Tuff Torq Corporation

Kanzaki Kokyukoki Mfg. Co., Ltd.

Other

Tuff Toro Corporation

Travis S McCloud

Robert Abend

Toshiyuki Hasegawa

Keith Johnson Andrews

Koji Irikura

Hiroaki Shimizu

Norihiro Ishii

Hirohiko Kawada

A transmission for speed changing and steering of a vehicle comprises a first HST and a first differential for speed changing and a second HST and a second differential for steering. The first HST is a combination of a hydraulic pump and motor. The pump is driven by an engine and the motor is drivingly changeable by operation of a speed change pedal. Output power from the motor is transmitted into a pair of first differential output shafts as axles through the first differential. The second HST is a combination of a hydraulic pump and motor. The second pump is driven by output power from the first HST and the second motor is drivingly changeable by operation of a steering wheel. A pair of second differential output shafts are rotated in opposite directions by output power of the motor, so that when turning, the first differential output shaft on the opposite side of the turning direction is accelerated.

Transmission for speed changing and steering of a vehicle

Riding lawn mower

A transmission for speed changing and steering of a vehicle includes a first hydrostatic pump ( ) and motor ( ), a first differential ( ) for speed changing, a second hydrostatic pump ( ) and motor ( ), and a second differential ( ) for steering. A prime mover drives the first pump ( ), and the second pump ( ) is driven by the output from the first motor ( ). The second motor ( ) drives the second differential ( ) for steering the vehicle.

The present invention provides a riding lawn mower comprising: two pairs of ground engaging wheels and disposed at front and rear portions of a vehicle frame ; a cutter blade supported by the vehicle frame ; a drive source mounted on the vehicle frame and having an output shaft extending downwardly; a transmission including i) a casing ; ii) an input shaft substantially vertically supported by the casing , and iii) a pair of axles extending substantially horizontally in opposite directions, the pair of axles supporting each one of the two pairs of ground engaging wheels, the transmission being arranged below the drive source and having the input shaft coupled substantially coaxially with the output shaft of the drive source non-rotatably relative thereto; and power transmitting members and for the cutter blade , the power transmitting members and being provided to rotate with the output shaft

Riding lawn mower and transmission for the same

The present invention provides a riding lawn mower comprising: two pairs of ground engaging wheels 2, 2 and 3, 3 disposed at front and rear portions of a vehicle frame 5; a cutter blade 9 supported by the vehicle frame 5; a drive source 7 mounted on the vehicle frame 5 and having an output shaft 8 extending downwardly; a transmission 20 including i) a casing 21; ii) an input shaft 22 substantially vertically supported by the casing 21, and iii) a pair of axles 4, 4 extending substantially horizontally in opposite directions, the pair of axles supporting each one of the two pairs of ground engaging wheels, the transmission 20 being arranged below the drive source 7 and having the input shaft 22 coupled substantially coaxially with the output shaft 8 of the drive source 7 non-rotatably relative thereto; and power transmitting members 10 and 11 for the cutter blade 9, the power transmitting members 10 and 11 being provided to rotate with the output shaft 8.

A clutch-brake interlocking mechanism interlocks a brake with a clutch to prevent the brake and the clutch from being disengaged simultaneously so as to prevent a vehicle from inadvertently moving on a slope. The interlocking mechanism includes: (a) a friction clutch 10 including a drive-side member 11 and a driven-side member 12, wherein the drive-side member 11 and the driven-side member 12 are engaged when the drive-side member 11 is pressed toward the driven-side member 12; (b) a friction brake 20 including a brake member 22 (and 23) and a brake disk 21, wherein the brake member 22 and the brake disk 21 are engaged when the brake member 22 is pressed toward the brake disk 21; and (c) a coupling member 30 for pressing the drive-side member 11 and the brake member 22. The coupling member 30 is pivotable and has a structure such that when the coupling member 30 is pivoted to a first position, the drive-side member 11 is fully pressed while the brake member 22 is not pressed, when the coupling member 30 is pivoted to a second position, the drive-side member 11 is not pressed while the brake member 22 is fully pressed, and when the coupling member 30 is pivoted between the first position and the second position, both the drive-side member 11 and the brake member 22 are halfway pressed.

Clutch-brake interlocking mechanism for starting and stopping vehicle

A transmission for self-propelled walking lawn mowers comprising a casing (23); an input shaft (10) extending within the casing (23); an output shaft (13) penetrating the casing (23) and connected to drive wheels; an intermediate shaft (25) connected to the input shaft (10) via a transmission gear mechanism (24); a plurality of drive gears (26) and a plurality of driven gears (28) mounted on the output shaft (13) to mesh with each other; connecting means for connecting a gear selected from the plurality of driven gears (28) to the output shaft (13); and a clutch (27) mounted on the intermediate shaft (25) to engage or disengage the drive gear set (26) with or from the intermediate shaft (25). According to the present invention, the load imposed on the clutch is effectively reduced, thereby increasing the service life of the obtained product.

Growing community of inventors

Morristown, TN, United States of America

Travis S McCloud