Sealing assembly in a heat pipe roller
CA 2361694 A1 · Owner: Hyllberg, Bruce E. · Inventors: Hyllberg, Bruce E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roller (10) incorporating a heat pipe cavity (12) has a port (25) through which a medium (29) is flowed and a vacuum is drawn. The port (25) is sealed by a plug (20) which is lodged in a hole (14) by advance of a screw (16) against the plug (20) to form a metal-to-metal seal that will withstand pressures in the heat pipe cavity (12). A body of grease (21) is one of several ways disclosed for centering the plug (20) in the hole (14). The screw (20) can be advanced with a conventional Allen wrench or a special tool (35) having a driver head (22) on a shaft (23) that extends through a casing (24) for conveying medium or drawing a vacuum. The screw (16) has vents (28) to allow a …
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 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2022.
- 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.