Locking device for a roll
CA 1283386 C · Owner: Benz, William Frederick · Inventors: Benz, William Frederick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retaining device for retaining a roll of material in a box. The roll has a hollow inner core and the box has side and end walls. The device includes a base and a projection extending outwardly from the base and able to extend into the hollow core of the roll to allow the roll to rotate along its longitudinal axis but to prevent the core from being pulled out of the box. The projection is positioned to engage against the inner surface of the hollow core. The base can be secured to an end wall of the box. The invention includes a system for placing the retaining device in position in the box.
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 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2008.
- 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.