System of non-reproducible locking key and cylinder for said key

A rotating cvlinder lock non-reproducible locking key comprising:

• a key blade,
• said key blade having a lock insertion and which enters a cylinder lock to allow said key to open and close said lock,
• an opening formed in said key blade adiacent said lock insertion end,
• said opening having an opening first end closer to said lock insertion end than an opening second end opposite said opening first end,
• said opening second end having an arcuate shape,
• a swinging member mounted on a shaft in said opening,
• said shaft is located closer to said opening first end than said opening second end,
• said shaft is mounted adjacent one end of said swinging member,
• said swinging member being mounted to pivot about a first axis and a second axis and said first axis extends perpendicular to said second axis;
• the other end of said swinging member has a rear projection, said key including a pair of spaced first and second lips which jut from an arched opening end wall into the opening, whereby pivot movement of rotation of the swinging member about said shaft is limited by said projection butting against respective said first and second lips.

A rotating cylinder lock non-reproducible locking key comprising:

• a key blade,
• said key blade having a lock insertion end which enters a cylinder lock to allow said key to open and close said lock,
• an opening formed in said key blade adjacent said lock insertion end,
• said opening having an opening first end closer to said lock insertion end than an opening second end opposite said opening first end,
• said opening second end having an arcuate shape,
• a swinging member mounted on a shaft in said opening,
• said shaft is located closer to said opening first end than said opening second end,
• said shaft is mounted adjacent one end of said swinging member,
• said swinging member being mounted to pivot about a first axis and a second axis and said first axis extends perpendicular to said second axis;
• said one end of said swinging member has a front end face in which there exists a first groove of approximately vertical semi-elliptical shape which extends substantially parallel to said shaft, said first groove faces a second semi-circular groove formed in said opening first end, and said first and second grooves receiving between them a cylindrical cotter pin having a radius equal to that of said second groove.

A rotating cylinder lock non-reproducible locking key comprising:

• a key blade,
• said key blade having a lock insertion end which enters a cylinder lock to allow said key to open and close said lock,
• an opening formed in said key blade adjacent said lock insertion end,
• said opening having an opening first end closer to said lock insertion end than an opening second end opposite said opening first end,
• said opening second end having an arcuate shape,
• a swinging member mounted on a shaft in said opening,
• said shaft is located closer to said opening first end than said opening second end,
• said shaft is mounted adjacent one end of said swinging member,
• said swinging member being mounted to pivot about a first axis and a second axis and said first axis extends perpendicular to said second axis;
• said opening is made in a reduced thickness of said key blade, said reduced thickness is defined between two equal first and second longitudinal grooves beginning from the insertion end of the key blade.

A rotating cylinder lock non-reproducible locking key comprising:

• a key blade,
• said key blade having a lock insertion end which enters a cylinder lock to allow said key to open and close said lock,
• an opening formed in said key blade adjacent said lock insertion end,
• said opening having an opening first end closer to said lock insertion end than an opening second end opposite said opening first end,
• said opening second end having an arcuate shape,
• a swinging member mounted on a shaft in said opening,
• said shaft is located closer to said opening first end than said opening second end,
• said shaft is mounted adjacent one end of said swinging member,
• said swinging member being mounted to pivot about a first axis and a second axis and said first axis extends perpendicular to said second axis;
• said shaft is a cylindrical shaft which is installed in an auxiliary orifice of a variable section of said swinging member, said auxiliary orifice is circular in its central section and widens ellipsoidally toward both outlets, said orifice keeping its diameter constant solely over the distance coincident with said second axis.

A system of a non-reproducible locking key and a rotatable cylinder lock for said key, said key having a flat key blade, said cylinder lock having a rotating cylinder rotatably mounted within a retaining body, said cylinder having an insertion channel adapted to accept said key blade and a plurality of radially disposed pins in circumferentially spaced relation to operate with said blade and counterpins that drive said pins and are capable of remaining precisely retracted in said retaining body when there is established a primary opening code, said key blade has side walls, a key blade plane parallel to said side walls, and a lock insertion end, the improvement comprising

• a window formed in said key blade adjacent said lock insertion end, said window passing through a thickness of said key blade, said window has an arcuate rear wall, a narrower front wall and lateral sidewalls diverging between said narrower front wall and said rear wall,
• a longitudinal swinging member mounted in said window, said swinging member has a first and second side wall, a top wall, a bottom wall, a front wall and a rear wall;
• a plane of said first side wall is transverse to the key blade plane, said swinging member is mounted to make two pivotal movements of limited amplitude, a first pivotal movement is a transverse pivot movement in a first plane that is perpendicular to said key blade plane, a second pivotal movement in a second plane that is parallel to said key blade plane, said first and second pivotal movements are produced about a swing member shaft, said shaft being in said key blade between said key blade side walls and having a shaft axis extending toward the top and bottom walls of said key blade and perpendicularly to a longitudinal axis of said key blade to provide a first swinging member pivotal axis coextensive with said shaft axis and a second swinging member pivotal axis perpendicular to said shaft axis;
• said cylinder has a fixed pin and a plurality of movable pins, said movable pin are driven by corresponding counterpins, which can be precisely retracted in said retaining body against corresponding springs, respectively when there is established said opening code,
• wherein when said key blade is properly inserted in said cylinder and, said opening codes being correct, said fixed pin exerts contact on one of said swinging member side wall to provide an angular rotation of said swinging member with respect to said second pivotal axis until said swinging member comes to have its opposite sidewall resting against a respective portion of the window;
• said movable pins contacting said one swinging member side wall and at least one of said top and bottom walls of said swinging member.