Plastic spring assembly
CA 2130581 A1 · Owner: Afa Products, Inc. · Inventors: Maas, Wilhelmus J. J.; Hurkmans, Petrus L. W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The trigger operated pumping mechanism (49) comprises a body (14), a cylinder (48) in the body of a dispensing device (10); a piston (42) received in the cylinder (48); a trigger (32) movably mounted to the body (14) and having a front side and back side (415), and being coupled to piston (42); and a non-metal biasing mechanism (40) for biasing the trigger (32) away from the body (14) to bias the piston (42) coupled to the trigger (32) out of the cylinder (48), the biasing mechanism (40) including a non-coiled, elongate, generally flat spring, mechanism (40,640) having opposite ends (410 or 642; 414 or 644) and being positioned between the body (14) and the trigger (32).
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 February 23, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 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.