Patent ID: 6912881
Filing Date: 2005-07-05
Classification: E05B,Y10T

Abstract:
1. A security reversible-key with at least three coding pin rows (A 1 , A 2 , A 3 ) located on flat sides of the key (S), with an assigned cylinder (Z) with tumbler pin rows of pairs of tumbler pins, said tumbler pin pairs consisting of tumbler pins and counter pins at the positions of the coding pin rows of a given bore pattern, wherein: the key has a blocking groove (BN) in a coding pin row (A the blocking groove has a coded blocking depth (B wherein a total length (lb) of the blocking tumbler pin (BZ) and the blocking counter pin (BG) is almost equal to a distance (db) from the blocking groove (BN) to a cylinder housing ( so that the blocking counter pin impinges on the cylinder housing (