Patent US2906388A successfully refreshed from Google Patents.
Patent US3770075A successfully refreshed from Google Patents.
US3770075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free wheeling 2-speed motor wheel
Assignee: Eaton Corp
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Filing: 1972-03-20
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Granted: 1973-11-06
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Expires: 1992-03-20
Abstract
Abstract A motor wheel for use in a ground engaging drive wheel of a vehicle includes a hydraulic motor disposed in a housing, the output shaft of the motor is connectable through a complex planetary gearing and clutch arrangement to drive a casing which is rotatably mounted relative to the housing. The driving force from the output shaft of the hydraulic motor is transmitted to a planetary gear set by means of an arcuately configured sun gear formed on one end of the drive shaft, the planetary gears are disposed about the sun gear to transmit the driving force to a ring gear mounted in the casing. A planetary carrier is disposed in the casing for supporting the planetary gears during relative rotative movement about the sun gear. The planetary carrier is normally disposed in an initial neutral position for free rotative motion relative to both the casing and the housing to thereby provide free wheeling of the motor wheel. The planetary carrier is axially slidable relative to the sun gear and ring gears in either direction from the neutral position to thereby provide a high speed and a low speed gear ratios. Driving engagement between the carrier and the housing is established upon movement of the carrier in one direction from the neutral position and driving engagement between the carrier and the casing is established upon movement of the carrier axially in the other direction from the neutral position. Springs are provided to maintain the carrier normally centered and out of engagement with either the casing or the housing to provide the free wheeling condition of said wheel motor. Hydraulically actuated annularly shaped clutch pistons are disposed in recesses in the casing and housing respectively and are operable upon the application of fluid pressure thereto to move the carrier into driving engagement with either the housing or the casing to thereby provide a hydraulically operated motor wheel having both direct and low speed driving ratios as well as free wheeling. Valve means are provided to part pressurized hydraulic fluid for actuating the pistons and to simultaneously reverse fluid flow through the hydraulic motor upon actuation thereof to provide the required direction of rotation of the hydraulic motor.
Inventors
- 👤 E Vegners
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:54
CPC Classifications
B; B60; B60K; B60K7/00; B60K7/0015; B60K17/00; B60K17/04; B60K17/043; B60K17/046; B60K2007/0038; B60K2007/0092; B60Y; B60Y2200/00; B60Y2200/40; B60Y2200/41; B60Y2200/415
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
225 words
A hydraulic motorized wheel for use as a drive wheel of a vehicle, said motorized wheel comprising a housing adapted to be mounted on a vehicle, a casing rotatably mounted relative to said housing, a hydraulically operated motor mounted on said housing having a rotatable drive shaft extending into said casing, a planetary gear set in said casing, the sun gear of said planetary gear set being driven by said drive shaft, said planetary gear set further including a planetary gear disposed in driving engagement with said sun gear, a planetary gear carrier mounted in said casing for relative sliding movement in either direction from a neutral position, said planetary carrier being freely rotatable relative to both said casing and said housing when in said neutral position, and a ring gear mounted in said casing in driving engagement with said planetary gear, first clutch means in said motorized wheel operable upon actuation thereof to move said planetary carrier in one direction from said neutral position to prevent relative rotation between said housing and said planetary carrier and to provide a first drive ratio, and second clutch means in said motorized wheel operable upon actuation thereof to move said planetary carrier in the other direction from said neutral position to prevent relative rotation between said casing and said planetary carrier to provide a second drive ratio.
Claim 2
Dependent Claim
225 words
A hydraulic motorized wheel for use as a drive wheel of a vehicle, said motorized wheel comprising a housing adapted to be mounted on a vehicle, a casing rotatably mounted relative to said housing, a hydraulically operated motor mounted on said housing having a rotatable drive shaft extending into said casing, a planetary gear set in said casing, the sun gear of said planetary gear set being driven by said drive shaft, said planetary gear set further including a planetary gear disposed in driving engagement with said sun gear, a planetary gear carrier mounted in said casing for relative sliding movement in either direction from a neutral position, said planetary carrier being freely rotatable relative to both said casing and said housing when in said neutral position, and a ring gear mounted in said casing in driving engagement with said planetary gear, first clutch means in said motorized wheel operable upon actuation thereof to move said planetary carrier in one direction from said neutral position to prevent relative rotation between said housing and said planetary carrier and to provide a first drive ratio, and second clutch means in said motorized wheel operable upon actuation thereof to move said planetary carrier in the other direction from said neutral position to prevent relative rotation between said casing and said planetary carrier to provide a second drive ratio.
Claim 3
Dependent Claim
81 words
The invention of claim 1 wherein said first and second clutch means are selectively actuatable by hydraulic pressure, and valve means in fluid communication with said hydraulic motor and both of said clutch means, said valve means being operable to reverse the direction of operating fluid flow to said hydraulic motor simultaneously with actuation of said second clutch means after actuation of said first clutch means to reverse rotation of sAid output shaft simultaneously with actuation of said second clutch means.
Claim 4
Dependent Claim
98 words
The invention of claim 1 wherein said hydraulic motor includes an externally toothed member, an internally toothed member, and motor valve means, said externally toothed member being operably associated with said drive shaft and eccentrically disposed relative to said internally toothed member for rotational and orbital movement relative to an axis thereof, the teeth of said members intermeshing to define expanding and contracting fluid chambers upon relative rotational and orbital movement therebetween, said motor valve means being connected to admit and exhaust fluid from said chambers in synchronism with one of the movements of said externally toothed member.
Claim 5
Dependent Claim
62 words
The invention of claim 3 wherein the drive shaft of said hydraulic motor includes splined portions thereon, and said externally toothed member has a splined bore therein, one of said splined portions of said drive shaft being drivingly received in the splined bore of said externally toothed member, another of said splined portions being the sun gear for said planetary gear set.
Claim 6
Dependent Claim
267 words
A hydraulic motorized wheel for use as a drive wheel vehicle, said motorized wheel comprising a housing adapted to be mounted on a vehicle, a casing rotatably mounted relative to said housing, a hydraulically operated motor mounted on said housing having a rotatable drive shaft extending into said casing, a planetary gear set in said casing, the sun gear of said planetary gear set being driven by said drive shaft, said planetary gear set further including a planetary gear disposed in driving engagement with said sun gear, a planetary gear carrier mounted in said casing for normally free rotation relative to both said casing and said housing, and a ring gear mounted in said casing in driving engagement with said planetary gear, said planetary gear carrier being axially slidable relative to said ring and sun gear in either direction from an initial neutral position where said planetary carrier is freely rotatable relative to both said casing and said housing, first clutch means in said motorized wheel operable upon actuation thereof to prevent relative rotation between said housing and said planetary carrier and to provide a first drive ratio, said first clutch means including pressure actuatable means for moving said carrier in one direction from said neutral position, second clutch means in said motorized wheel operable upon actuation thereof to prevent relative rotation between said casing and said planetary carrier to provide a second drive ratio, said second clutch means including pressure actuatable means for moving said carrier in the other direction from said initial neutral position, and means normally biasing said carrier toward said initial neutral position.
Claim 7
Dependent Claim
267 words
A hydraulic motorized wheel for use as a drive wheel vehicle, said motorized wheel comprising a housing adapted to be mounted on a vehicle, a casing rotatably mounted relative to said housing, a hydraulically operated motor mounted on said housing having a rotatable drive shaft extending into said casing, a planetary gear set in said casing, the sun gear of said planetary gear set being driven by said drive shaft, said planetary gear set further including a planetary gear disposed in driving engagement with said sun gear, a planetary gear carrier mounted in said casing for normally free rotation relative to both said casing and said housing, and a ring gear mounted in said casing in driving engagement with said planetary gear, said planetary gear carrier being axially slidable relative to said ring and sun gear in either direction from an initial neutral position where said planetary carrier is freely rotatable relative to both said casing and said housing, first clutch means in said motorized wheel operable upon actuation thereof to prevent relative rotation between said housing and said planetary carrier and to provide a first drive ratio, said first clutch means including pressure actuatable means for moving said carrier in one direction from said neutral position, second clutch means in said motorized wheel operable upon actuation thereof to prevent relative rotation between said casing and said planetary carrier to provide a second drive ratio, said second clutch means including pressure actuatable means for moving said carrier in the other direction from said initial neutral position, and means normally biasing said carrier toward said initial neutral position.
Claim 8
Dependent Claim
33 words
The invention of claim 5 wherein said first and second clutch means comprise first and second clutching surfaces on said carrier and corresponding adjacent clutching surfaces on said housing and said casing respectively.
Claim 9
Dependent Claim
55 words
The invention of claim 6 wherein a first element of clutch frictional material is disposed between the first clutching surface on said carrier and the corresponding surface on said housing, and a second element of clutch frictional material is disposed between the second clutching surface on said carrier and the corresponding surface on said casing.
Claim 10
Dependent Claim
124 words
The invention of claim 7 wherein said first clutch means includes a first piston received in a recess in said casing, said first piston having a bearing surface disposed for abutting engagement with a bearing surface of said carrier, said second clutch means including a second piston received in a recess in said housing, said second piston having a bearing surface disposed for abutting engagement with a bearing surface of said carrier, and wherein the biasing means for normally biasing said carrier toward said initial neutral position comprise biasing means acting between saId casing and said first piston and said housing and said second piston to constantly urge said surfaces toward abutting engagement and to thereby urge said carrier toward the initial neutral position.
Claim 11
Dependent Claim
47 words
The invention of claim 5 wherein said first and second pressure actuatable means comprise annular pistons received in recesses in said casing and said housing respectively on opposite sides of said carrier and selectively pressurizable passage means in said casing and said housing communicating with said recesses.
Claim 12
Dependent Claim
53 words
The invention of claim 9 wherein said means normally biasing said carrier toward said initial neutral position comprise springs acting between the casing and its associated piston and the housing and its associated piston thereby biasing said pistons into engagement with said carrier and thereby biasing said carrier toward said initial neutral position.
Claim 13
Dependent Claim
269 words
A hydraulic motorized wheel for use in a vehicle, said motorized wheel comprising a housing adapted to be mounted on a vehicle, a casing mounted on said housing for rotation relative thereto, a reversible rotary hydraulic motor disposed on said housing and having rotatable output shaft extending into said casing, a planetary gear set disposed in said casing, said planetary gear set including a sun gear, planetary gears, planetary gear carrier means and a ring gear, the sun gear of said planetary gear set being drivingly connected for rotation with the output shaft of said hydraulic motor, first clutch means operable upon actuation thereof to prevent rotation of said casing relative to said sun gear to thereby provide a first drive ratio between said output shaft and said casing, second clutch means operable upon actuation thereof to prevent rotation of another portion of said planetary gear set relative to said housing to thereby provide a second driving ratio between said output shaft and said casing, a first valve in fluid communication with said motorized wheel, said first valve being operable to selectively actuate said first and second clutch means, and a second valve in fluid communication with said motorized wheel, said second valve being operable to control the direction of operating fluid flow to said hydraulic motor thereby controlling the direction of rotation of said output shaft, said first and second valve means being interconnected for simultaneous operation whereby said output shaft will be caused to rotate in one direction upon actuation of said first clutch means and in the opposite direction upon actuation of said second clutch means.
Claim 14
Dependent Claim
269 words
A hydraulic motorized wheel for use in a vehicle, said motorized wheel comprising a housing adapted to be mounted on a vehicle, a casing mounted on said housing for rotation relative thereto, a reversible rotary hydraulic motor disposed on said housing and having rotatable output shaft extending into said casing, a planetary gear set disposed in said casing, said planetary gear set including a sun gear, planetary gears, planetary gear carrier means and a ring gear, the sun gear of said planetary gear set being drivingly connected for rotation with the output shaft of said hydraulic motor, first clutch means operable upon actuation thereof to prevent rotation of said casing relative to said sun gear to thereby provide a first drive ratio between said output shaft and said casing, second clutch means operable upon actuation thereof to prevent rotation of another portion of said planetary gear set relative to said housing to thereby provide a second driving ratio between said output shaft and said casing, a first valve in fluid communication with said motorized wheel, said first valve being operable to selectively actuate said first and second clutch means, and a second valve in fluid communication with said motorized wheel, said second valve being operable to control the direction of operating fluid flow to said hydraulic motor thereby controlling the direction of rotation of said output shaft, said first and second valve means being interconnected for simultaneous operation whereby said output shaft will be caused to rotate in one direction upon actuation of said first clutch means and in the opposite direction upon actuation of said second clutch means.
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |