Swivel or rotating joint
CA 2007622 C · Owner: Seabrook, Colin · Inventors: Seabrook, Colin; Makin, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A swivel joint for interconnecting tow lengths of pipe, comprises an inner annular member adapted in, use, to be connected to a first length of pipe and an outer annular member co-axial with the inner annular member and adapted, in use, to be connected to a second length of pipe, bearing means, locating the inner and outer member for relative rotary movement with respect to one another. A lubricant reservoir is connected to the bearing means and pump means driven by relative, rotary movement between the inner and outer annular members pumps lubricant from the lubricant reservoir to the bearing means . The, lubricant reservoir comprises a collapsible hose and the pump means comprises for …
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 January 11, 1990 and granted May 31, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2012.
- 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.