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:
Dec. 12, 1989
Filed:
Sep. 26, 1988
Norman R Westfall, Rochester, NY (US);
James A Martini, Rochester, NY (US);
John I Habbersett, Rochester, NY (US);
Caldwell Manufacturing Company, Rochester, NY (US);
Abstract
A lock shoe system for a take-out window having take-out jamb liners (10) uses a pair of fins (22) extending laterally outward from opposite sides (18) of a sash pin slot (16) in the jamb liner for supporting lock shoes (30) that move vertically in lock shoe channels (13 and 14) within the jamb liners. The lock shoes have pivotally mounted ramp latches (60) that extend over locking devices and are inclined toward recesses (82) for receiving sash pins (25). When a sash (20) is returned to an operating position between jamb liners (10), its sash pins (250 are moved downward over ramp latches (60), pivoting these aside and releasing the lock mechanism, which snaps the pins into the receiving recesses. This produces an audible sound as each pin is latched in its respective shoe (30) so that the user can tell from the sounds made when the latching occurs that sash (20) is properly latched into each shoe, where its weight is counterbalanced.