C. Ed. Schulte Gesellschaft MIT Beschraenkter Haftung Zylinderschlossfabrik

C. Ed. Schulte Gesellschaft MIT Beschrankter Haftung Zylinderschlossfabrik

C. Ed. Schulte Gesellschaft MIT Beschränkter Haftung Zylinderschloßfabrik

Theo Piotrowski

Michael Reine

Thomas Wallberg

A method for profiling broad sides of a flat reversible key. A key blank is clamped to expose the first broad side of the key blank and complementary grooves and ribs are milled using a milling cutter with cutter teeth by advance in the longitudinal direction of the key relative to the longitudinal section profile of the cutter teeth. The key blank is then clamped in a position turned by 180&#xb0; about the longitudinal center axis of the key so that the second broad side of the blank is exposed, and complementary grooves and ribs are milled into the broad side with milling cutter, by advance in the longitudinal direction of the key. The cutter shaft axes is inclined at an angle of inclination (&#x3c6;) relative to the longitudinal center plane of the key, at least one cutter tooth rib of the cutter teeth producing an undercut guide wall.

Method for profiling a flat reversible key, and flat reversible key, based on a flat reversible key profile, which is produced according to the method

A locking arrangement with a lock cylinder and matching key. The key has a flat key bit with a narrow spine, two broad sides, and coding notches at coding positions on the key bit. The cylinder has a housing, core, tumblers, and a sensing member located in a supplementary core hole. Spacing from the spine of the sensing point is greater than spacing from the spine of the apex of the notch is cut the deepest. The sensing point is near a peripheral edge of a notch cut less such that deepening the notch to a depth of the notch cut the deepest leads to disappearance of the sensing point. For protection against unlocking, the supplementary core hole is located between adjacent core holes and the sensing member has a tip which the sensing point on a broad side of the key situated between adjacent coding positions is sensed.

Locking arrangement comprising a lock cylinder and a matching key

A locking device which has a lock cylinder and a matching key. The key has a key bit with at least one coding notch and a blocking rib with at least one indentation. The lock cylinder has a housing with a bearing bore and a cylinder core that is mounted in the bearing bore and a blocking member. The blocking member is engagable in a blocking recess of the bearing bore and prevents rotation of the cylinder core. A pivot lever is mounted in the cylinder core and has a bearing end about which the pivot lever pivots, and a sensing end which senses the blocking rib The pivot lever closes off a capturing opening for the housing pin when the blocking rib is the proper height and opens the capturing opening after a partial rotation of the cylinder core when the blocking rib is missing.

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Kerpen, Germany

Theo Piotrowski