Electro-mechanical lock with rotary bolt

An electro-mechanical rotary lock, comprising:

• a housing, a bolt plate and a cover associated with said housing, said housing having a first opening, said bolt plate engaging said first opening and providing a bolt passage;
• a spring biased rotary bolt which is rotatable between a protracted and a retracted position relative said bolt plate, said rotary bolt being generally D-shaped and having a first and a second end;
• said first end normally protrudes through said bolt passage and has a cam surface, and said second end has a rotation limit stop having an associated over-hanging retainer lip;
• a locking means for normally restricting rotation of said rotary bolt;
• said locking means comprising a post normally positioned to engage said limit stop and block rotation of said rotary bolt, said post having a retainer flange whereby when said post engages said limit stop, said post flange is retained by said retainer lip;
• an electronic combination entry device for manual entry of a coded sequence and an associated electrically operated means for producing a code responsive signal to disengage said locking means;
• said electrically operated means comprising a solenoid having a body and an armature portion normally biased outwardly of said body, and a circuit board for generating a code responsive signal upon entry of said coded sequence which retracts said armature;
• said circuit board is internal to said housing, and said armature provides said post;
• and
• an entry preclusion means for restricting rotation of said rotary bolt in response to unauthorized forcing of said rotary bolt, wherein:
• said entry preclusion means comprises a safety notch, an engaging surface, a leaf spring and an elongated bore, said safety notch being integral to the periphery of said rotary bolt between said first end and said second end and disposed relative to be engaged by said engaging surface, said bolt plate providing said engaging surface, said elongated bore extending through the center of said rotary bolt and enabling said rotary bolt to shift laterally between a normally operable position and a secured position with said leaf spring normally biasing said rotary bolt into said operable position, said rotary bolt further having a recessed slot and said leaf spring engaging said recessed slot such that a portion of said leaf spring protrudes into said elongated bore;
• whereby when unauthorized force is applied to said first end, said rotary bolt is urged to laterally shift against its bias into said secured position wherein said engaging surface engages said safety notch, further precluding rotation of said rotary bolt out of said protracted position.

An electro-mechanical rotary lock having:

• a milled housing, said housing having a first machined level, a second machined level, a third machined level, a square first opening with a first and a second edge and a plurality of second openings, said first machined level having an arcuate first recess with a first and second end, and a circular bore, said second machined level having a generally rectangular second recess with opposed flange portions, and a plurality of mounting screw holes, said third machined level also having a plurality of mounting screw holes, said first and second edges having internally angled wall portions;
• a generally D-shaped rotary bolt, having a center orifice and an off-center orifice;
• a generally rectangular bolt plate sized to communicate with said first opening, having first and second sides with externally angled wall portions, and a bolt channel;
• a cylindrical solenoid, having a body and an armature portion, said body having a circumferential groove;
• a top plate, having a protruding edge, a corresponding bore and a plurality of mounting holes;
• a coiled spring, having a loop end and a flat end;
• a pivot pin, sized to communicate with said circular bore, said center orifice and said corresponding bore;
• a spring pin, having a knob end and sized to communicate with said off-center orifice;
• a plurality of electrical connectors, each of said connectors being engagable by a respective one of said second openings;
• a circuit board which attaches to said second machined surface, said circuit board being attachable to said solenoid by known electrical means, and to said electrical connectors by known electrical means;
• and
• a top cover which attaches to said third machined surface of said housing, enclosing said housing.

An electro-mechanical rotary lock, comprising:

• a housing, a bolt plate and a cover associated with said housing, said housing having a first opening, said bolt plate engaging said first opening and providing a bolt passage;
• a spring biased rotary bolt which is rotatable between a protracted and a retracted position relative said bolt plate, said rotary bolt being generally D-shaped and having a first and a second end;
• a locking means for normally restricting rotation of said rotary bolt;
• an electronic combination entry device for manual entry of a coded sequence and an associated electrically operated means for producing a code responsive signal to disengage said locking means;
• and
• an entry preclusion means for restricting rotation of said rotary bolt in response to unauthorized forcing of said rotary bolt, wherein:
• said entry preclusion means comprises a safety notch, an engaging surface, a spring and an elongated bore, said safety notch being integral to the periphery of said rotary bolt between said first end and said second end and disposed relative to be engaged by said engaging surface, said bolt plate providing said engaging surface, said elongated bore extending through the center of said rotary bolt and enabling said rotary bolt to shift laterally between a normally operable position and a secured position with said spring normally biasing said rotary bolt into said operable position;
• whereby when unauthorized force is applied to said first end, said rotary bolt is urged to laterally shift against its bias into said secured position wherein said engaging surface engages said safety notch, further precluding rotation of said rotary bolt out of said protracted position.

An electro-mechanical rotary lock, comprising:

• a housing, a bolt plate and a cover associated with said housing, said housing having a first opening, said bolt plate engaging said first opening and providing a bolt passage;
• a spring biased rotary bolt which is rotatable between a protracted and a retracted position relative said bolt plate, said rotary bolt being generally D-shaped and having a first and a second end;
• said first end normally protrudes through said bolt passage and has a cam surface;
• a locking means for normally restricting rotation of said rotary bolt;
• an electronic combination entry device for manual entry of a coded sequence and an associated electrically operated means for producing a code responsive signal to disengage said locking means;
• and
• an entry preclusion means for restricting rotation of said rotary bolt in response to unauthorized forcing of said rotary bolt, wherein:
• said entry preclusion means comprises a safety notch, an engaging surface, and an elongated bore, said safety notch being integral to the periphery of said rotary bolt between said first end and said second end and disposed relative to be engaged by said engaging surface, said bolt plate providing said engaging surface, said elongated bore extending through the center of said rotary bolt and enabling said rotary bolt to shift laterally between a normally operable position and a secured position whereby when unauthorized force is applied to said first end, said rotary bolt is urged to laterally shift against its bias into said secured position wherein said engaging surface engages said safety notch, further precluding rotation of said rotary bolt out of said protracted position.

An electro-mechanical rotary lock, comprising:

• a housing, a bolt plate and a cover associated with said housing, said housing having a first opening, said bolt plate engaging said first opening and providing a bolt passage;
• a spring biased rotary bolt which is rotatable between a protracted and a retracted position relative said bolt plate, said rotary bolt being generally D-shaped and having a first and a second end;
• a locking means for normally restricting rotation of said rotary bolt;
• an electronic combination entry device for manual entry of a coded sequence and an associated electrically operated means for producing a code responsive signal to disengage said locking means;
• and
• an entry preclusion means for restricting rotation of said rotary bolt in response to unauthorized forcing of said rotary bolt, said entry preclusion means including means for mounting said rotary bolt for lateral shifting movement to a non-rotatable secured position on said unauthorized forcing of said rotary bolt.

An electro-mechanical rotary lock comprising:

• a housing having an opening providing a bolt passage;
• a spring-biased rotary bolt which is rotatable between a protracted and a retracted position relative said bolt passage, said rotary bolt extending outwardly relative said housing when in said protracted position;
• a locking means for normally restricting rotation of said rotary bolt;
• an electronic combination entry device for manual entry for a coded sequence and an associated electrically-operated means for producing a code responsive signal to disengage said locking means;
• and
• an entry preclusion means for restricting rotation of said rotary bolt in response to unauthorized forcing of said rotary bolt.