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:
Jun. 20, 1978
Filed:
Dec. 23, 1976
Harold L Stavenau, Owatonna, MN (US);
Truth Incorporated, Owatonna, MN (US);
Abstract
A window lock and, more particularly, a check rail lock which can be mounted in association with a double hung window having a center vertical muntin. The window lock has a casing housing a linearly movable locking unit with locking members having a locking notch at one end for engagement with catch means carried by the adjacent window sash, an operating unit with operating members movably mounted in the casing and movable between window unlocked and locked positions and with pin and slot structure interconnecting the locking members and the operating members with the casing whereby the locking members are guided in the linear movement thereof to an advanced position as the operating unit moves toward the locked position and the locking members are then raised into engagement with the catch means and withdrawn to tightly draw and lock the window sash together as the operating unit moves to the final locked position.