Method and apparatus for determining the position of a mobile body
CA 2006107 C · Owner: Simonelli, Francesco · Inventors: Cecchi, Stefano; Simonelli, Francesco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for determining the position of a mobile body which is movable along a rectilinear path relative to a fixed reference body is which the position of the mobile body is independent of any spurious movements of the body or variations in the intensity of the source of radiation. In the preferred embodiment of the apparatus an optical, sensor includes a source of optical radiation integral with the mobile body and the intensity of which varies continuously in the direction of movement of the mobile body two optical receivers, integral with the fixed reference body and side-by-side in the direction of movement of the mobile body and directly facing the source of optical …
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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 December 20, 1989 and granted June 8, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2011.
- 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
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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.