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US 4,111,066 AGranted
Control means
AssigneeJoy Manufacturing Company
InventorFrank B. Kendrick
Life of this patent
Estimating the term…
Abstract
This invention relates to improved traction control means for a mobile vehicle such as a tractor or excavating machine having a pair of laterally spaced, endless crawler tracks, each of which is powered independently by its own traction motor for generally curvilinear travel of the vehicle at variable speeds in either the forward or reverse direction.
Claims6
A manually operable control means adapted for selectively actuating at least a pair of actuatable means associated with a motive means, said control means comprising:
- an elongated control handle portion having a longitudinal axis;
- elongated rotary actuator means cooperable with such a pair of actuatable means and extending transversely with respect to said longitudinal axis of said handle portion;
- connecting means operatively connecting said handle portion to said actuator means and including means for locating said handle portion adjacent one longitudinal end of said actuator means and rotary connector means cooperable with said handle portion and said actuator means;
- said operative connection providing axial rotation of said actuator means in a first rotation mode responsive solely to rotation of said handle portion about said longitudinal axis for differential actuation of such pair of actuatable means and axial rotation of said actuator means in a second rotation mode responsive solely to movements of said handle portion other than rotation of said handle portion about said longitudinal axis for concomitant actuation of such pair of actuatable means.
1 more element
Dependencies are inferred from the claim text.