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US 2003/0164012 A1Published application
Lock-key system
AssigneeIkon Aktiengesellschaft Präzisionstechnik
InventorJurgen Kruhn
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AssigneeIkon Aktiengesellschaft Präzisionstechnik
InventorJurgen Kruhn
Estimating the term…
The invention relates to a lock-key system comprising a flat key (1), which is insertable into the keyway of a cylinder core (3), wherein grooves (4) and ribs (5) inside the keyway are assigned to corresponding ribs (5a) and grooves (4a) located on both flat sides of the key (1), wherein the key is subdivided from the key spine (6) to the key facing into different profile sections. The middle profile section is assigned to at least one groove (4) on one outer surface of the keyway (2) and to a rib (5) on the opposite outer surface of the keyway. Both the groove (4) as well as the rib (5) comprise a flank (4′, 5′), which extends perpendicular or substantially perpendicular to the center plane of the key or of the keyway, and comprise a flank (4″, 5″), which extends slantingly to this center plane. The perpendicular or substantially perpendicular flank of the groove faces the opposite slanted flank of the rib, and the perpendicular or substantially perpendicular flank of the rib faces the opposite slanted flank of the groove.
Key-lock system, comprising a flat key (1) which is insertable in the keyway (2) of a cylinder core (3), wherein grooves (4) and ribs (5) inside the keyway (2) are assigned to ribs (5a) and grooves (4a) on both flat sides of the key, wherein the key is subdivided into different profile sections from the key spine (6) to the key facing (7), with the section near the key spine (6) configured as guide section (8) and with the section near the key facing (7) at least partially receiving the notches for the associated tumblers, characterized in
Key-lock system according to one of the preceding claims, characterized in that the keyway (2) tapers in direction of the slanted flanks (4″ and 5″, respectively).
Key-lock system according to one of the preceding claims, characterized in that the middle profile section (9) is subdivided in several profile sections, and all these profile sections are demarcated—as viewed from the key facing to the key spine—by slanted flanks and, as viewed from the key spine to the key facing, by perpendicular or substantially perpendicular flanks.
Dependencies are inferred from the claim text.