Vibration dampener for coil tension window balance spring
AssigneeCaldwell Manufacturing Company
InventorsJohn R. Yonovich, William P. Newton, Brian S. Dense
Life of this patent
Estimating the term…
Abstract
Molded resin vibration dampener is mounted on coiled tension window balance springs arranged within spring covers. A resin wall 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 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.
Claims14
A vibration dampener for a coiled tension window balance spring within a spring cover, said vibration dampener comprising:
- a. a resin body having a wall shaped for fitting around said coiled tension spring;
- b. said wall having a slot oriented longitudinally of said spring when said body is mounted on said spring;
- c. said wall being flexible enough to allow said slot to spread open so that said body can be pressed onto a mid region of said spring;
- d. resilient fins extending obliquely outward from said body;
- and
- e. when said body is mounted on said spring, said fins extending far enough from said body to flexibly engage an interior surface of said spring cover and thereby hold said body and said spring spaced away from said interior surface of said spring cover to prevent rattling of said spring within said cover.
Dependencies are inferred from the claim text.