Patent ID: 6957556
Filing Date: 2005-10-25
Classification: E05B,Y10T

Abstract:
1. An axial-pin disk-tumbler lock device in combination with a key comprising: a lock body having a first end, a second end, a bore thru the entire length and coaxial with the longitudinal axis of the lock body, a flat face at said first end perpendicular to the longitudinal axis of the lock body, and a plurality of at least two recesses disposed in a circular formation about the longitudinal axis of the lock body extending from said flat face a finite depth toward said second end with the longitudinal axes thereof parallel to that of the lock body; a tumbler cylinder adapted to be coaxially rotatable about the longitudinal axis of and with respect to said lock body a partial turn while the correct key is inserted and having a flat distal surface so arranged to abut said flat face of the lock body, a front face on the end opposite that of the flat distal surface, and a plurality of at least two recesses disposed in a circular formation about the longitudinal axis of the tumbler cylinder extending from said flat distal surface a finite depth toward said front face with their longitudinal axes parallel to that of the tumbler cylinder, and the tumbler cylinder defining a first position wherein each of said plurality of recesses in the tumbler cylinder are individually in axial alignment with each of said plurality of recesses in the lock body; a plurality of at least two pairs of cylindrical members each consisting of a first member and a second member, wherein the first members are of varying lengths and each of the first members are axially disposed within each of said plurality of recesses in the tumbler cylinder and each of the second members are axially disposed within each of said plurality of recesses in the lock body; a spring behind each of said second members within each of the plurality of recesses in the lock body; a keyway within said tumbler cylinder extending from said front face a finite depth toward said flat distal surface, wherein the cross sectional shape of the keyway comprising a center hole coaxially within the tumbler cylinder and a plurality of radial-outwardly projecting slots individually connecting between said center hole with each of said plurality of recesses in the tumbler cylinder and physically so proportioned and arranged that it allows the key access into said plurality of recesses in the tumbler cylinder to cooperate with said plurality of pairs of cylindrical members while confining said cylindrical members to within their respective recesses while the key is removed; and an improved key member having a body portion with a substantially flat face so arranged to abut said front face of the tumbler cylinder when the key is fully inserted into said keyway and a key portion projecting outward from and perpendicular to said flat face, wherein the key portion having a cross section shape defining a center pillar part and a plurality of at least two blade parts radial-outwardly projecting therefrom and said blade parts are individually trimmed to predetermined heights above said flat face and are inserted through said slots in said keyway into said plurality of recesses in the tumbler cylinder to cooperate with said plurality of cylindrical members.