F16H61/437

Tractor having dual hydrostatic drive with single hand control and attachment adapter for powered attachments
11479296 · 2022-10-25 ·

A tractor has a base for supporting a motive power source, left and right driven wheels, and left and right transmissions for the respective left and right wheels; a handle structure coupled to the base for grasping by an operator from behind the tractor; a drive system for driving each of the left and right transmissions with motive power from the motive power source; wherein the left and right transmissions are hydrostatic transmissions, further having a speed regulator control lever on each transmission that allows seamless control of the transmission from reverse speed through neutral into forward speed; and a transmission control coupled to each speed regulator control lever; further wherein there is a longitudinally disposed space between the left and right transmissions, and a power take off shaft is disposed in the space extending anteriorly and driven by the motive power source for powering a powered attachment arranged to be attached at the anterior of the tractor, further including a shaft extension of said power take off shaft extending posteriorly for driving a rear power take off for powering a rear mounted powered attachment.

SYSTEM AND METHOD FOR CALIBRATING A HYDRAULIC DRIVE SYSTEM

A method of adjusting a hydraulic drive system includes determining a forward park position value, a reverse park position value, an initial forward position value, and an initial reverse position value of a control device and using these values to calculate a forward buffer value and a reverse buffer value. The forward buffer value and the reverse buffer value are used to determine an adjustment amount for the drive system. The adjustment amount can be used to properly adjust a drive system to avoid system errors.

SYSTEM AND METHOD FOR CALIBRATING A HYDRAULIC DRIVE SYSTEM

A method of adjusting a hydraulic drive system includes determining a forward park position value, a reverse park position value, an initial forward position value, and an initial reverse position value of a control device and using these values to calculate a forward buffer value and a reverse buffer value. The forward buffer value and the reverse buffer value are used to determine an adjustment amount for the drive system. The adjustment amount can be used to properly adjust a drive system to avoid system errors.

Tractor having dual hydrostatic drive with single hand control and attachment adapter for powered attachments
09731759 · 2017-08-15 ·

A tractor has a base for supporting a motive power source, left and right driven wheels, and left and right transmissions for the respective left and right wheels. A handle structure is coupled to the base for grasping by an operator from behind the tractor. A drive system drives each of the left and right transmissions with motive power from the motive power source. A single lever hand control is provided for operation by a single hand of the operator for controlling both left and right transmissions seamlessly each between reverse speed through neutral and forward speed.

HYDRAULIC CONNECTION

Disclosed is a system comprising a variator and a transmission. The transmission housing includes a mounting joint transmission face and one or more transmission ports disposed in the mounting joint transmission face that are fluidly connected in a one-to-one correspondence to one or more transmission channels in the transmission housing. The variator housing may comprise a mounting joint variator face coupled to the mounting joint transmission face and one or more variator ports disposed in the mounting joint variator face. The one or more variator ports may be fluidly connected in a one-to-one correspondence to one or more variator channels in the variator housing. The one or more variator ports are fluidly connected in a one-to-one correspondence to the one or more transmission ports without the use of one or more external hoses to fluidly connect the one or more variator ports to the one or more transmission ports.

HYDRAULIC CONNECTION

Disclosed is a system comprising a variator and a transmission. The transmission housing includes a mounting joint transmission face and one or more transmission ports disposed in the mounting joint transmission face that are fluidly connected in a one-to-one correspondence to one or more transmission channels in the transmission housing. The variator housing may comprise a mounting joint variator face coupled to the mounting joint transmission face and one or more variator ports disposed in the mounting joint variator face. The one or more variator ports may be fluidly connected in a one-to-one correspondence to one or more variator channels in the variator housing. The one or more variator ports are fluidly connected in a one-to-one correspondence to the one or more transmission ports without the use of one or more external hoses to fluidly connect the one or more variator ports to the one or more transmission ports.

Hydrostatic transmission pedal stroke limiter
11168463 · 2021-11-09 · ·

A hydrostatic transmission pedal stroke limiter includes a stop connected through a linkage to a range shift lever for limiting the travel of the hydrostatic transmission actuator arm when the range shift lever is in the low gear range, and reducing sound significantly when operating in the low gear range.

Hydrostatic transmission pedal stroke limiter
11168463 · 2021-11-09 · ·

A hydrostatic transmission pedal stroke limiter includes a stop connected through a linkage to a range shift lever for limiting the travel of the hydrostatic transmission actuator arm when the range shift lever is in the low gear range, and reducing sound significantly when operating in the low gear range.

Transaxle

A transaxle with a brake of the present invention includes the braking device comprising a plurality of brake discs, fixing plates, and a brake operating member, wherein the brake discs have an inner gear tooth portion that can be fitted to an outer gear tooth portion of an output gear of the motor shaft so as not to rotate relative to the outer gear tooth portion and is slidably fixed in the axial direction of the motor shaft, wherein the fixing plates are fixed to the transaxle casing so as not to rotate relative to each other and are slidably fixed in the axial direction of the motor shaft, and wherein the brake operating member provides a predetermined gap between the fixing plates and the brake discs when the brake discs are not pressed.

Transaxle

A transaxle with a brake of the present invention includes the braking device comprising a plurality of brake discs, fixing plates, and a brake operating member, wherein the brake discs have an inner gear tooth portion that can be fitted to an outer gear tooth portion of an output gear of the motor shaft so as not to rotate relative to the outer gear tooth portion and is slidably fixed in the axial direction of the motor shaft, wherein the fixing plates are fixed to the transaxle casing so as not to rotate relative to each other and are slidably fixed in the axial direction of the motor shaft, and wherein the brake operating member provides a predetermined gap between the fixing plates and the brake discs when the brake discs are not pressed.