Sleeve-shaped expansion dowel
CA 1235005 A · Owner: Hilti Aktiengesellschaft · Inventors: Mirsberger, Helmut; Popp, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dowel is formed of an axially elongated sleeve with tongues connected to it so that they can be pivoted outwardly so as to project from the outside surface of the sleeve. Each of the tongues has a radially inwardly directed projection in the retracted position with the projection having a dimension transverse to the axial direction of the sleeve greater than the sleeve thickness. To provide an anchoring effect the tongues can be, displaced outwardly from the sleeve by a displacement member movable through the bore formed by the sleeve. In the extended positions. the tongues interlock. Webs connected to the tongues provide articulated connections between the tongues and the sleeve. The …
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 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
- 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.