Positioning device adapted for use with operating tables

A device in combination with an object and a base for positioning said object relative to said base comprising:

• first, second, third, and fourth arms,
• an L-shaped arm connecting said third arm and said fourth arm,
• said first and third arms having first and second opposite ends, each said end of said respective first and third arms having holding members movable between a locked position and unlocked position, said first and third arms each further including movable actuating means for substantially simultaneously moving each of said holding members of said respective first and third arms between said locked and unlocked positions in response to movement of said respective actuating means between an actuated position and a deactuated position,
• a first connecting means releasably and rotatably engaged with said second arm by said holding member of said second end of said first arm, said first connecting means being slidable with respect to said second arm,
• a second connecting means releasably and rotatably engaged with said second arm at an end thereof opposite said first arm by said holding member of said first end of said third arm, said third arm being slidable with respect to said second arm,
• a third connecting means releasably and rotatably engaged with a first end of said L-shaped arm by said holding member at said second end of said third arm,
• a fourth connecting means releasably and rotatably engaged with a second end of said L-shaped arm by a clamp disposed at a first end of said fourth arm,
• said fourth arm including a connection to a positioning member adjacent a second end of said fourth arm, said connection being able to lock said positioning member in a desired position.