Disposable syringe
CA 1293661 C · Owner: Rossmark, Rene T.M. · Inventors: Rossmark, Rene T.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable syringe for medicinal or similar purposes of the type, which may be used once only. The piston rod is coupled to the piston through a lost-motion connection. The piston and the piston rod are initially positioned one relative to the other such that they are - as, seen in the moving out direction - rigidly coupled. In the end portion of the cylinder turned away from the injection needle means are provided adapted to lock the piston and the piston rod in said rigid coupling position along a part of the suction stroke length corresponding to the length of said cylinder end portion, such that upon initiating the injection stroke a certain lost motion of the piston rod relative to …
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
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- 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.