Kabushiki Kaisha Komatsu Seisakusho

Hiroshi Ota

Masao Yokoyama

Akio Terai

Hidenori Mizuguchi

Masaharu Kon

Hiroyuki Taki

Takashi Miyauchigo

A grip attachment to an implement arm of construction or industrial equipment via a swivel coupling comprises three interdigitating, articulate fingers, two pivotable about a first axis and the other pivotable about a second axis parallel to the first. Each finger consists of a first segment pivotable about the first or second axis and a second segment pin-jointed to the first segment. Hydraulic cylinders are employed to cause pivotal motion of the fingers about the first and second axes, and of their second segments relative to the first segments. An additional hydraulic cylinder acts to cause pivotal displacement of the second axis about the first axis, so that the finger pivotable about the second axis can be extended and contracted with respect to the other two fingers.

Gripping device with interdigitating, articulate fingers

An outrigger for use in a wheel-type vehicle which can be mounted just behind a front wheel where available height for mounting is very limited. The outrigger comprises a support fixedly secured to an axle of the vehicle, a first and a second link both pivotally mounted to the support and being in parallel to each other, an earth contacting member pivotally connected to both first and second links, the earth contacting member being generally L-shaped when viewed from the bottom, and a hydraulic cylinder pivotally connected to the support and the earth contacting member.

Outrigger for use in wheel-type vehicle

A system suitable for positively holding an earthmover in a fixed position during excavating or loading operation, comprising a first air reservoir in communication with a parking brake via a parking control valve. A second air reservoir communicates with front and rear wheel brake cylinders via a dual brake control valve assembly and pneumatic-to-hydraulic converters. A pilot-operated source selector valve coacts with shuttle valves to normally allow communication between the brake control valve assembly and the converters and, upon application of the parking brake by the parking control valve, to place the first air reservoir in communication with the converters. Thus the actuation of the parking control valve results in the application of not only the parking brake but also the service brakes. Interposed between the converters and the brake cylinders, pilot-operated brake locking valves also respond to the actuation of the parking control valve for holding the service brakes applied by permitting fluid flow only in a direction from the converters to the brake cylinders.

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Komatsu, Japan

Hiroshi Ota