Push-to-start appliance program timer and method utilizing snap-action switch
CA 2444392 A1 · Owner: Pearson, James E. · Inventors: Pearson, James E.; Rodesiler, Jack
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A program timer for use with commercial or consumer appliances provides a single, user knob interface that allows the desired selection of a programmed cycle and a push-to-start, function. To preclude inadvertent program operation and enhance the life of the, program timer, a snap-action switch is utilized to provide the push-to-start functionality. As, such, actuation of the start switch provides a positional hysteresis that prevents teasing of, the switch. The rapid snap-action opening and closing of the switch contacts precludes or, minimizes the arc sustained between the contacts so as to greatly increase the life of the, start switch. In one embodiment an actuation wheel larger …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.