Patent ID: 8261586

Claim:
A lock comprising: a housing having an opening for receiving a locking bolt, the locking bolt including a receiving groove thereon and being movable between a locked position and an unlocked position; a rotary actuator positioned within the housing, the rotary actuator including a rotary shaft operably coupled thereto, the rotary actuator energizable between a locked condition for maintaining the locking bolt in the locked position and an unlocked condition that allows the locking bolt to move to the unlocked position; a rotary blocking device operably coupled to the rotary shaft, said rotary blocking device including cam engagement means and a tab member co-axially operably attached to the cam engagement means, said tab member including a first portion engageable with said receiving groove and a second portion that is non-engageable with the receiving groove, wherein upon actuation, the rotary actuator alone causes the tab member to rotate by an angle greater than 90 degrees and less than 180 degrees between a locked position in which the first portion engages the receiving groove and an unlocked position in which the non-engageable second portion allows the locking bolt receiving groove to bypass the tab member, and a compression spring positioned between the rotary actuator and the cam engagement means for biasing the rotary blocking device in the locked position.