Flat key with circuit chip
March 8, 2013. 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 312545 2653492 Metal magnetic key Key bow cover Programmable electronic-mechanical reversing flat key interactively communicatable with data processing means Switch lock installation Apparatus having a mechanical key and a transmitter for actuation of a lock system Key device incorporating an electronic circuit Contact device for transmitting electrical signals between a lock and key in a cylinder lock Key identification cover InventorAssigneeApplicationNo. 027688 filed on 03/08/1993US Classes:70/408, Bow or head70/278.3, Key rotated (e.g., Eurocylinder)70/460, Key identification235/492, Conductive340/5.64, Wireless transmitter340/5.65, Electronic coded record340/5.67Mechanical coded recordExaminersPrimary: Gall, Lloyd A.Attorney, Agent or FirmForeign Patent References
International ClassE05B 019/04Foreign Application Priority Data1992-03-06 DEAbstractA flat key for or a lock which is coded mechanically as well as electronically, includes a flat basic shaped part (11) consisting of metal, with a shank section (9) and a bow section (13). A circuit chip (23), fitted with structural parts (25) of an electronic circuit, is in a recess (21) in the bow section, formed by an integral bottom (19) of the basic shaped part (11) and sealed by a casting compound (29). Housing shells (15, 17) surrounding the bow section (13) are on facing flat sides of the bow section (13). The housing shell (15) lying over the recess (21) is bonded to the bow section (13). The other housing shell (17) bears a U-shaped rib (43) by which it engages behind the bonded housing shell (15). | |
