Axial cam rotary switch
AssigneeEECO Incorporated
InventorsFrank J. Bruder, Robert D. Taylor
Life of this patent
Estimating the term…
Abstract
A rotary switch having a multiple throw axial cam rotor and operatively aligned detent teeth. One held stationary contact spring spider has plural radially disposed axially-movable cam follower switch contact arms engaging the axial cam, and also has plural detent springs engaging the axial detent teeth. A base has stationary contacts to be selectively engaged by the switch contacts, and a journal post upon which the rotor is rotatable. An externally accessible shaft upon the rotor has a surrounding resilient "O" ring. A housing sealed to the base and bearing upon the "O" ring seals the switch. The switch may be fabricated in DIP size and contact configuration.
Claims8
A rotary switch, comprising;
- (a) a rotor (1), having an axial cam (2) with plural lobes (3-6) at plural radii, and also axial-detent teeth (10) operatively aligned with said lobes,
- (b) one stationary electrically-conductive contact spring spider (16), having plural radially outwardly projecting axially-movable cam-follower switch arms (20-23) substantially coplanar with said spider to selectively engage said lobes upon rotation of said rotor,
- said one spring spider also having plural integral detent springs (25,26) engaging said axial-detent teeth,
- (c) an insulative base (15) having stationary electrically-conductive contacts (28-31) passing through said base in a rectilinear pattern and disposed to be selectively engaged by said switch arms upon axial displacement thereof by said lobes upon rotation of said rotor,
- (d) an insulative shaft (12) integral with said rotor,
- (e) a resilient "O" ring (33) surrounding said shaft, and
- (f) an insulative housing (35) sealed to said base and mechanically bearing upon said "O" ring a substantially constant amount to seal said rotary switch.
Dependencies are inferred from the claim text.