Door locking system
AssigneeIlco Unican Inc.
InventorIlan Goldman
Life of this patent
Estimating the term…
Abstract
A locking system is provided for doors with a bolt unit installed on the inside and a control unit installed on the outside of the door. The bolt unit has a casing enclosing a bolt displaceable between a projected, locking position and a withdrawn, unlocking position. A solenoid device has an armature being displaceable between electromagnetically induced attracted and repelled positions. Linkage means are coupled between the armature and the bolt to drive the bolt between the unlocking and locking positions, respectively. A pass code may be entered into the control unit, and in response, a solenoid may be actuated by a current pulse into the unlocked position of the bolt. In addition, a reverse current pulse actuates the solenoid into a locked position of the bolt.
Claims24
A locking system for doors consisting of a door locking bolt unit installed on the inside and a control unit accessible from the outside of the door, the bolt unit comprising:
- a casing enclosing a bolt displaceable between a projected, locking position wherein the bolt engages a receiving means and a withdrawn, unlocking position;
- a solenoid device having an armature, the armature being displaceable between electromagnetically induced attracted and repelled positions;
- and
- linkage means coupled between the armature and the bolt to drive the bolt between the unlocking position and the locking position, respectively in dependent response to actuation of the armature wherein the linkage means provides a geometric multiplying effect to the locking position such that the bolt moves a greater distance than the armature, and locks the bolt in the locking position;
- and
- the control unit comprising:
- an electric power source;
- means for entering a pass-code;
- means responsive to entering of the pass-code to actuate the solenoid device by a current pulse into the unlocking position of the bolt;
- and
- means for actuating the solenoid device by a reverse current pulse into the looking position of the bolt.
A locking device for securing doors comprising:
- a door edge looking bolt having a bolt projecting position and a bolt retracting position:;
- a linkage assembly for actuating the bolt between the bolt projecting position and the bolt retracting position wherein the linkage assembly has a mechanical multiplying effect on the bolt, such that the bolt moves a greater distance than the plunger, and locks the bolt in the bolt projecting position;
- a solenoid having a plunger for driving the linkage assembly in both directions between the bolt projecting position and the bolt retracting position;
- a permanent magnet associated with the solenoid;
- a ferrous member for attracting the plunger of the solenoid for maintaining the solenoid in a withdrawn position;
- a spring for assisting in moving the plunger to a projected position wherein the ferrous member moves with the plunger;
- and
- a magnet having an attractive force to the ferrous member greater than force of the spring when the solenoid is in the withdrawn position.
Dependencies are inferred from the claim text.