The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1978
Filed:
Aug. 26, 1976
Edward H Wood, Sanford, NC (US);
Jim Walter Corporation, Tampa, FL (US);
Abstract
This invention relates to a balance spring lock for tilt out windows in which the balance spring is positioned in the jamb channel and connected through a sash cord to a block member and to the frame. The sash cord is directed over a sheave and either through an aperture in the block or guided along the surface of the block to be clamped against the block or within the block upon rotation of a shaft member therein coupled through a pin to the sash. The clamping action takes place through an eccentric surface on the shaft member through a cam follower operated by the shaft member, or through a pivoted lever attached to the shaft member. All variations of the clamping action operate with rotation of the shaft member caused by tilt of the window.