US3608661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized wheel traction drive units
Assignee: Individual
•
Filing: 1968-07-08
•
Granted: 1971-09-28
•
Expires: 1988-07-08
Abstract
Abstract A compact motorized wheel has a motor cantilevered on a support and carrying a hub and tire. A gyratory epicyclic gear couples the motor shaft to the hub.
Inventors
- 👤 Alfred R E Arnot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:28
CPC Classifications
B; B60; B60K; B60K7/00; B60K7/0007; B60K17/00; B60K17/04; B60K17/043; B60K17/046; B60K7/0015; B60K2007/0046; B60K2007/0092
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
210 words
A compact, motorized, ground wheel unit, comprising: a motor, a support for said motor, means mounting said motor as a cantilever upon said support, a hub, means mounting said hub for rotation about and substantially coaxial with said motor, a tire on said hub, an output shaft in said motor, a respective bearing at each end of said motor to support said shaft, gearing coupling said output shaft to said hub, said gearing comprising: an extension of said shaft, said extension projecting from said motor and being supported by said bearings, a gyratory gearwheel surrounding and eccentrically mounted upon said extension, a second gearwheel engaging said gyratory gearwheel, and reaction means coaxial with said motor shaft enabling drive to the hub upon gyration of said gyratory gearwheel, said bearings, said motor shaft, and said extension being of such a size as substantially to carry unbalanced load developed by said gearing during operation, wherein the said reaction means include axially extending pins projecting into apertures in the gyratory gearwheel, the teeth of the gyratory gearwheel are on a flange wider than the web of the gyratory gearwheel, and the part of the hub which carries the pins extends axially towards the said web into the space defined by the said flange.
Claim 2
Dependent Claim
210 words
A compact, motorized, ground wheel unit, comprising: a motor, a support for said motor, means mounting said motor as a cantilever upon said support, a hub, means mounting said hub for rotation about and substantially coaxial with said motor, a tire on said hub, an output shaft in said motor, a respective bearing at each end of said motor to support said shaft, gearing coupling said output shaft to said hub, said gearing comprising: an extension of said shaft, said extension projecting from said motor and being supported by said bearings, a gyratory gearwheel surrounding and eccentrically mounted upon said extension, a second gearwheel engaging said gyratory gearwheel, and reaction means coaxial with said motor shaft enabling drive to the hub upon gyration of said gyratory gearwheel, said bearings, said motor shaft, and said extension being of such a size as substantially to carry unbalanced load developed by said gearing during operation, wherein the said reaction means include axially extending pins projecting into apertures in the gyratory gearwheel, the teeth of the gyratory gearwheel are on a flange wider than the web of the gyratory gearwheel, and the part of the hub which carries the pins extends axially towards the said web into the space defined by the said flange.
Claim 3
Dependent Claim
207 words
A compact, motorized, ground wheel unit, comprising: a motor, a support for said motor, means mounting said motor as a cantilever upon said support, a hub, means mounting said hub for rotating about and substantially coaxial with said motor, a tire on said hub, an output shaft in said motor, a respective bearing at each end of said motor to support said shaft, gearing coupling said output shaft to said hub, said gearing comprising: an extension of said shaft, said extension projecting from said motor and being supported by said bearings, a gyratory gearwheel surrounding and eccentrically mounted upon said extension, a second gearwheel engaging said gyratory gearwheel, and reaction means coaxial with said motor shaft enabling drive to the hub upon gyration of said gyratory gearwheel, said bearing, said motor shaft, and said extension being of such a size as substantially to carry unbalanced load developed by said gearing during operation, wherein a counterbalancing weight is carried on and is secured to the extension of the motor shaft, the teeth of the gyratory gearwheel are on a flange wider than the web of the gyratory gearwheel, and said counterbalancing weight is so disposed as to lie at least partly within the space defined by the flange.
Claim 4
Dependent Claim
207 words
A compact, motorized, ground wheel unit, comprising: a motor, a support for said motor, means mounting said motor as a cantilever upon said support, a hub, means mounting said hub for rotating about and substantially coaxial with said motor, a tire on said hub, an output shaft in said motor, a respective bearing at each end of said motor to support said shaft, gearing coupling said output shaft to said hub, said gearing comprising: an extension of said shaft, said extension projecting from said motor and being supported by said bearings, a gyratory gearwheel surrounding and eccentrically mounted upon said extension, a second gearwheel engaging said gyratory gearwheel, and reaction means coaxial with said motor shaft enabling drive to the hub upon gyration of said gyratory gearwheel, said bearing, said motor shaft, and said extension being of such a size as substantially to carry unbalanced load developed by said gearing during operation, wherein a counterbalancing weight is carried on and is secured to the extension of the motor shaft, the teeth of the gyratory gearwheel are on a flange wider than the web of the gyratory gearwheel, and said counterbalancing weight is so disposed as to lie at least partly within the space defined by the flange.
Claim 5
Dependent Claim
154 words
A compact, motorized, ground wheel unit comprising, in combination: a motor, an output shaft in said motor, a housing for said motor arranged substantially coaxial with said motor, a hub, a bearing mounting said hub for rotation substantially coaxially upon said housing with said hub extending around said motor housing, a ground wheel on said hub, an epicyclic gear system between said output shaft and said hub, said gear system comprising: an eccentric driven by said shaft, an outwardly toothed gearwheel carried by said eccentric and mounted upon axially directed pins, an inwardly toothed annulus in mesh with said outwardly toothed gearwheel and carried on one end of said housing in fixed relation thereto and concentric with said motor shaft, said pins being carried by a part of said hub that extends inwardly around the end of said annulus to be driven around the axis of said motor shaft by said outwardly toothed gearwheel.
Claim 6
Dependent Claim
154 words
A compact, motorized, ground wheel unit comprising, in combination: a motor, an output shaft in said motor, a housing for said motor arranged substantially coaxial with said motor, a hub, a bearing mounting said hub for rotation substantially coaxially upon said housing with said hub extending around said motor housing, a ground wheel on said hub, an epicyclic gear system between said output shaft and said hub, said gear system comprising: an eccentric driven by said shaft, an outwardly toothed gearwheel carried by said eccentric and mounted upon axially directed pins, an inwardly toothed annulus in mesh with said outwardly toothed gearwheel and carried on one end of said housing in fixed relation thereto and concentric with said motor shaft, said pins being carried by a part of said hub that extends inwardly around the end of said annulus to be driven around the axis of said motor shaft by said outwardly toothed gearwheel.
Claim 7
Dependent Claim
114 words
A compact, motorized, ground wheel unit comprising: a hub, a ground wheel upon said hub, a tire on said ground wheel, a motor, an output shaft in said motor, a support for said motor, means mounting said motor upon said support, means mounting said hub for rotation about said motor and substantially coaxial with said shaft, a gyratory epicyclic gear between one end of said shaft and said hub, and brake means comprising: a dished rotary element attached to said shaft, and an actuating mechanism mounted above said shaft and lying substantially within a volume defined by an imaginary cylinder of which the periphery passes through the outermost extremities of said motor and gear.
Claim 8
Dependent Claim
114 words
A compact, motorized, ground wheel unit comprising: a hub, a ground wheel upon said hub, a tire on said ground wheel, a motor, an output shaft in said motor, a support for said motor, means mounting said motor upon said support, means mounting said hub for rotation about said motor and substantially coaxial with said shaft, a gyratory epicyclic gear between one end of said shaft and said hub, and brake means comprising: a dished rotary element attached to said shaft, and an actuating mechanism mounted above said shaft and lying substantially within a volume defined by an imaginary cylinder of which the periphery passes through the outermost extremities of said motor and gear.
Claim 9
Dependent Claim
35 words
A unit according to claim 4, wherein said support is mounted for rotation about an axis for steering the unit and said actuating mechanism comprises control means passing through said support substantially at said axis.
Claim 10
Dependent Claim
134 words
A compact, motorized, grounded wheel unit comprising: a motor, a support for said motor, a hub, means mounting said hub for rotation about said motor, a tire on said hub, and gearing coupling said motor to said hub, in combination with a steerable mounting upon which the unit is mounted, and wherein supply cables are provided for the unit which are flexible and a section of each cable includes a loop constrained to roll between a fixed circular guide and a further circular guide coaxial with the fixed guide and arranged to rotate with the steering movement of the unit, and a power source, said cables being connected to said power source and to said motor for supplying power from said source to said motor, said motor being movable relative to said power source.
Claim 11
Dependent Claim
134 words
A compact, motorized, grounded wheel unit comprising: a motor, a support for said motor, a hub, means mounting said hub for rotation about said motor, a tire on said hub, and gearing coupling said motor to said hub, in combination with a steerable mounting upon which the unit is mounted, and wherein supply cables are provided for the unit which are flexible and a section of each cable includes a loop constrained to roll between a fixed circular guide and a further circular guide coaxial with the fixed guide and arranged to rotate with the steering movement of the unit, and a power source, said cables being connected to said power source and to said motor for supplying power from said source to said motor, said motor being movable relative to said power source.
Claim 12
Dependent Claim
30 words
A unit according to claim 6, wherein two of the supply cables are so arranged that one of said loops lengthens and the other shortens upon steering of the unit.
Claim 13
Dependent Claim
20 words
A unit according to claim 7, wherein means are provided which constrain the loops to roll in predetermined spaced relationship.
Claim 14
Dependent Claim
32 words
A unit according to claim 8, wherein the constraining means include a ring around which the two loops pass, to ring being able to move around the space between the two guides.
Claim 15
Dependent Claim
97 words
A compact, motorized, grOund wheel unit comprising: a motor, a support for said motor, a hub, means mounting said hub for rotation about said motor, a tire on said hub, gearing coupling said motor to said hub, rotatable mounting means adapted to provide a steering connection for the unit, and resilient connection means connecting said support to said rotatable mounting means whereby said steering connection is adapted to be isolated from shock-induced movement of said support, wherein the resilient connection means include a plurality of compression springs located close to the periphery of said rotatable mounting means.
Claim 16
Dependent Claim
97 words
A compact, motorized, grOund wheel unit comprising: a motor, a support for said motor, a hub, means mounting said hub for rotation about said motor, a tire on said hub, gearing coupling said motor to said hub, rotatable mounting means adapted to provide a steering connection for the unit, and resilient connection means connecting said support to said rotatable mounting means whereby said steering connection is adapted to be isolated from shock-induced movement of said support, wherein the resilient connection means include a plurality of compression springs located close to the periphery of said rotatable mounting means.
Claim 17
Dependent Claim
13 words
A unit according to claim 10, wherein the resilient connection means is precompressed.
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |