Adjustable ratio transmission switch
AssigneeProximity Controls, Inc.
InventorJohn F. Rose
Life of this patent
Estimating the term…
Abstract
A shaft position indicator in which the mechanical position of switch actuation is variable with the control of the switch actuators. The switch actuators are controllable through a series of setable cam operated screws or non-mechanical contacts that intercept the switch actuators as they are moved from one position to another, the movement of the cam operated screws overlapping the travel of the switches during one revolution of a lead screw moving the cam operated screws. The input shaft rotation is field adjustable to accept input rotations from 1 to 25 or more revolutions, resulting in accuation of the switch in output performance.
Claims9
An adjustable ratio transmission switch mechanism comprising:
- (a) a housing having a base member supporting a driving means actuated from outside said housing;
- (b) a pair of spatially disposed posts secured to the base member of said housing;
- (c) a lead screw mounted in said housing and in operable connection with said driving means, said lead screw rotatable in either direction;
- (d) a traveling transmission block having threads that engage said lead screw to move vertically with rotation of the same, said transmission block having guideways that communicate with said pair of posts and having a plurality of threaded bores formed therein normal to said guideways and said lead screw;
- (e) a plurality of cam screws threadedly positioned in selected bores of said plurality of threaded bores;
- and
- (f) a plurality of switches disposed in cooperating relation with said plurality of cam screws and operable whereby said plurality of switches may be actuated at infinitely adjustable positions between predetermined rotations of said lead screw by varying the threaded position of said cam screws.
Dependencies are inferred from the claim text.