Nozzle assembly for a vacuum device
CA 1302669 C · Owner: Meland, Ronald F. · Inventors: Berfield, Robert C.; Meland, Ronald F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arrangement for attaching a rigid vacuum conduit to a nozzle provides high rotational freedom between the nozzle and the rigid conduit while retaining a reasonable degree of airtightness between the conduit and the nozzle. In one form of the invention, the rigid vacuum conduit includes a coupling section of generally cylindrical form adapted to be received into an inlet opening of the nozzle. The coupling section includes a plurality of spaced grooves, each circumscribing the coupling section. The presence of the grooves reduces the frictional loading between the vacuum conduit and the inlet opening while providing a trap for dirt particles that would otherwise jam the vacuum conduit …
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
- Granted June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.