Float switch assembly
CA 2060748 C · Owner: S. J. Electro Systems, Inc. · Inventors: Utke, Gene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetically actuated float switch assembly for use with a submersible pump, comprising a float rod with two spaced stops a movable float, carried by the rod which moves between the stops in response to fluid level means, for mounting the rod in a vertical oriented position for movement upwardly and downwardly in response to float movement against the two spaced stops a, magnetic body carried at the upper end of the rod for movement therewith a, generally U-shaped magnetic follower element with two spaced magnetically, responsive arms on one side of the magnetic body or two sets of arms disposed, on either side of the magnetic body to provide a dual U-shaped armature arrangement, means …
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 February 5, 1992 and granted October 7, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2014.
- 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.