High-force linear motor assembly using tandem axes
CA 2101407 C · Owner: Jerzycke, Charles Lee · Inventors: Sommerhalter, Frederick A. Jr.; Ogletree, Richard; Jerzycke, Charles Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A linear motor assembly having enhanced mechanical stiffness, comprising: (a) at least one pair of rigidly interconnected tandem rails defining a first axis of movement and spaced apart normal to such first axis; (b) at least one pair of frames movable along said pair of rails, each frame presenting at least one pair of opposed parallel bearing surfaces; (c) at least one linear motor effective to operate between each rail and frame; (d) bearings supported between each rail and each bearing surface of each frame, said bearings being preloaded with an interference load while permitting bearing movement; and (e) support structure between said frames defining axes of movement actuated by other …
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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 July 27, 1993 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2015.
- 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.