Transmission line spacer-damper device
CA 2122197 C · Owner: Ar Products, Llc · Inventors: Richardson, Albert S. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spacer damper for installation on twin triple, or quad bundled lines at various distances along the line to provide proper separation and effective vibration damping of the subconductors includes a structural hoop about which two or more clamps are positioned at equal intervals. The distance between the clamps is maintained by springs about the hoop and between the clamps that compress against each side of the clamp through a flat washer and a rubber washer. The clamps allow attachment of the spacer damper to the subconductors.
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 April 26, 1994 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2016.
- 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.