Permanent magnet linear electromagnetic machine
CA 2007714 C · Owner: Vitale, Nicholas G. · Inventors: Vitale, Nicholas G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A linear reciprocating electromagnetic machine (10) has an outer stator member (12) having axially spaced apart pole pieces (22') and (24'), an open-slot coil cavity (18) housing a coil, and an inner stator member (14) spaced from the outer stator member (12) and providing means for completing a path for magnetic flux. The machine also includes a permanent magnet plunger (16) arranged for reciprocation with respect to the stator members and within the space between such stator members. The plunger (16) is provided with three permanent magnet segments (28), (30), and (32) arranged axially along the plunger (16) such that the interface zones between the magnet segments are substantially …
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 12, 1990 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 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.