Shutter, grille or the like
Patent 4033073 Issued on July 5, 1977. Estimated Expiration Date: 
July 5, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 5, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 702094 1029814 3153819 InventorApplicationNo. 05/647660 filed on 01/09/1976US Classes:49/38, REGISTERABLE OPENING IN FACIALLY OPPOSED CLOSURE AND BARRIER160/197, Strips, slats, or panels slidably interconnected160/222Slidably interconnectedExaminersPrimary: Caun, Peter M.Attorney, Agent or FirmAbstractA movable member of a grille or shutter is slidable with respect to a stationary member through tongue and groove or other slidable connections, between a fully open and a fully closed position. Both the movable member and the stationary member are provided with corresponding cross bars which are spaced both vertically and equally. Facing upright rails, such as at the center, of the movable member and fixed member are provided with opposed grooves, each for reception of a vertically placed bar magnet. The magnets are placed with their opposite poles facing each other, so that the magnets will attract, rather than repel. Preferably, the closed position of the movable member is the upper position, and the magnets are directly opposite each other in this position.Field of SearchStrips, slats, or panels slidably interconnectedStrips, slats, or panels slidably interconnected With independently movably strip, slat, or panel Strips, slats, or panels slidably interconnected Slidably mounted unit Slidably interconnected Plural individually interconnected strips, slats, or panels With relative slidable motion preventing means Tongue, bead, bolt, or dog into groove or slot | |
