Roll support spindle
CA 1263356 C · Owner: Horton, Stuart L. · Inventors: Horton, Stuart L.; Kann, Frederick P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ROLL SUPPORT SPINDLE", A roll support spindle comprising a hollow tubular axle having a number of apertures in the circumferential wall thereof filled by an annular elastomeric membrane. The interior of the axle is sealed by end plugs and and adapted to be pressurised by air injected through a valve causing the annular membrane extending between the end plugs to bulge outwardly through the apertures to centralize and lock a roll core on the spindle.
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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
- 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.