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US 6,035,675 AGranted
Electromagnetically actuated lock
AssigneeDaimler-Benz Aktiengesellschaft
InventorsMarkus Zimmer, Rainer Uhler, Hans-Peter Schoner
Life of this patent
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Abstract
The apparatus is an electromagnetically actuated lock which has a movable part, which is prevented from rotation or displacement by a barring bolt that extends into a recess of the movable part. Locking pins extend into the barring bolt and which locking pins positively lock the bolt in the withdrawn or retracted position when access is authorized and which locking pins also positively lock the bolt in the extended position when access is unauthorized.
Claims6
An electromagnetically-actuated lock comprising:
- a rotatable and longitudinally movable part having a recess;
- a barring bolt that extends into the recess of the movable part and prevents the movable part from rotation and longitudinal displacement, said barring bolt having a first position and a second position;
- locking pins which can extend into the barring bolt and stop the barring bolt in the first and second positions, the barring bolt and locking pins being electromagnetically actuated;
- and
- a plurality of electromagnets including a first coil that can be supplied with current and the barring bolt serving as the armature of the first coil, and second and third coils that can be supplied with current and respective one of the locking pins serves as the armature of the second and third coils, wherein, in the first position of the barring bolt, the locking pins lock the barring bolt into the recess of the movable part, and in the second position, the barring bolt is withdrawn from the recess and additionally locks the locking pins in an unlocked position when the first coil is not supplied with current.
2 more elements
An electromagnetically-actuated lock comprising:
- a rotatable and longitudinally movable part having a recess;
- a barring bolt that can extend into the recess of the movable part preventing the movable part from rotational and longitudinal displacement, said barring bolt having a first position and a second position, said barring bolt further having a first indentation and a second indentation;
- locking pins which can extend into the barring bolt and stop the barring bolt in the first and second positions, the barring bolt and locking pins being electromagnetically actuated;
- and
- a plurality of electromagnets including a first coil that can be supplied with current and the barring bolt serving as the armature of the first coil, and second and third coils that can be supplied with current and respective one of the locking pins serves as the armature of the second and third coils, wherein, in the first position of the barring bolt, the locking pins lock the barring bolt into the recess of the movable part by engaging said first and second indentations of the barring bolt respectively, and wherein, in the second position, after the barring bolt is withdrawn from the recess, the locking pins are returned to the engaged position under the barring bolt and when the first coil ceases to be supplied with current, said barring bolt additionally locks the locking pins in an unlocked position preventing unintentional blocking by the barring bolt of the moving part.
2 more elements
Dependencies are inferred from the claim text.