Bi-functional transfer foot
CA 2058316 C · Owner: United Technologies Corporation · Inventors: Trudeau, Allen Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bi-functional transfer foot that is, structurally configured and operative to provide automated handling of preimpregnated composite materials. The transfer foot includes a valve member having a knock-off stem movably mounted in a housing, a solenoid valve and fluid fine interconnection to vacuum and pressure sources and, a control subsystem for regulating the operation of the transfer foot. The transfer foot is bi-functional for "ON" and "OFF" operation. A control signal issued by the control subsystem turns the transfer foot "ON" wherein vacuum forces causes a first displacement of the valve member within the housing to provide a vacuum force for engaging and retaining the tacky surface …
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 December 23, 1991 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2013.
- 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.