US3848691A - Full time four wheel drive - Google Patents

Full time four wheel drive Download PDF

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Publication number
US3848691A
US3848691A US00409342A US40934273A US3848691A US 3848691 A US3848691 A US 3848691A US 00409342 A US00409342 A US 00409342A US 40934273 A US40934273 A US 40934273A US 3848691 A US3848691 A US 3848691A
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United States
Prior art keywords
differential carrier
gear
hub
drive gear
intermediate shaft
Prior art date
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Expired - Lifetime
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US00409342A
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English (en)
Inventor
C Dolan
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New Venture Gear Inc
Old Carco LLC
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Chrysler Corp
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Application filed by Chrysler Corp filed Critical Chrysler Corp
Priority to US00409342A priority Critical patent/US3848691A/en
Priority to BR9303/73A priority patent/BR7309303D0/pt
Priority to JP48133632A priority patent/JPS4983123A/ja
Application granted granted Critical
Publication of US3848691A publication Critical patent/US3848691A/en
Assigned to FIDELITY UNION TRUST COMPANY, TRUSTEE reassignment FIDELITY UNION TRUST COMPANY, TRUSTEE MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: CHRYSLER CORPORATION
Assigned to CHRYSLER CORPORATION reassignment CHRYSLER CORPORATION ASSIGNORS HEREBY REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID INVENTIONS AND RELEASE THEIR SECURITY INTEREST. (SEE DOCUMENT FOR DETAILS). Assignors: ARNEBECK, WILLIAM, INDIVIDUAL TRUSTEE, FIDELITY UNION BANK
Assigned to CHRYSLER CORPORATION reassignment CHRYSLER CORPORATION PARTES REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID PATENTS ALSO RELEASE THEIR SECURITY INTEREST. (SEE RECORD FOR DETAIL) Assignors: MANUFACTURERS NATIONAL BANK OF DETROIL (CORPORATE TRUSTEE) AND BLACK DONALD E., (INDIVIDUAL TRUSTEE)
Assigned to ACUSTAR, INC., A CORP. OF DE reassignment ACUSTAR, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHRYSLER MOTORS CORPORATION (FORMERLY CHRYSLER CORPORATION)
Assigned to NEW VENTURE GEAR, INC. reassignment NEW VENTURE GEAR, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ACUSTAR, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
    • B60K17/346—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear
    • B60K17/3467—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear combined with a change speed gearing, e.g. range gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/24—Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
    • F16H2048/305—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using manual actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
    • F16H57/0428—Grooves with pumping effect for supplying lubricants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion

Definitions

  • This invention relates to transfer cases for four wheel drive systems, and more particularly to a full time four wheel drive transfer case.
  • this invention comprises a transfer case adapted to provide a full time four wheel drive with or without differentiation of the drive to the front and rear axles.
  • One of the primary objects of this invention is to provide a transfer case which provides a full time four wheel drive at all times, both forward and reverse.
  • Another object of this invention is to provide a transfer case which permits the front axle to operate at a different speed than the rear axle.
  • a further object of this invention is to provide a transfer case of the class described which utilizes a differential adapted to be locked up to render the transfer case capable of providing a non-differentiating drive to the front and rear wheel sets.
  • Still another object of this invention is to provide a transfer case of the type described having a differential which may be easily and manually locked out to provide a positive drive to the front and rear sets of wheels, the lockout being accomplished without stopping the vehicle.
  • Another object of this invention is to provide a transfer case such as described in which the rear output shaft is on the same centerline as the input shaft, thereby eliminating the need for an offset rear axle.
  • the power flow through the front train is thus one-half the torque relieving this train of excessive stress.
  • a further object of this invention is to provide a transfer case of the class described which is economical in construction and efficient in operation.
  • FIG. 1 is a section taken through a transfer case constructed in accordance with this invention.
  • FIG. 2 is a diagrammatic view of the application of the transfer case shown in FIG. 1 to a truck.
  • a transfer case constructed in accordance with the invention is generally indicated at 1.
  • the transfer-case 1 is shown in FIG. 2 as utilized in the drive train of a truck vehicle 3.
  • the transmission output shaft 5 is connected to the transfer case 1 which feeds the power through a propshaft 7 to the axle 9, front wheels 11 and through a propshaft 13 to the axle 15 for the rear wheels 17.
  • the transfer case 1 includes a housing 19 formed in three sections 21, 24and 25 suitable interconnected by fasteners 27.
  • An input shaft 29 is rotatably mounted in one wall 31 of housing 19 by bearings 33.
  • Shaft 29 has an input low gear 35 formed integrally therewith which meshes with a larger gear 37 forming one gear of a gear cluster 39 rotatably journaled by bearing means 41 on a shaft 43 extending between wall 31 and a wall 45 of section 21.
  • An annular lubricant trough or slinger 46 is provided on gear 37 adjacent the teeth thereof. The purpose of trough or slinger 46 will be made apparent hereinafter.
  • Bearing means 41 constitutees a first set 47 of roller bearings separated from a second set 49 of roller bearings by an annular spacer 51.
  • Set 49 is separated from a third set 53 of bearings by a narrow annular spacer 55.
  • a second gear 57 of gear cluster 39 is spaced from gear 37 by a neck 59 having a plurality of radially extending lubricating ports 61 therein for facilitating the flow of lubricant to and from bearing means 41.
  • Gear 57 is smaller than gear 37 and is in constant mesh with a gear 63 rotatably mounted on an elongated shaft 65 by a bushing 66.
  • Gear 57 is also provided with a lubricating or slinger trough 58 and the gear teeth of gear 57 are slightly wider than the teeth of gear 63 for a purpose to be made apparent hereinafter.
  • the end of shaft 65 has a bore 67 therein in which the end 69 of shaft 29 is piloted.
  • Bearings 71 rotatably support shaft 29.
  • Clutching teeth 73 are formed on the outer periphery of shaft 65 and a clutch 75 surrounds and meshes with such teeth.
  • Clutch 75 has a groove or recess 77 therein which receives an actuating yoke (not shown) for shifting the clutch to the right or left as viewed in FIG. 1.
  • Shaft 29 is provided with clutching teeth 79 at its inner end adjacent gear 35.
  • Troughs or ports, the bottoms of which are curved, are provided at Shaft 65 is supported by bearings 83 in a plate 85 mounted in wall 45 and a wall 87 of section 23 and extends rearwardly through section 23 and section 25.
  • a collar 89 is splined at 91 to shaft 65 and has a plurality of pinion shafts 93 connected thereto and extending radially therefrom.
  • Shafts 93 are secured at their outer ends in a carrier 95 of a differential unit 97 formed of two separate parts 99 and 101 and joined together by fasteners 103.
  • Pinions 105 are rotatably supported by shafts 93 on bearing sets and spacers 190 and 191, respectively, and are in mesh with two side gears 107 and 109, one of which has a tubular extension 111 and the other of which is formed on the end of an output shaft 113.
  • Gear 107 and extension 111 are rotatably mounted on shaft 65 by a plurality of sets 115 of bearings separated by spacers 117.
  • sprocket 121 Mounted on extension 111 by spline connection 119 is a sprocket 121.
  • This sprocket is connected by a chain 123 to a front wheel drive sprocket 125 rotatably mounted by bearings 127 and 129 in section 123 of the three-part housing.
  • the shaft 131 of sprocket 125 is spline connected to a yoke 133 which is adapted to be connected to the forwardly extending propshaft 7.
  • a suitable seal is provided at 135.
  • the output shaft 113 is rotatably mounted by bearings 137 in the rearward end of section 25 of the housing.
  • a collar 139 is splined at 141 to the shaft 113 and has a speedometer thread 143 thereon.
  • the speedometer thread 143 is located in a chamber 145 formed in section 25.
  • Chamber 145 is adapted to be supplied with lubricant through pie-shaped openings 147 in wall 149.
  • a breather fitting 148 is located on the outer wall of chamber 145 to permit operation with temperature and pressure variations.
  • a wall 149 is provided in section 25 and includes a hub 151 through which the shaft 113 extends.
  • the opening through hub 151 has two portions, the first of which surrounds a lubricant feeding thread portion 154 of shaft 113.
  • the lubricant feeding portion 153 has a thread 155 thereon for feeding lubricant from chamber 145 through the first portion of the opening in hub 151 toward the differential 97.
  • a second portion of the opening in hub 151 surrounds bearings 157 which rotatably support the shaft 113.
  • Radially extending lubricant ports or passages 159 are provided therein. Port 159 is located at the inward end of the lubricant feeding thread 155 and directs the oil to bore 163.
  • Seal 192 behind bearing 157 prevents oil passage directly to bearing 157.
  • the passage 159 extends radially inwardly to a bore 163 formed in the gear 109 and shaft 113.
  • a first counterbore is provided at 165 and a second counterbore is provided at 167 in the gear 109 and shaft 113.
  • the counterbore 165 pilots the right-hand end of the shaft 65 as viewed in FIG. 1.
  • Bearings 169 rotatably support the end of shaft 65 in the counterbore 167.
  • An elongated passage 171 extends from one end of the shaft 65 to the other, placing the bore 67 in communication with the bore 163.
  • Radial ports 159, 173 and 195 extend from passage 171 to the bearings 157, 115 and 169, respectively.
  • the various passages in the shafts provide for lubrication of the movable components of the transfer case.
  • the annular carrier 95, and particularly part 99 thereof, is provided with a set of annular internal clutch teeth 174 located outwardly of side gear 107.
  • clutch hub 175 is splined at 177 to the extension 111 of side gear 107.
  • Hub 175 has a set of external clutch teeth 179 adapted to be moved into meshing engagement with teeth 174.
  • the clutch can be moved to the right by means of a manually operated yoke (not shown) extending into an annular groove or recess 18] in the hub.
  • a coil spring 183 extends between a shoulder 185 in hub 175 and a retainer 187 positioned against the outer side of side gear 107. It will be seen that when the teeth 179 are moved into meshing engagement with the teeth 174 the carrier 95 is secured for rotation with the sprocket 121 through the hub 175 and extension 111.
  • the shaft 113 is connected by a yoke 189 to the rearwardly extending propshaft 13, thus providing a drive to the rear axle and wheels 15 and 17.
  • the yoke (not shown) which moves the hub 175 to the right as viewed in FIG. 1 is adapted to be locked in that position when the hub teeth 179 are in mesh with the teeth 174 so that spring 183 cannot force the hub teeth out of engagement with the carrier teeth.
  • the lubricant then flows into the bore 67 to the bearings 71.
  • the lip of trough 58 and the ends of the teeth of gear 57 which extend beyond the ends of the teeth of gear 63 all act as slinger rings to sling lubricant up to the interface be tween clutch 75 and the face of teeth 83 and to diametrically opposed passages 84 for lubricating the bushing 66. If the clutch 75 is moved to the right the teeth thereof couple the teeth 73 and 83 of the shaft 65 and gear 63, respectively, thereby coupling the gear to the shaft. Accordingly, a low range drive is transmitted to the shaft 65 through the gear 35, gear cluster 39, gear 63 and clutch 75.
  • the rotation of shaft 65 is imparted to the collar 89, and carrier through shafts 93.
  • the differential 97 acts as a conventional differential and if the resistance to rotation of the front and rear wheels 11 and 17 is the same the carrier 95 and pinions rotate side gears 107 and 109 at the same rate and in the same direction.
  • the side gear 107 drives the sprocket 121 through the spline connection 119, and the sprocket 121, through chain 123, drives the sprocket 125.
  • Rotation of the sprocket is transmitted through yoke 133 and propshaft 7 to the differen' tial for the front axle 9.
  • the differential for the front axle 9 permits differentiation between the two front wheels 11.
  • the drive to the differential for the rear axle 15 is transmitted from side gear 109, through shaft 113, coupling 189 and propshaft 13.
  • the level of lubricant in the transfer case may vary, but it is preferable that it be sufficiently high in the forward section 21 to permit the ingress and egress of lubricant through ports 193 and 194 of walls 87 and 31 of housing 21 into the bearings 47, 49 and 53 passing out through port 61 of gear 37.
  • Lubricant is also pumped by threads 155 to port 159 and through the port to passage 171. From passage 171 lubricant flows through ports 173 to bearings 115 and through port 50 to bushing 66. Lubricant is also pumped by threads 155 through port 159 to elongated bore 171 to bearings 157 and therethrough port 195 to bearings 169 thence through port 161 to bearing 157.
  • Differentiation between front and rear axles is required when the front wheels of the vehicle travel in a different distance than the rear wheels, such as may occur in cornering, for example. Also, varying tire radii, due to load distribution or tire pressure, require different axle speeds. If the conditions are such that different axle speeds are required between the front and rear axles the differential 97 will differentiate to accomplish its specific mission.
  • the side gear 107 rotates at a different speed than the side gear 109 to effect such different drive speeds to the axles.
  • a rail shift lever (not shown) or cable (also not shown) is operated to move the hub 175 to the right as viewed in FIG. 1 until the teeth 179 engage teeth 174. This causes the differential to lock up and provide the same rotation to the front and rear output shafts.
  • a transfer case for power drive systems comprising a housing, an input shaft, a rear wheel output shaft and a front wheel output shaft rotatably mounted in said housing, a differential carrier member, means for con necting said input shaft to said differential carrier member in a driving relationship, said means including an intermediate shaft member, a plurality of gear means adapted to connect said input shaft to said intermediate shaft member, a pinion member carried by said differential carrier member, first and second side gear members in mesh with said pinion member on opposite sides thereof to permit rotation of said side gear members at different speeds, means drivingly connecting said first side gear member to said front wheel output shaft, said second side gear member being connected to said rear wheel output shaft, and locking means drivingly and movably connected to one of said members and adapted to be moved between a first position out of engagement with one of said members and in which said differential carrier member may rotate relative to said side gear members and a second position in engagement with said one member for looking it to another one of said members for locking said intermediate shaft member differential carrier member, pinion member and side gear members together.
  • said plurality of gear means includes a first drive gear connected to said input shaft, a gear cluster having a second drive gear in constant mesh with said first drive gear and a third drive gear, a fourth drive gear, said intermediate shaft member mounting said fourth drive gear for rotation relative thereto, said third drive gear being in constant mesh with said fourth drive gear, said means for connecting said input shaft to said differential carrier member further including means connecting said intermediate shaft member to said differential carrier member, clutch means movable to three positions in one of which said first drive gear is coupled directly to said intermediate shaft member, in a second of which said fourth drive gear is coupled to said interme diate shaft member, and in a third of which said input shaft is not drivingly connected to said intermediate shaft member, bearing means rotatably supporting said input shaft in said intermediate shaft member, and lubricating means on said cluster gear for supplying lubricant to said bearing means when said clutch means is in said second and third positions.
  • a transfer case as set forth in claim 4 further including a coil spring surrounding said tubular extension and extending between said first side gear member and said hub biasing said hub away from said differential carrier member.
  • a transfer case for power drive systems comprising a housing, an input shaft, a rear wheel output shaft and a front wheel output shaft rotatably mounted in said housing, a differential carrier, means for connecting said input shaft to said differential carrier in a driving relationship, a pinion carried by said differential carrier, first and second side gears in mesh with said pinion on opposite sides thereof to permit rotation of said side gears at different speeds, means drivingly connecting said first side gear to said front wheel output shaft, said second side gear being connected to said rear wheel output shaft, and locking means drivingly connected to one of said side gears adapted to be moved between a first position out of engagement with said differential carrier and in which said differential carrier may rotate relative to said side gears and a second position in engagement with said differential carrier for locking it to said one side gear for locking said differential carrier, pinions and side gears together.
  • a transfer case as set forth in claim '7 further including a spring extending between said one side gear and said hub biasing the latter away from said differential carrier.
  • a transfer case as set forth in claim 10 further including a coil spring surrounding said tubular extension and extending between said first side gear and said hub biasing said hub away from said differential carrier.
  • said means for connecting said input shaft to said differential carrier includes a first drive gear connected to said input shaft, a gear cluster having a second drive gear in constant mesh with said first drive gear and a third drive gear, a fourth drive gear, an intermediate shaft mounting said fourth drive gear for rotation relative thereto, said third drive gear being in constant mesh with said fourth drive gear, means connecting said intermediate shaft to said differential carrier, clutch means movable to three positions in one of which said first drive gear is coupled directly to said intermediate shaft, in a second of which said fourth drive gear is coupled to said intermediate shaft and in a third of which said input shaft is not drivingly connected to said intermediate shaft, bearing means rotatably supporting said input shaft in said intermediate shaft, and lubricating means on said cluster gear for supplying lubricant to said bearing means when said clutch means is in said second and third positions.
  • a transfer case as set forth in claim 12 further comprising a bushing between said fourth drive gear and said intermediate shaft, and a slinger trough on said third drive gear, said slinger trough having a lip thereon adapted to direct lubricant from said slinger trough toward one end of said bushing.
  • a transfer case as set forth in claim 16 further including a spring extending between said one side gear and said hub biasing the latter away from said differen' tial carrier.
  • a full time four wheel drive for a vehicle comprising a front axle, a rear axle, a power train including a first output shaft, a transfer case, said transfer case having an input shaft, a rear wheel output shaft and a front wheel output shaft, a rear propshaft connected at one end to said rear wheel output shaft and at its other end to said rear axle, a forward propshaft connected at one end to said front wheel output shaft and at its other end to said front axle, said transfer case including a differ ential carrier member, means for connecting said input shaft to said differential carrier member in a driving relationship, said means including an intermediate shaft member, a pinion carried by said differential carrier member, first and second side gear members in mesh with said pinion member on opposite sides thereof to permit rotation of said side gear member at different speeds, means drivingly connecting said first side gear member to said front wheel output shaft, said second side gear member being connected to said rear wheel output shaft, and locking means drivingly and movably connected to one of said side gear members and adapted to be moved between a first position out of engagement with one of
  • a full time four wheel drive asset forth in claim 21 further including a spring extending between said one side gear member and said hub biasing the latter away from said differential carrier member.
  • said means for connecting said input shaft to said differential carrier member includes a first drive gear connected to said input shaft, a gear cluster having a second drive gear in constant mesh with said first drive gear and a third drive gear, a fourth drive gear, said intermediate shaft mounting said fourth drive gear for rotation relative thereto, said third drive gear being in constant mesh with said fourth drive gear, means connecting said intermediate shaft to said differential carrier member, clutch means movable to three positions in one of which said first drive gear is coupled directly to said intermediate shaft member, in a second of which said fourth drive gear is coupled to said intermediate shaft member and in a third of which said input shaft is not drivingly connected to said intermediate shaft member, bearing means rotatably supporting said input shaft in said intermediate shaft member, and lubricating means on said cluster gear for supplying lubricant to said bearing means when said clutch means is in said second and third positions.
  • a full time four wheel drive as set forth in claim 25 further including a spring extending between said one side gear member and said hub biasing the latter away from said differential carrier member.
  • a transfer case for power drive systems comprising a housing, an input shaft, a rear wheel output shaft and a front wheel output shaft rotatably mounted in said housing, a differential carrier member, means for connecting said input shaft to said differential carrier member in a driving relationship, said means including an intermediate shaft member, a plurality of gear means adapted to connect said input shaft to said intermediate shaft member, a pinion member carried by said differential carrier member, first and second side gear members in mesh with said pinion member on opposite sides thereof to permit rotation of said side gear members at different speeds, means drivingly connecting said first side gear member to said front wheel output shaft, said second side gear member being connected to said rear wheel output shaft, and rotation inhibiting means for inhibiting the rotation of one of said side gear members relative to the other, said rotation inhibiting means being connected to and between two of said members and having first and second operative conditions, the first operative condition of said rotation inhibiting means being one in which said differential carrier member may rotate relative to said gear members, said second operative condition of said rotation inhibiting means being one in which rotation of said differential carrier
  • a full time four wheel drive for a vehicle comprising a front axle, a rear axle, a power train including a first output shaft, a transfer case, said transfer case having an input shaft, a rear wheel output shaft and a front wheel output shaft, a rear propshaft connecting at one end to said rear wheel output shaft and at its other end 1 to said rear axle, a forward propshaft connected at one end to said front wheel output shaft and at its other end to said front axle, said transfer case including a differential carrier member, means for connecting said input shaft to said differential carrier member in a driving relationship, said means including an intermediate shaft member, a pinion carried by said differential carrier member, first and second side gear members in mesh with said pinion member on opposite sides thereof to permit rotation of said side gear member at different speeds, means drivingly connecting said first side gear member to said front wheel output shaft, said second side gear member being connected to said rear wheel output shaft, and rotation inhibiting means for inhibiting the rotation of one of said side gear members relative to the other, said rotation inhibiting means being connected to and between two of said transfer
  • a full time four wheel drive as set forth in claim 30 wherein said means for connecting said input shaft to said differential carrier member includes a first drive gear connected to said input shaft, a gear cluster having a second drive gear in constant mesh with said first drive gear and a third drive gear, a fourth drive gear, said intermediate shaft mounting said fourth drive gear for rotation relative thereto, said third drive gear being in constant mesh with said fourth drive gear, means connecting said intermediate shaft to said differential carrier member, clutch means movable to three positions in one of which said first drive gear is coupled directly to said intermediate shaft member, in a second of which said fourth drive gear is coupled to said intermediate shaft member and in a third of which said input shaft is not drivingly connected to said intermediate shaft member, bearing means rotatably supporting said input shaft in said intermediate shaft member, and lubricating means on said cluster gear for supplying lubricant to said bearing means when said clutch means is in said second and third positions.
  • a transfer case for power drive systems comprising a housing, an input shaft, a rear wheel output shaft and a front wheel output shaft rotatably mounted in said housing, a differential carrier member, means for connecting said input shaft to said differential carrier member in a driving relationship for rotation around an axis, a pinion member carried by said differential carrier member, first and second side gear members rotatable around said axis and in mesh with said pinion member on opposite sides thereof to permit rotation of said side gear members at different speeds, means drivingly connecting said first side gear member to said front wheel output shaft, said second side gear member being connected to said rear wheel output shaft, and rotation inhibiting means for inhibiting the rotation of one of said side gear members relative to the other, said rotation inhibiting means being connected to and between two of said members and having first and second operative conditions, said rotation inhibiting means being rotatable around said axis and spaced radially outwardly from at least one of said side gear members, the first operative condition of said rotation inhibiting means being one in which said differential carrier member may rotate relative to said housing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Retarders (AREA)
US00409342A 1972-11-30 1973-10-24 Full time four wheel drive Expired - Lifetime US3848691A (en)

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US00409342A US3848691A (en) 1972-11-30 1973-10-24 Full time four wheel drive
BR9303/73A BR7309303D0 (pt) 1972-11-30 1973-11-27 Transmissao e caixa de transferencia para tracao de quatro rodas de tempo integral e esta tracao
JP48133632A JPS4983123A (it) 1972-11-30 1973-11-30

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US31104572A 1972-11-30 1972-11-30
US00409342A US3848691A (en) 1972-11-30 1973-10-24 Full time four wheel drive

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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908775A (en) * 1974-12-16 1975-09-30 Int Harvester Co Transfer case assembly with a double duty differential
US3941199A (en) * 1974-07-22 1976-03-02 Warn Industries, Inc. Power transmission for a vehicle
US3993152A (en) * 1975-04-28 1976-11-23 Borg-Warner Corporation Automatic four-wheel drive transfer case
DE2709524A1 (de) * 1976-03-09 1977-09-15 Tatra Np Schalteinrichtung fuer ein zwischenachsdifferential und einen vorderantrieb
US4270409A (en) * 1978-01-18 1981-06-02 Glaze Jack G Torque transfer mechanism
EP0030120A2 (en) * 1979-11-29 1981-06-10 Fuji Jukogyo Kabushiki Kaisha Transmission apparatus for four-wheel drive motor vehicle
US4281735A (en) * 1979-09-26 1981-08-04 Sloma Greg T Apparatus and method for converting a full-time four-wheel drive transfer case for part-time operation
US4304317A (en) * 1980-06-26 1981-12-08 Vanzant Karol W Method and apparatus for converting transfer cases for four-wheel drive vehicles
US4332304A (en) * 1979-12-07 1982-06-01 Barnow Charles A Transfer case conversion kit
EP0151928A2 (en) * 1984-01-26 1985-08-21 Tochigifugisangyo Kabushikikaisha Power Divider
US4631978A (en) * 1983-04-13 1986-12-30 Tochigifujisangyo Kabushikigaisha Device for the distribution of motive power
FR2611613A1 (fr) * 1987-02-24 1988-09-09 Renault Dispositif de transmission a quatre roues motrices
EP0377310A1 (en) * 1988-12-22 1990-07-11 Isuzu Motors Limited Transfer differential gear lock controller
US5271479A (en) * 1991-03-29 1993-12-21 Mazda Motor Corporation Transfer apparatus for a vehicle
US5499951A (en) * 1993-08-02 1996-03-19 Borg-Warner Automotive, Inc. Dynamic range shift transfer case with electromagnetic clutch for coupling one output to the input for modulating torque split
US5597369A (en) * 1994-09-12 1997-01-28 New Venture Gear, Inc. Transfer case with integrated viscous coupling
US5651749A (en) * 1996-02-13 1997-07-29 New Venture Gear, Inc. Full-time transfer case with synchronized dual planetary gear reduction unit
US5688202A (en) * 1996-07-09 1997-11-18 New Venture Gear, Inc. Powershift transfer case
US5697861A (en) * 1996-02-13 1997-12-16 New Venture Gear, Inc. Full-time transfer case with synchronized layshaft-type range shift arrangement
US5700222A (en) * 1996-06-19 1997-12-23 New Venture Gear, Inc. Full-time transfer case with integrated planetary gear assembly
US5702321A (en) * 1996-06-25 1997-12-30 New Venture Gear, Inc. Full-time transfer case with synchronized range shift mechanism and on-demand differentiation control
US5704867A (en) * 1996-07-16 1998-01-06 New Venture Gear, Inc. Full-time transfer case with synchronized range shift arrangement
US5718653A (en) * 1993-08-02 1998-02-17 Borg-Warner Automotive, Inc. Differential assembly for transfer cases and vehicle drivelines
US5860889A (en) * 1995-12-01 1999-01-19 Dana Corporation Tandem forward rear axle lockout
US6880223B2 (en) 2002-04-25 2005-04-19 Milwaukee Electric Tool Corporation Grease slinger
US6887177B1 (en) * 2002-12-24 2005-05-03 Suzuki Motor Corporation Transfer for a four-wheel drive vehicle
US20050221940A1 (en) * 2004-03-30 2005-10-06 Yugang Cui Oil propeller wheel and shaft for power transmission devices
US20090314108A1 (en) * 2008-06-18 2009-12-24 Graves Damon B Power take-off with remotely mounted clutch assembly and lubricated spline
US20150233464A1 (en) * 2014-02-17 2015-08-20 Deere & Company Gearbox lubrication system
US9789759B1 (en) 2016-08-26 2017-10-17 Deere & Company Zero turning radius mower
US10005358B2 (en) 2016-08-26 2018-06-26 Deere & Company Zero turning radius mower
US11209077B2 (en) * 2019-08-12 2021-12-28 Dana Heavy Vehicle Systems Group, Llc Inter-axle differential assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295625A (en) * 1964-06-16 1967-01-03 Kaiser Jeep Corp Automatic four-wheel drive transfer case
US3492890A (en) * 1965-12-29 1970-02-03 Ferguson Res Ltd Harry Four-wheel-drive motor vehicles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295625A (en) * 1964-06-16 1967-01-03 Kaiser Jeep Corp Automatic four-wheel drive transfer case
US3492890A (en) * 1965-12-29 1970-02-03 Ferguson Res Ltd Harry Four-wheel-drive motor vehicles

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941199A (en) * 1974-07-22 1976-03-02 Warn Industries, Inc. Power transmission for a vehicle
US3908775A (en) * 1974-12-16 1975-09-30 Int Harvester Co Transfer case assembly with a double duty differential
US3993152A (en) * 1975-04-28 1976-11-23 Borg-Warner Corporation Automatic four-wheel drive transfer case
DE2709524A1 (de) * 1976-03-09 1977-09-15 Tatra Np Schalteinrichtung fuer ein zwischenachsdifferential und einen vorderantrieb
US4270409A (en) * 1978-01-18 1981-06-02 Glaze Jack G Torque transfer mechanism
US4281735A (en) * 1979-09-26 1981-08-04 Sloma Greg T Apparatus and method for converting a full-time four-wheel drive transfer case for part-time operation
NL8006494A (nl) * 1979-11-29 1981-07-01 Fuji Heavy Ind Ltd Transmissie-inrichting voor een motorvoertuig met vier- wielaandrijving.
EP0030120A2 (en) * 1979-11-29 1981-06-10 Fuji Jukogyo Kabushiki Kaisha Transmission apparatus for four-wheel drive motor vehicle
EP0030120A3 (en) * 1979-11-29 1982-03-24 Fuji Jukogyo Kabushiki Kaisha Transmission apparatus for four-wheel drive motor vehicle
US4332304A (en) * 1979-12-07 1982-06-01 Barnow Charles A Transfer case conversion kit
US4304317A (en) * 1980-06-26 1981-12-08 Vanzant Karol W Method and apparatus for converting transfer cases for four-wheel drive vehicles
US4631978A (en) * 1983-04-13 1986-12-30 Tochigifujisangyo Kabushikigaisha Device for the distribution of motive power
EP0151928A2 (en) * 1984-01-26 1985-08-21 Tochigifugisangyo Kabushikikaisha Power Divider
EP0151928A3 (en) * 1984-01-26 1986-11-26 Tochigi Fugi Sangyo Kk Power divider
FR2611613A1 (fr) * 1987-02-24 1988-09-09 Renault Dispositif de transmission a quatre roues motrices
US5036940A (en) * 1988-12-22 1991-08-06 Isuzu Motors Limited Transfer differential gear lock controller
EP0377310A1 (en) * 1988-12-22 1990-07-11 Isuzu Motors Limited Transfer differential gear lock controller
US5271479A (en) * 1991-03-29 1993-12-21 Mazda Motor Corporation Transfer apparatus for a vehicle
US5351780A (en) * 1991-03-29 1994-10-04 Mazda Motor Corporation Transfer apparatus for a vehicle
US5499951A (en) * 1993-08-02 1996-03-19 Borg-Warner Automotive, Inc. Dynamic range shift transfer case with electromagnetic clutch for coupling one output to the input for modulating torque split
US5718653A (en) * 1993-08-02 1998-02-17 Borg-Warner Automotive, Inc. Differential assembly for transfer cases and vehicle drivelines
US5597369A (en) * 1994-09-12 1997-01-28 New Venture Gear, Inc. Transfer case with integrated viscous coupling
US5860889A (en) * 1995-12-01 1999-01-19 Dana Corporation Tandem forward rear axle lockout
US5651749A (en) * 1996-02-13 1997-07-29 New Venture Gear, Inc. Full-time transfer case with synchronized dual planetary gear reduction unit
US5697861A (en) * 1996-02-13 1997-12-16 New Venture Gear, Inc. Full-time transfer case with synchronized layshaft-type range shift arrangement
US5720688A (en) * 1996-02-13 1998-02-24 New Venture Gear, Inc. Full-time transfer case with synchronized dual planetary gear reduction unit
US5700222A (en) * 1996-06-19 1997-12-23 New Venture Gear, Inc. Full-time transfer case with integrated planetary gear assembly
US5702321A (en) * 1996-06-25 1997-12-30 New Venture Gear, Inc. Full-time transfer case with synchronized range shift mechanism and on-demand differentiation control
US5688202A (en) * 1996-07-09 1997-11-18 New Venture Gear, Inc. Powershift transfer case
US5704867A (en) * 1996-07-16 1998-01-06 New Venture Gear, Inc. Full-time transfer case with synchronized range shift arrangement
US5924952A (en) * 1996-07-16 1999-07-20 New Venture Gear, Inc. Full-time transfer case with syncronized range shift arrangement
US6880223B2 (en) 2002-04-25 2005-04-19 Milwaukee Electric Tool Corporation Grease slinger
US6887177B1 (en) * 2002-12-24 2005-05-03 Suzuki Motor Corporation Transfer for a four-wheel drive vehicle
DE10360514B4 (de) * 2002-12-24 2007-10-18 Suzuki Motor Corp., Hamamatsu Übertragung für ein Fahrzeug mit Vierradantrieb
EP1582777A3 (en) * 2004-03-30 2006-08-02 American Axle & Manufacturing, Inc. Oil propeller wheel and shaft for power transmissions
US7025701B2 (en) * 2004-03-30 2006-04-11 American Axle & Manufacturing, Inc. Oil propeller wheel and shaft for power transmission devices
US20050221940A1 (en) * 2004-03-30 2005-10-06 Yugang Cui Oil propeller wheel and shaft for power transmission devices
US20090314108A1 (en) * 2008-06-18 2009-12-24 Graves Damon B Power take-off with remotely mounted clutch assembly and lubricated spline
US9297426B2 (en) 2008-06-18 2016-03-29 Parker-Hannifin Corporation Power take-off with remotely mounted clutch assembly and lubricated spline
US20150233464A1 (en) * 2014-02-17 2015-08-20 Deere & Company Gearbox lubrication system
US9429224B2 (en) * 2014-02-17 2016-08-30 Deere & Company Gearbox lubrication system
US9789759B1 (en) 2016-08-26 2017-10-17 Deere & Company Zero turning radius mower
US10005358B2 (en) 2016-08-26 2018-06-26 Deere & Company Zero turning radius mower
US11209077B2 (en) * 2019-08-12 2021-12-28 Dana Heavy Vehicle Systems Group, Llc Inter-axle differential assembly

Also Published As

Publication number Publication date
BR7309303D0 (pt) 1974-08-29
JPS4983123A (it) 1974-08-09

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