Disk tumbler lock and key, improved means and methods of manufacturing for

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 flat proximal surface on the end opposite that of the flat distal surface, a plurality of at least two recesses disposed in a circular formation about the longitudinal axis of the tumbler cylinder and extending through the entire length of and with their longitudinal axes parallel to that of the tumbler cylinder, and a center recess of substantially circular cross section extending from said flat proximal surface a finite depth toward said flat distal surface and physically proportioned such that its outer periphery breaks into said plurality of recesses in the tumbler cylinder forming rectangular windows each connecting between the center recess and each of said plurality of recesses, 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 substantially thin face plate having a front face, a rear surface, and an outer diameter similar to that of the tumbler cylinder, wherein the rear surface is made to abut said flat proximal surface of the tumbler cylinder and said face plate mechanically fastened to the tumbler cylinder for operation in unison therewith;
• a keyway through the entire thickness and coaxial with the longitudinal axis of the face plate wherein the cross sectional shape of the keyway comprising a center hole coaxially within the face plate and a plurality of radial-outwardly projecting slots physically so proportioned and arranged that it allows the key member to be inserted through the keyway to access 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 said face plate 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.