Vibration dampener for coil tension window balance spring
CA 1263565 C · Owner: Dense, Brian S. · Inventors: Newton, William P.; Dense, Brian S.; Yonovich, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Molded resin vibration dampener 10 is mounted on coiled tension window balance springs 15 arranged within spring covers. A resin wall 13 of the vibration dampener, shaped for fitting around the tension spring has a, slot oriented longitudinally of the spring and the wall, is flexible enough to allow the slot to be spread open so that the body can be pressed onto a mid-region of the spring. Resilient fins 12 extend obliquely outward from the body far enough to engage an interior surface of the spring cover and thereby hold the body and the spring spaced away from the spring cover to prevent rattling of the spring within the cover.
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 December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
- 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.