G - Physics – 05 – G
Patent
G - Physics
05
G
142/45
G05G 1/00 (2006.01) F16C 1/16 (2006.01) F16C 1/22 (2006.01)
Patent
CA 1235981
PUSH-PULL VERNIER CONTROL AND METHOD OF MANUFACTURE THEREOF Abstract of the Disclosure A control assembly primarily intended for use in manually regulating the operating speed of power equipment in which fine adjustments may be obtained by rotating the control knob and rapid changes in speed may be achieved by shifting the knob axially. The assembly includes an outer one-piece sleeve adapted to be mounted upon an instrument panel or engine housing and permanently joined + to a flexible casing containing the operating wire or cable. A plunger assembly is rotatably and slidably received within the sleeve, the plunger assembly including a thin-walled plunger tube having a control knob ultrasonically welded to one end of the plunger and an improved swivel connection joining the operating wire at the plunger's opposite end. The side wall of the plunger tube has a non-circular opening through which a retractable follower (ball) protrudes for engaging the internal threads of the sleeve when vernier adjustment is desired. A preferred method for making the improved plunger assembly utilizing thin-wall tubing is also disclosed.
471628
Arens Controls Inc.
Borden Ladner Gervais Llp
LandOfFree
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