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:
Aug. 03, 1993
Filed:
Oct. 01, 1992
Applicant:
Inventor:
Norman R Westfall, Rochester, NY (US);
Assignee:
Caldwell Manufacturing Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05F / ; E05D / ;
U.S. Cl.
CPC ...
49446 ; 49453 ; 16193 ;
Abstract
A lock shoe system for an especially heavy sash has shoes with lock bolts that can be moved into locking positions by means of a tool that moves a bolt from underneath a shoe so that the bolt interlocks with a lance in the jamb liner. Once the shoes are locked to the jambs, the sash can be lifted off the shoes, moved laterally within the jambs, and angled out of the window for removal. The shoes guide the sash to a centered position as it is returned to its platforms; and when the shoes are unlocked from the jambs, the lock bolts preferably retain the sash on the shoe platforms.