Kabushiki Kaisha Komatsu Seisakusho

Masaaki Ichimura

Masaru Uenoyama

Yasumasa Tarumizu

Hideo Hara

Kohei Kusaka

Toshitaka Suketomo

Hitoshi Sawamura

Hiroaki Tamaki

Michio Okamoto

Tohru Fukumura

Kyoji Uranaka

Yuzuru Itoh

Masakazu Tateishi

Minoru Ichikawa

Kiyouzi Uranaka

Yuuichi Anami

Complex machine tool

A controller device for a wheeled construction machine has a variable speed lever for electrically controlling steps of speed of a transmission disposed near a steering wheel. It comprises a combination switch box disposed at the top of a steering column, a variable speed lever of a length enough for the leading end thereof to protrude slightly from the periphery of the steering wheel disposed on the left side of the combination switch box in such a manner as to approximate the steering wheel, and a control lever for turning on and off various lamps disposed protrudingly on the right side of the combination switch box. At least either of the variable speed lever and the control lever is attached to the combination switch box.

Controller device for wheeled construction machine

A tank assembly for a hydraulic system including a hydraulic load device and a transmission. The tank assembly comprises a tank, a weir mounted on the bottom wall of the tank, which weir functions as a partition wall for dividing the inside of the tank into a first and a second reservoirs and allows fluid to overflow from the first reservoir to the second reservoir, the first reservoir being adapted to receive fluid from both the hydraulic load device and the transmission, a dust collector mat disposed on the bottom wall of the tank for collecting dust from drained fluid, and a strainer mounted inboard on one of the side walls of the tank and extending within the second reservoir.

Tank assembly for hydraulic system

A pair of pumps deliver pressurized fluid to a steering control valve assembly controlling the operation of a steering cylinder. The steering control valve assembly diverts any excess of the incoming pressurized fluid to a hoist control valve assembly controlling the operation of a pair of implement hoist cylinders. The hoist control valve assembly also diverts any excess of the incoming fluid away from the hoist cylinder pair, this time to a retarder or brake system for cooling same. The retarder receives additional cooling fluid from a hydraulic torque converter, to which the fluid has been forced from another pump. On leaving the retarder the pressurized fluid is cooled and then delivered to a transmission lubricating circuit.

Integrated hydraulic circuit for off highway work vehicles

A warning device for a vehicle is capable of checking a disorder in the vehicle in a sequential order through a dialog between the device and an operator. The device first indicates conduction of a test before a starter is turned on and the operator depresses a test switch in compliance with this indication to test whether all indication units and buzzer can operate normally. After finishing this test, any disorder which may exist at various starting check points such as a hydraulic fluid level and a radiator water level is detected by an associated indication unit. After the starting check up has been completed and the starter is turned on, driving check points such as a torque converter oil temperature and a brake air pressure are constantly watched and if there occurs any disorder in such check points, the operator is informed of such disorder by operation of all of the indication units and the buzzer. The operator then operates only the indication unit associated with the check point where the disorder has occurred by manipulation of a check switch.

Warning device for a vehicle

A brake mechanism for a tractor comprising an air tank containing compressed air, a brake valve connected to said air tank, a brake pedal operatively connected to said brake valve, a pair of solenoid operated selector valves, a pair of throttle valves each being connected to said one of the selector valves, respectively, a pair of double check valves each being connected to said one of the selector valves at one end thereof, the other end of which being connected to said one of the throttle valves, respectively, two pairs of brake chambers each being connected to one of said double check valves, respectively, and a switch connected to said selector valves.

Brake mechanism for tractors

A hydraulic boosting apparatus in a braking system, which apparatus has an accumulator which provides an oil pressure accumulated in a high pressure circuit, the oil pressure being supplementarily used in addition to an oil pressure from the usual hydraulic circuit for a braking operation. A booster cylinder has a booster piston, a free spool and an operating spool which are arranged coaxially with each other. There is provided a pressure chamber between the booster piston and the free spool, which chamber communicates with a first working chamber defined in and serving to close an on-off valve which is, in turn, in communication with the accumulator. There is also provided a closed chamber between the free spool and the operating spool, which chamber communicates with a second working chamber defined in and serving to open the on-off valve.

Hydraulic boosting apparatus in braking system

Growing community of inventors

Kawasaki, Japan

Masaaki Ichimura