Multiple tube to bung coupling
CA 2065254 C · Owner: Entegris, Inc. · Inventors: Rauworth, Barry Lee; Hennen, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coupling (10) connecting an a of tubes (17, 18, 19) to a barrel and a plurality of flow courses (24, 26, 38) in the barrel, the coupling having a head (11) with multiple flow passages (23, 25 27) and a, bung with multiple flow passages and interfitting with the head portion to form sealed annular flow passages (32, 36) concentric of center flow course (24) connecting selected passages in the head and bung regardless of the relative orientations of the bung and head when assembled, the circular interfitting portions having radial seals (48, 49) to isolate the flow passages; and a rotatable code ring (60) on the head to fit with a stationary code (61) ring on the bung, and a clamp ring (67) …
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 July 1, 1991 and granted May 6, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 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.