Switching mechanism for fluid-operated gear shifters
AssigneeZahnradfabrik Friedrichshafen AG
InventorsAlfred Schobinger, Gunter Schwarz, Willy Beig
Life of this patent
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Abstract
A shift lever for the selective actuation of power tools on a utility carries a rotary and axially shiftable knob which can be indexed by ball checks in a plurality of angular positions to establish different speed ratios of the vehicular transmission by actuating respective microswitches through cams bearing upon mobile bodies which are lodged in apertures of a stationary collar surrounding an extension of the knob. A rocker switch on that knob can be flipped by the fingers of the operator to switch between forward and reverse drive.
Claims9
In an automotive vehicle having traction wheels driven from an engine via a transmission provided with electrically controllable fluid-operated gear-shifting means, said vehicle being further provided with a fluid-operated working implement powered by the engine,
- the combination therewith of a switching mechanism for the control of said implement and said gear-shifting means comprising:
- a lever universally jointed on a base for selective pivotal motion into any of a plurality of implement-controlling positions;
- a housing rigid with said lever;
- a knob above said base having a stem journaled in said housing for selective rotation into a plurality of transmission-controlling angular positions relative to said lever;
- and
- a plurality of microswitches in said housing actuatable by cam means on said stem to close different control circuits for said gear-shifting means in said angular positions.
Dependencies are inferred from the claim text.