Miniature timer
AssigneeDieter Graesslin Feinwerktechnik
InventorsDieter Graesslin, Peter Schonhardt
Life of this patent
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Abstract
A miniature timer device having a housing divided into a plurality of chambers for housing a reduction gear system, a motor and an electrical contact system and wherein bearing means for support of these items are formed integrally with the housing structure.
Claims7
A miniature timing switch comprising an electrically-driven motor, a switchable electric contact for selectively connecting two conductor elements, a gear drive system connecting an output of said motor to drive a programmable actuator mechanism for selectively opening and closing said electric contact, and an insulating housing mounting and containing said motor, contact, conductor elements, gear system, and actuator mechanism, and segregating electrical components from mechanical components of the switch, wherein the housing comprises:
- a base plate;
- an annular, upstanding wall attached to said base plate about a periphery thereof;
- a dividing wall extending parallel to said base plate interiorly of said upstanding wall and spaced from said base plate to form a first, electrical chamber;
- and
- a front plate attached to an end of said upstanding wall opposite said base plate and spaced from said dividing wall to form a second, mechanical chamber separated from said electrical chamber,
- said front plate carrying a portion of said programmable actuator mechanism adjacent an outer surface thereof.
A miniature timing switch housing comprising:
- an annular side wall having first and second ends;
- a base plate attached to and enclosing said first end of said side wall;
- a front plate attached to and enclosing said second end of said side wall;
- and
- an intermediate dividing wall affixed inwardly of and carried by said side wall and spaced from and between said base and front plates,
- the dividing wall separating and electrically insulating said housing into first and second chambers respectively inwardly adjacent said base and front plates,
- said dividing wall having first means carrying a timing motor and an electrical contact switch on a rear side thereof in said first chamber, and
- said dividing wall having second means carrying portions of a gear reduction system and of a programmable switch actuating mechanism on a front side thereof in said second chamber.
Dependencies are inferred from the claim text.