Hollow, resin mechanical part having a shaft integrally formed therewith and an injection molding method for producing the same
CA 2179043 C · Owner: Sato, Masahiko · Inventors: Sato, Masahiko; Kondo, Masaaki; Kubo, Kimihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a hollow, resin mechanical part having a shaft integrally formed therewith, comprising a hollow integral, functional segment-shaft structure comprising at least one functional resin segment, and a resin shaft coaxially, integrally formed with the functional segment where-, in the integral segment-shaft structure satisfies the relationships defined by the following formula 0.9 ? L(b)/L(a) ? 1, in which L (a) represents the entire length of the integral segment-shaft structure, and L(b) represents the length of the hollow. The mechanical part of the present invention has not only high dimensional precision and excellent material-recycling characteristics but also can be, produced …
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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 28, 1994 and granted July 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2016.
- 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.