Method and apparatus for controlling the shuttle of a storage and retrieval machine
CA 2028071 C · Owner: Sorensen, B. Chuck · Inventors: Sorensen, B. Chuck; Devroy, Craig A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shuttle control for a storage and retrieval machine has a supervisory control means mounted on the base of the storage and retrieval machine and shuttle control means mounted on the carriage of the storage and retrieval machine. The supervisory control means receives shuttle operating commands and information signals and provides operating instruction signals for the shuttle to the shuttle control means. The shuttle control means receives the operating instruction signals from the supervisory control means, produces operating information signals to the supervisory control means, and controls the operation of a shuttle motor drive. Circuit means having sliding contactors moving with the …
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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 19, 1990 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2012.
- 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.