Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – Separate valve means actuatable by a common nonmanual...
Patent
1995-06-22
1996-05-07
Nguyen, Hoang
Motors: expansible chamber type
Plural relatively movable or rigidly interconnected working...
Separate valve means actuatable by a common nonmanual...
74 971, F15B 1100, F16H 2144
Patent
active
055135528
ABSTRACT:
This invention provides a three-function control mechanism that employs a single control lever for controlling a first, a second and a third actuator and which may be used in connection with a bulldozer. A torque-amplifying device is provided for assisting in the activation of at least one of the actuators. The control mechanism includes a control bracket, a control handle, and first, second, and third bellcranks pivotably supported by the control bracket. The control mechanism further includes first, second, and third linkage that interconnect the control lever, through the bellcranks, to respective ones of the first, second, and third actuators. The torque-amplifying device is coupled to at least one of the bellcranks in order to assist in the pivoting of the bellcrank. Due to the supporting an arrangement of the control lever, bellcranks, and linkage, the control lever may be moved forward or backward, twisted clockwise or connterclockwise, or moved side to side either separately or in unison. In doing so the control lever thereby respectively actuates the first, second, and third actuators.
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Dresser Industries Inc. "Parts Manual, Models TD7G, TD8G, 100G, 125G Crawler Tractors Form 1128 200 H1", pp. 10-048, 10-056, 10-049, 10-056, 10-057 (Feb. 1, 1988).
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Fiorito Edward G.
Komatsu Dresser Company
Nguyen Hoang
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