Fastener for attaching objects to bones
CA 2186159 C · Owner: Del Rio, Eddy H. · Inventors: Anspach, William E. Iii; Reid, William S.; Anspach, William E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fastener adapted to expand into bone has a tubular body having a longitudinal opening therethrough with a stop within the opening. The body (10) has a head (10) at one end and a longitudinal slot (24) extends through the body near the other end to form ribs (12) that expand radially when the body is compressed. A puller (4) projects through the opening in the rivet (3) and has a head (20) that engages the other end to compress the rivet when the puller is pulled through the body. An annular recess (19) is formed in the puller near the head and the other end of the body is crimped into the recess to aid expansion of the ribs. The puller is weakened at a point (30) so that itwill break upon …
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
- Filed March 21, 1995 and granted June 8, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2017.
- 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.