Spring feeding mechanism
CA 1180514 A · Owner: Irwin, Lawrence F. · Inventors: Irwin, Lawrence F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a spring feeding mechanism for use with plumbing tools of the type having an elongated coiled spring wire or, plumber's snake and means for rotating the snake about its longitudinal axis. The mechanism includes a snake engaging element movable into and out of driving engagement with the snake for feeding the snake axially of itself. The engaging element includes first and second hingeably interconnected jaws movable from a first open position to a second closed position proximate the snake, a pair of feed rollers being rotatably carried by the second jaw. At least one feed roller is rotatably carried by the first jaw, each of the feed rollers being adapted to rotate about an …
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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 January 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2002.
- 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.