A combination of devices which enables the determination of key bitting depths by both measurement and by cylinder manufacturers' depth codes
CA 2344566 A1 · Owner: Smith, Donald Joseph · Inventors: Smith, Donald Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates primarily to the field of Locksmithing wherein , key bittings are cut, to specific depths so that they will operate only those locks for which they are intended. It is, often necessary to decode a key to ascertain the depths of its bittings. The customary means of, decoding employ:, 1. A flat metal gauge precut with gaps representing the lock manufacturer's specified, depths. 2. A micrometer, the measurements from which being referred to a manufacturer's depth, conversion table. 3. A propriety device such as HPC's "Pocket Size Decoder Kit" which indicates , depths by, manufacturer's code. There is a clear need within the Locksmithing industry for 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
- Filed April 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2023.
- 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
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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.