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. 29, 1989
Filed:
Nov. 10, 1988
Applicant:
Inventor:
Robert F Lense, Rockford, IL (US);
Assignee:
Amerock Corporation, Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F / ; E05F / ;
U.S. Cl.
CPC ...
49279 ; 49341 ; 49394 ;
Abstract
A shaft of a window actuator is operable to open and close a casement window sash when the shaft is rotated either by a hand crank or by a motor from inside of the premises. The shaft is automatically locked against rotation if a backdriving force is applied to the actuator from outside the premises. This prevents an open sash from being buffeted by wind and from being pulled open further by a potential intruder.