A transmission according to claim 15 characterized by a reverse sprocket also being rotatably mounted on said rotatably-mounted shaft, said sprocket also having at least one dog, said carrier having an end effective to engage said sprocket dog when none of said gears is engaged.
Claim 20
Dependent Claim
43 words
A transmission according to claim 15 characterized by said gears having hubs adjacent said dogs, and said projections having beveled edges, whereby longitudinal movement of said projections into engagement with said hubs will force said projections out of communication with the corresponding dogs.
Claim 21
Dependent Claim
21 words
A transmission according to claim 15 characterized by said resilient means comprising a coil spring engageable with each of said projections.
Claim 22
Dependent Claim
23 words
Apparatus according to claim 15 characterized by said moving means comprising a ring collar extending around said shaft and engageable with said carriers.
Claim 23
Dependent Claim
27 words
Apparatus according to claim 15 characterized by retaining means on said shaft and effective to maintain said gears in at least two spaced clusters along said shaft.
Claim 24
Dependent Claim
21 words
Apparatus according to claim 20 characterized by said moving means being located, at least in part, in space between said clusters.
Claim 25
Dependent Claim
157 words
A transmission comprising a rotatably-mounted shaft having a longitudinally-extending groove therein, a plurality of gears rotatably mounted on said shaft, at least some of said gears each having a recess which can communicate with said groove of said shaft, gear selector means comprising a carrier positioned within said groove of said shaft, said carrier having mounted thereon a plUrality of spaced projections extending from a common side thereof and adapted to extend within the recesses of the gears, resilient means movable with said carrier and extending outwardly into engagement with said projections, carrier-moving means on said shaft and engageable with said carrier to move said projections relative to said gears longitudinally of said shaft, means for moving said moving means along said shaft to move said carrier and said projections carried thereby, a seating member movable with said carrier for supporting said resilient means, said carrier having an elongate recess in which said seating member is located.
Claim 26
Dependent Claim
157 words
A transmission comprising a rotatably-mounted shaft having a longitudinally-extending groove therein, a plurality of gears rotatably mounted on said shaft, at least some of said gears each having a recess which can communicate with said groove of said shaft, gear selector means comprising a carrier positioned within said groove of said shaft, said carrier having mounted thereon a plUrality of spaced projections extending from a common side thereof and adapted to extend within the recesses of the gears, resilient means movable with said carrier and extending outwardly into engagement with said projections, carrier-moving means on said shaft and engageable with said carrier to move said projections relative to said gears longitudinally of said shaft, means for moving said moving means along said shaft to move said carrier and said projections carried thereby, a seating member movable with said carrier for supporting said resilient means, said carrier having an elongate recess in which said seating member is located.
Claim 27
Dependent Claim
166 words
A transmission comprising a rotatably-mounted shaft having a longitudinally-extending groove therein, a plurality of gears rotatably mounted on said shaft, at least some of said gears each having a recess which can communicate with said groove of said shaft, gear selector means comprising a carrier positioned within said groove of said shaft, said carrier having a width slightly less than the width of said groove and having an outer arcuate surface with a radius of curvature substantially the same as the radius of said shaft, said carrier having mounted thereon a plurality of spaced projections extending from a common side thereof and adapted to extend within the recesses of the gears, resilient means movable with said carrier and extending outwardly into engagement with said projections, carrier-moving means on said shaft and engageable with said carrier to move said projections relative to said gears longitudinally of said shaft, and means for moving said moving means along said shaft to move said carrier and said projections carried thereby.
Claim 28
Dependent Claim
166 words
A transmission comprising a rotatably-mounted shaft having a longitudinally-extending groove therein, a plurality of gears rotatably mounted on said shaft, at least some of said gears each having a recess which can communicate with said groove of said shaft, gear selector means comprising a carrier positioned within said groove of said shaft, said carrier having a width slightly less than the width of said groove and having an outer arcuate surface with a radius of curvature substantially the same as the radius of said shaft, said carrier having mounted thereon a plurality of spaced projections extending from a common side thereof and adapted to extend within the recesses of the gears, resilient means movable with said carrier and extending outwardly into engagement with said projections, carrier-moving means on said shaft and engageable with said carrier to move said projections relative to said gears longitudinally of said shaft, and means for moving said moving means along said shaft to move said carrier and said projections carried thereby.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |