Limit switch assembly for mobile storage apparatus
CA 2017899 C · Owner: Dahnert, Dean L. · Inventors: Dahnert, Dean L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-, This invention pertains to movable storage systems wherein a series of storage units having shelves or bins are supported on wheeled carriages to provide for moving the units on tracks to create an access aisle between any two of the units and to establish the others in close side-by-side relationship to minimize the amount of floor space required for the units. There i.s a reversible electric motor mounted on each of the :storage units so the units can be driven in either direction along the tracks. In particular, the invention resides in a new limit switch assembly which is capable of governing the time at which acceleration anal deceleration of the units occurs as they are moved …
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 May 30, 1990 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 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.