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
ApplicationNo. 027688 filed on 03/08/1993
US 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 record
ExaminersPrimary: Gall, Lloyd A.
Attorney, Agent or Firm
Foreign Patent References
International ClassE05B 019/04
Foreign Application Priority Data1992-03-06 DE
AbstractA 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).