Spindle nut/threaded spindle device
CA 2185772 C · Owner: Honeywell Technologies Sarl · Inventors: Heinen, Hartwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for converting the rotation of a spindle nut (14) into a force-related linear translation of a threaded spindle (16) at an electromotive valve actuator comprises grooves (28) within the spindle nut (14) into which clamping hooks (30) are inserted. The clamping hooks (30) overlap with their hook ends straining rings (32 32'), whereat one straining ring (32) abuts a collar (36) at the spindle nut (14) or abuts a stationary abutment (20) respectively, and the other straining ring (32') is biasing a spring (18) between itself and the stationary abutment (20) or the collar (36) respectively (Figure 2).
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 September 17, 1996 and granted September 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2018.
- 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.