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US 7,954,862 B2Granted
Electromagnetic lock provided with a sliding bolt for a swinging-type door
AssigneeDigit
InventorJean-Michel Defert
Life of this patent
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Abstract
Electromagnetic lock includes a body, a retractable sliding bolt, and a movable plate structured and arranged to move the retractable sliding bolt and functioning as an armature of an electromagnet housed in the body. The movable plate is movable via two forces acting in the same direction and is structured and arranged to move the retractable sliding bolt to a protruding position. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
Claims28
An electromagnetic lock comprising:
- a body;
- a linearly movable retractable sliding bolt;
- an electromagnet core arranged in the body;
- and
- a movable plate arranged in the body and being structured and arranged to contact and support the retractable sliding bolt and to function as an armature of an electromagnet,
- wherein the movable plate is movable via two forces acting in the same direction and is structured and arranged to move the retractable sliding bolt linearly to a protruding position, and
- wherein one of:
- the movable plate moves the retractable sliding bolt to the protruding position;
- and
- the electromagnet core is arranged between a front side of the movable plate and a free end of the retractable sliding bolt.
7 more elements
An electromagnetic lock comprising:
- an electromagnetic core;
- a linearly movable retractable sliding bolt;
- an armature plate supporting the retractable sliding bolt;
- and
- springs biasing the armature plate towards the electromagnetic core,
- wherein, when the electromagnetic core is energized, the armature plate linearly moves and positions the retractable sliding bolt in a protruding position and maintains the electromagnetic lock in a locked position, and
- wherein, when the electromagnetic core is not energized, forces generated by the springs maintain the protruding position of the retractable sliding bolt.
4 more elements
An electromagnetic lock comprising:
- a body;
- an electromagnetic core arranged in the body;
- a bolt member comprising a protruding portion and being movable linearly to a protruding position;
- an armature plate arranged in the body;
- and
- springs arranged in the body and biasing the armature plate towards the electromagnetic core,
- wherein, when the electromagnetic core is energized, the electromagnetic lock is maintained in a locked position, and
- wherein, when the electromagnetic core is not energized, forces generated by the springs maintain the protruding position until the bolt member experiences a force tending to move the bolt member linearly into the body.
5 more elements
Dependencies are inferred from the claim text.