Electrically actuated lock mechanism

A locking mechanism for entrapping a lock bar comprising:

• a support frame;
• a lock member pivotally attached to said support frame, said lock member having a first arm with a lock dog;
• a latch member pivotally attached to said support frame and pivotally displaceable between an open and a locked position, said latch member having a dog catch at one end engaging said lock dog to lock said latch member in said locked position and a catch slot at the other end receiving said lock bar in said open position and entrapping said lock bar in said locked position, said latch member further having a planar top surface;
• resilient means for producing a first force biasing said latch member to said open position and a second force biasing said lock member to engage said lock dog with said dog catch;
• means for pivotally displacing said lock member against said second force to disengage said lock dog from said dog catch;
• a housing attached to said support frame;
• a cam gear comprising a cam surface having a predetermined contour, said cam gear being rotatably disposed in said housing;
• an electric motor for unidirectionally rotating said cam gear;
• at least one stud protruding from said cam gear, said at least one stud engaging said latch member intermediate said one end and said other end as said cam gear rotates to displace said latch member to its locked position;
• and
• a cam actuated switch responsive to the displacement of said latch member from its open position towards its closed position by the engagement of said lock bar with said latch member for providing electrical power to said electric motor and responsive to the contour of said cam surface for terminating said electrical power to said electric motor after said at least one stud has displaced said latch member to its locked position.