Two-motion switch for cordless lawnmower
CA 1055083 A · Owner: Black And Decker Manufacturing Company (The) · Inventors: Lessig, William R. (Iii)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety switch for a cordless electric device such as a lawnmower or other gardening tool. The device includes a cutting or working implement such as a rotating blade an electric motor, a battery power supply and an electric switch for connecting the battery to the motor. To prevent accidental operation of the device a switch control lever is provided which requires two separate and independent motions to be made before the switch can be activated. A switch enclosure is provided which receives the switch operating lever in a close fitting manner. Means are provided for permitting movement of the operating lever to a position external of the housing; from this position, it can be grasped …
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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
- Granted May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
- 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.