Expansion plug
CA 1062517 A · Owner: Berner, Albert · Inventors: Runge, Erich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expansion plug formed in one-piece from plastic material is disclosed. The plug has a wedging sleeve forming the inner end and a collar forming the outer end with a central portion formed therebetween. An axial cavity extends through the collar and the central portion and an axial opening is provided in the wedging sleeve to receive a threaded fastening member. Diametrically opposed deformable webs extend longitudinally in the central portion and joins the wedging sleeve and the collar and are adapted to buckle outwardly upon movement of the wedging sleeve towards the collar as a result of rotation of the threaded fastening member. The deformable webs are defined by longitudinal slots in …
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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
- 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.