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. 03, 1981
Filed:
May. 31, 1979
Jeffory A Peterson, Canby, MN (US);
Eric W Nelson, Minneapolis, MN (US);
Truth Incorporated, Owatonna, MN (US);
Abstract
An operator for a casement-type window sash which is mounted adjacent one edge thereof on slider structure for combined pivoting and linear movement comprising, a first structure for causing said combined pivoting and linear movement including a first linkage having an operating arm and a connecting link which is pivotally connected to the operating arm intermediate the ends thereof and also pivotally connected to said sash and a constraining link pivotally connected to a window sill and to the sash at a distance from said edge. A member mounted at an end of the operating arm at a distance from said pivotal connection to the connecting link and movable in an arc as the operating arm moves between window open and closed positions and a channel member mounted on the sash to extend lengthwise thereof and at a location to confine and be engaged by said member when the sash is either closed or partially open or at any position therebetween function to assist in closing and opening of the sash and holding the sash in a partially open position.