Kabushiki Kaisha Komatsu Seisakusho

Michio Okamoto

Masaru Uenoyama

Masaaki Ichimura

Tohru Fukumura

Ichiro Hasegawa

Yoshiaki Harazoe

Shigeru Kurakami

Masakazu Tateishi

Shigeru Izawa

Minoru Ichikawa

Michio Hara

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

Abnormal conditions of the engine and auxiliary machines mounted on a construction equipment are detected by sensors and individually displayed by a plurality of abnormal condition display circuits connected to respective sensors, for the purpose of alarming and displaying any one of the abnormal conditions there are provided a logical sum circuit connected to receive abnormal signals from all abnormal condition display circuits and an alarming circuit energized by the output from the logical sum circuit for giving audible and visible alarms. Further, there are provided a delay circuit connected to receive the output of a sensor provided for the engine system and a deceleration mechanism operated by the output from the delay circuit for decreasing the speed of the engine or stopping it when an abnormal condition occurs in the engine system.

Automatic safety and alarming apparatus for construction equipments

An arrangement for indicating a relative azimuth between two objects remote from each other, such as a control station and a mobile unit remotely controlled by the station, on which are respectively mounted first and second synchronous transmitters for generating and transmitting their respective signals corresponding respectively to true azimuths of the station and the unit. The control station is further provided with a relative azimuth indicating device including outer stational and inner rotatable dials, a rotatable indicator, first and second synchronous receivers, each having means for effecting rotation by receiving one of the signals corresponding thereto, and means for transmitting the respective rotations of the receivers to the inner dial and the indicator, respectively. Thus, not only the relative azimuth between the control station and the mobile unit but also their respective true azimuths are simultaneously read on the device at a glance by a controller in the correlation of the outer and inner dials and the indicator.

Apparatus for indicating relative azimuth

Growing community of inventors

Fujisawa, Japan

Michio Okamoto