Insulation cutting machine
CA 1267356 C · Owner: O'Shea, Ralph E. · Inventors: O'Shea, Ralph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Conventionally, insulation for the inside of duct work and the like is cut by hand to the desired width and length which is time consuming and labour intensive. The present invention includes a frame within which a roll of insulation is mounted for free rotation. A first pair of power driven rollers extend across the frame and pull the length of insulation from the roll. Adjustable cutters for longitudinally slitting of the insulation are mounted above a second driven roller and a third set of power driven rollers is mounted cross the frame behind the slitting cutters. A manually operated transverse cutter wheel is used to cut off the length of insulation between the first set of power …
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 April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
- 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.