Machine element or mechanism – Control lever and linkage systems – Multiple controlling elements for single controlled element
Patent
1993-07-13
1994-11-22
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlling elements for single controlled element
200 6157, B62D 104, H01H 900, H01H 312
Patent
active
053658035
ABSTRACT:
The design and manufacture of past steering and transmission shifting control devices utilized an upright and rockable control handle for the steering function and an actuating element in close association with the control handle for effecting a speed change function of a multi-speed transmission. The design of the control handle does not offer a rotatable steering member which is familiar and easy to operate. The present invention overcomes these problems by providing a steering wheel for steering a vehicle. A means for changing the speed ratio of the transmission is mounted on a front portion of the steering wheel and extends from a front surface so that the changing means may be conveniently accessed by an operator. A means for selecting either the forward or reverse drive condition of the transmission is mounted on the back portion of the steering wheel and extends from the back surface so that the selecting means may be conveniently accessed by the operator. The use of the steering wheel results in a convenient and simple steering and transmission shifting control device.
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Exhibit A-Literature from RMH Control AB, Stockholm Sweden, Circa 1988/89.
Exhibit B-Literature from Volvo BM, (associated with VME Industries, Sweden AB) Circa 1988.
Exhibit C-Annotated Literature on a Control Offered by Liebherr International AG, of Switzerland, or related subsidiary (Circa 1988/89.
Exhibit D-Photograph of a control handle offered by Engstrom Nilson Maskin AB of Sweden and/or Engson of Sweden (Circa 1988).
Exhibit E-Literature on a Liebherr-America, Inc. "Litronic" Excavator (Circa 1988/89).
Exhibit F-Literature form Cyber-Tech, Inc. of Portland, Oregon; on a Saw-Handle Control (Circa Oct., 1988).
SAE Technical Paper "New Technology for Powershift Transmissions in Hydrostatik Driven Wheel Excavators and Wheel Loaders" by E. Mann Sep. 10-13, 1990.
Kelley Craig B.
Nelson David E.
Nelson Peter M.
Caterpillar Inc.
Charlton Diana L.
Herrmann Allan D.
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