Anti-theft steering shaft lock

In a steering column having a support and a steering shaft rotatably mounted on said support,

• an anti-theft steering shaft lock comprising:
• a first clutch element rigidly connected to said steering shaft having a notch means accessible in the direction of a longitudinal centerline of said steering shaft,
• a second clutch element having an axial lug means thereon,
• means mounting said second clutch element on said support for bodily shiftable movement in the direction of said centerline of said steering shaft between a locked position wherein said axial lug means engages said notch means to prevent relative rotation between said first and said second clutch elements and an unlocked position wherein said axial lug means is remote from said notch means,
• an anti-rotation means between said support and said second clutch element operative to prevent rotation of said second clutch element relative to said support,
• an annular control element mounted on said support for rotation between a first position corresponding to said unlocked position of said second clutch element and a second position corresponding to said locked position of said second clutch element,
• a cam means between said control element and said second clutch element operative to move said second clutch element between said unlocked and said locked positions thereof concurrently with rotation of said control element between said first and said second positions thereof, and
• an actuating system on said support operative to rotate said control element between said first and said second positions thereof.