Hand tool with multiple locking blades controlled by a single locking mechanism and release
CA 2194720 A1 · Owner: Buck Knives, Inc. · Inventors: Morton, Randolph J.; Helton, Roy L. Jr.; Rubin, Gregory F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand tool such as a knife (80) or a combination tool (20) includes multiple blades (32), each independently rotatable on a common axle (34) between a closed position within a handle (28) of the tool (80 20) and an open, position extending from the handle (28). Each blade (32) is positively but releasably locked into its open position. Those blades (32) which remain closed are biased toward the closed position when the opened blade is locked into position and also as it is opened and closed. A single locking releasing, and biasing mechanism serves all of the blades (32) in one handle (28).
Read the whole patent
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 January 9, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2019.
- 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.