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US 6,861,601 B2Granted
Mechanical delay timer
OwnerTroy A. Heieninventor
Life of this patent
Estimating the term…
Abstract
A timer for delaying the operation of a toggle switch for a pre-set interval includes a mechanical, spring powered timer which drives a cam that engages the toggle of a conventional wall switch to move the toggle from one position to another. The timer is contained within a housing which, in turn, detachably connects to a housing floor that is mounted over the toggle switch cover plate.
Claims11
A mechanical delay timer for moving the lever of a toggle switch to thereby turn the switch on or off, comprising:
- a rotatable cam plate having a flat surface;
- rail means extending outwardly from said surface, said rail means positioned on the plate to form a generally spiral cam track that is arranged to engage said switch lever;
- a spring powered timer means arranged to rotate said cam plate at a predetermined rate;
- and
- means to mount said timer to the switch with said switch lever positioned within said cam track thereby causing said switch lever to move up or down as the cam plate rotates.
2 more elements
A mechanical delay timer for turning a toggle switch on or off, comprising:
- a rotatable cam plate having rail means extending outwardly therefrom and positioned on said plate to form a generally spiral cam track of uniform width that is arranged to engage a lever operating said toggle switch so as to move the lever upward or downward as the cam plate rotates;
- a spring powered timer arranged to rotate said cam plate at a predetermined rate for a set time;
- and
- means to mount said timer on said toggle switch.
1 more element
Dependencies are inferred from the claim text.