Taisei Road Construction Co., Ltd.

Taisei Road Constructions Co., Ltd.

Tatsuhiko Chiba

Ken-ichi Igarashi

Akira Obuchi

Kenji Nakano

A road surface heating apparatus for repairing a deteriorated asphalt paved road includes an air shut out device with skirt members surrounding the heating panel so as to prevent air from entering into the heating apparatus, thereby restraining smoke generation. The generated smoke is filtered and purified by an after-burner and a catalyst burner and then exhausted, thus air pollution problems at the work site are solved.

Road surface heating apparatus for reproducing the deteriorated road

A scarifier suspended beneath the body of an automotive vehicle such that it is vertically movable by means of cylinders. It comprises a suspending frame provided on a main frame vertically movable by means of the cylinders so that it may be freely slidable in the widthwise direction of the vehicle body, a plurality of supporting bars horizontally disposed within the suspending frame so that they may extend in the longitudinal direction of the suspending frame and so that any two adjacent bars may be connected in series to each other by means of a pin, said supporting bars being each connected to a cylinder vertically provided on the suspending frame so that each bar may be inclined in the longitudinal direction, and a multiplicity of claws provided, at prescribed intervals, on the supporting bars by way of pins in such a manner that they extend downwards from the pins and that they are swingable about the pins.

Scarifier

Disclosed is a road surface heating vehicle as well as a gas supply system therefor. The vehicle is provided with heating panels and a gas tank. It further comprises a plurality of vaporizers connected in parallel to each other by a gas line and a liquid line. The gas line is connected to the heating panels via its branch lines. The gas and liquid lines are each mounted with a solenoid valve and a pressure adjusting valve. The gas tank is equipped with necessary instruments involved, the vehicle having a body equipped with an operating board containing a microcomputer which automatically makes its control operation based on the use of the associated members, in such a way as to keep the gaseous pressure to fall within a specified range of levels. The system comprises members corresponding to the above-mentioned members constituting the vehicle, including a microcomputer adapted to automatically control the gaseous pressure so that the same may be kept within a specified range of levels.

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Kawaguchi, Japan

Tatsuhiko Chiba