Tube connecting device
CA 2109529 C · Owner: Chen, Waterson · Inventors: Chen, Waterson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tube connecting device includes a first tubular connector and a second tubular connector which extends into the first connector and which is formed with an annular peripheral groove that is registered with a pair of radial openings in the first connector. Each of a pair of press arms has one end mounted pivotally to the first connector adjacent to a respective one of the radial openings and formed with a cam face. Each of the press arms is pivotable to a locking position in which the cam face thereof extends into the peripheral groove via the respective radial opening so as to press against the second connector. Each of a pair of retaining units includes a positioning rod which is …
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 November 19, 1993 and granted May 6, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 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.