Apparatus for storing a concrete feeding hose in a rock bolting device
CA 1253704 A · Owner: Oy Tampella Ab · Inventors: Leppanen, Jarmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for storing a concrete feeding hose in a rock bolting device, comprising a reel for a hose which reel is mounted rotatably on a supporter and that, end of the hose which is attached to the reel is connected to concrete feeding means. In order that the coiling device could be used for passing the hose into a drill hole and for drawing it out of the hole the, reel is surrounded by a ring-shaped supporting wall against which the hose is positioned when the reel is rotated in the decoiling direction. An unrotative guiding means is provided beside the supporting wall so as to guide the hose out of the reel by the action of an axial expulsive force exerted on the hose due to the rotary …
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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 May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 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.