Security door lock with remote control

• US 6,351,977 B1
• Filed: 06/19/2000
• Issued: 03/05/2002
• Est. Priority Date: 08/05/1998
• Status: Expired due to Fees

• Current Assignee: Duarte M. Oliveria, Paul L. Pedroso
• Original Assignee: Duarte M. Oliveria, Paul L. Pedroso
• Inventors: Pedroso, Paul L., Oliveria, Duarte M.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): MARC-COLEMAN, MARTHE Y
• Application Number:
  US09/596,598
• Time in Patent Office: 624 Days
• Field of Search: 702/56, 702/57, 702/77, 702/786, 702/787, 702/80, 702/81, 702/82, 292/144, 292/162, 292/DIG.51
• US Class Current: 70/257
• CPC Class Codes: E05B 2047/0016 with linearly reciprocating motion
• CPC Class Codes: E05B 2047/0058 by batteries
• CPC Class Codes: E05B 2047/0068 Door closed
• CPC Class Codes: E05B 41/00 Locks with visible indication as to whether the lock is locked or unlocked indicator lights E05B17/10
• CPC Class Codes: E05B 47/0012 with rotary electromotors actuators with rotary electromotors per se H02K7/06, H02K23/68
• CPC Class Codes: E05B 63/0052 Locks mounted on the "frame" cooperating with means on the "wing" E05B47/0046, E05B65/0829, E05B65/0847, E05B65/0882 take precedence
• CPC Class Codes: G07C 9/00896 specially adapted for particular uses
• CPC Class Codes: Y10S 292/51 Bolt guides
• CPC Class Codes: Y10T 292/0968 Rigid
• CPC Class Codes: Y10T 292/1021 Motor
• CPC Class Codes: Y10T 70/5978 With switch
• CPC Class Codes: Y10T 70/7062 Electrical type [e.g., solenoid]
• CPC Class Codes: Y10T 70/7096 With mechanism having rocker arm or linked bars
• CPC Class Codes: Y10T 70/7113 Projected and retracted electrically

Abstract

An electrically operated, strong, security system comprising a lock with remote control installed in a wall adjacent to a door frame or under a door. The lock comprises at least one rod which extends into the door when the door is closed and in a locked state. In an unlocked state an actuator retracts the rods from the door, back into the door frame or into the floor. The security lock system provides a manual control for the lock inside a house or building along with indicator lights showing the lock status. An emergency DC battery provides power for the security lock if there is a primary power outage. A remote control locks all doors in the house simultaneous that have such a security lock, and the remote control unlocks only the door or doors selected to be unlocked. The underfloor embodiment of the lock comprises mounting an elongated moveable rod within the door whereby the rod extending from the underfloor lock pushes the door rod upward into the top of the door frame thereby securing the door at the top and the bottom.

Claims

1. A security door lock for mounting inside a wall comprising:

means for generating a signal to activate and to deactivate said door lock;

means, connected to said signal generating means for extending a piston a predetermined distance in response to said activate signal;

means attached to said piston for moving at least one rod said predetermined distance from a first position to a second position when activated, said rod returning to said first position when said lock receives said signal to deactivate;

means, attached to said moving means parallel to said piston, for stabilizing said moving means; and

said stabilizing means being secured by retaining means attached to a wall of said door lock for allowing said stabilizing means to slide said predetermined distance when said piston is extended.

2. The security door lock as listed in claim 1 wherein said moving means comprises said one rod protruding from a first area and in parallel with another rod protruding from a second area.

3. The security door lock as recited in claim 1 wherein said means for extending said piston comprises an actuator.

4. The security door lock as recited in claim 1 wherein said moving means is attached to said piston with a pair of arms extending from said moving means.

5. The security door lock as recited in claim 1 wherein said signal generating means comprises:

means for transmitting a coded signal;

means for receiving and decoding said coded signal;

means for generating said lock activating signal in response to said decoded signal when said door is closed.

6. The security door lock as recited in claim 1 wherein said signal generating means comprises a remote control transmitter.

7. The security door lock as recited in claim 1 wherein said lock comprises means for sensing said door being closed before allowing said piston extending means to be activated.

8. The security door lock as recited in claim 1 wherein said lock comprises means, extending from said stabilizing means, for manually locking and unlocking said door lock.

9. A security door lock system for mounting inside a wall adjacent to a door and a door frame comprising:

a remote control transmitter for generating a coded signal;

receiver means for decoding said coded signal from said transmitter;

means for sensing that said door is closed;

means connected to said receiver means and said closed door sensing means for generating a lock control signal and an unlock control signal;

actuator means connected to said lock control signal generating means for extending a piston a predetermined distance in response to said lock control signal;

a rod holder bar attached to said piston for moving at least one rod said predetermined distance from a position in said door frame to a position inside said door in response to said actuator means receiving said lock signal, said at least one rod being retracted to said position in said door frame in response to said actuator means receiving said unlock control signal;

a bar stabilizer portion of said rod holder bar, attached approximately perpendicular to a bar portion of said rod holder bar and parallel to said piston, for stabilizing said rod holder bar, said bar stabilizer portion being positioned a predetermined distance away from said attachment of said bar portion to said piston; and

said bar stabilizer portion being secured by retaining means attached to a wall of said door lock for allowing said rod holder bar to slide said predetermined distance when said piston is extended.

10. The security door lock system as recited in claim 9 wherein said rod holder bar comprises said one rod protruding from a first end area of said bar portion to within said door frame and another rod protruding from a second end area to within said door frame.

11. The security door lock system as recited in claim 9 wherein said rod holder bar attaches to said piston by a pair of spaced apart arms extending from said bar portion of said rod holder bar.

12. The security door lock system as recited in claim 9 wherein said lock system comprises means extending above said bar stabilizer portion for manually locking and unlocking said door lock system.

13. The security door lock system as recited in claim 9 wherein said system comprises an AC power source and means for providing DC power to said system when the AC power source is unavailable.

14. A method of providing a security door lock for use in a wall adjacent to a door and a door frame comprising the steps of:

generating a signal to activate and a signal to deactivate said door lock;

extending a piston attached to an actuator toward a door in response to said activating signal, said piston being positioned in an enclosure adjacent to said door;

attaching a rod holder bar approximately perpendicular to an end of said piston, said rod holder bar comprising a bar portion and a bar stabilizer portion perpendicular to said bar portion;

extending at least one rod from said bar of said rod holder bar into a door frame;

moving said rod from said door frame into said door, when said piston is extended; and

stabilizing said rod holder bar means by retaining means attached to a wall of said door lock for allowing said bar stabilizer portion of said rod holder bar to slide in parallel with said extending piston.

15. The method as recited in claim 14 wherein said step of generating a signal to activate and a signal to deactivate said door lock comprises the steps of:

generating a coded signal with a remote control transmitter;

receiving said coded signal in means for decoding said coded signal;

determining said door is closed with sensor means positioned at said door frame prior to providing said activating signal to said piston.

16. The method as recited in claim 14 wherein said step of extending at least one rod from said rod holder bar comprises the step of extending a second rod from said rod holder bar, said rods being spaced apart a predetermined distance.

17. The method as recited in claim 14 wherein said method comprises the step of providing a door sensor to determine said door is closed before allowing said piston to be activated.

18. The method as recited in claim 14 wherein said method comprises the step of manually locking and unlocking said door lock by providing a lever extending from said bar stabilizer portion of said rod holder bar enabling said rod holder bar to be moved back and forth.

19. A housing comprising:

a first generally rectangular area having side walls;

a second generally square area having side walls, said second area extending perpendicular to said first generally rectangular area with no barrier between said first area and said second area;

a rod holder bar disposed within said first area and said second area, an elongated bar portion positioned in said first area and a bar stabilizer portion attached perpendicular to said bar portion and positioned in said second area;

means, attached to an inner wall of said housing, for retaining flanges on lower portions of said bar stabilizer, said retaining means allowing said flanges to slide back and forth;

a lever extending above a top portion of said bar stabilizer for manually moving said rod holder bar back and forth within said housing;

first threaded receptacles for receiving slide tubes positioned on opposite ends of a front panel of said housing;

second threaded receptacles for receiving slider shafts positioned on opposite ends of said bar; and

a pair of spaced apart arms extending from said bar parallel to said bar stabilizer.

20. The housing as recited in claim 19 wherein said pair of arms comprises apertures for attaching a piston of an actuator.

21. The housing as recited in claim 19 wherein said rod holder bar comprises wing means for strengthening the intersection of said bar portion and said bar stabilizer portion.

22. A security door lock for mounting under a door comprising:

means for generating a signal to activate and to deactivate said door lock;

means, connected to said signal generating means, for extending a piston a first predetermined distance in response to said activate signal, said piston extending means being attached to a housing for said door lock;

means attached to said piston for moving a rod a second predetermined distance in a direction opposite the direction of said piston;

means, positioned adjacent to said piston extending means and formed as part of said housing, for receiving a hollow tube, said hollow tube being screwed into said part of said housing; and

an end of said rod being inserted into said hollow tube and attached to said rod moving means beyond said hollow tube.

23. The security door lock as recited in claim 22 wherein said rod moving means comprises an interleaving rack and cam combination, said rack being attached to said piston extending means and said cam having a cam follower coupled thereto, said cam follower being attached to said rod.

24. The security door lock as recited in claim 22 wherein said rod moving means comprises a rack attached to said piston, said rack comprises teeth which interleave with teeth of a sprocket portion of a cam, said cam driving said rod whereby said rack and cam translate said extending of said piston into moving said rod in said opposite direction.

25. The security door lock as recited in claim 24 wherein said door lock comprises a cam follower having a guide post, and

said cam comprises a curved channel for said guide post to travel therein, said cam follower being attached to an end of said rod for moving said rod into said door.

26. The security door lock as recited in claim 24 wherein said rod moves said predetermined distance into a bottom portion of a door, said rod pushing a second rod upward said second predetermined distance within said door and into a door frame above said door.

27. In combination:

a housing for a door lock;

an actuator mounted in said housing having a piston, said piston extending in response to a control signal;

a rack attached to an end of said piston, said rack having a side edge inserted in a linear channel of said housing, said rack having a plurality of teeth;

a cam comprises a sprocket, said sprocket comprises a plurality of teeth, said plurality of teeth of said sprocket positioned to mesh with said plurality of teeth of said rack for driving said cam, said cam further includes an open curved channel;

a cam follower having a guide post, said guide post being positioned in said curved channel of said cam, said cam follower having a stabilizer portion inserted into a linear follower channel of said housing;

a rod attached to said cam follower, said rod being extended by said cam follower for insertion into a door.

28. The combination as recited in claim 27 wherein said combination comprises an outer tube into which said rod is inserted, said outer tube being secured to a portion of said leg housing above said cam follower.

29. The combination as recited in claim 27 wherein said rod extends into a bottom portion of said door pushing a second rod upward within said door and into a door frame above said door.

30. The combination as recited in claim 27 wherein said sprocket of said cam comprises 36 teeth around the circumference of said sprocket.

31. The combination as recited in claim 27 wherein said door lock comprises a manual override cable, said cable connects to a control box mounted in a wall near said door.

32. A method of providing a security door lock for mounting under a door comprising the steps of:

generating a signal to activate and to deactivate said door lock;

extending a piston a first predetermined distance in response to said activate signal, with means connected to said signal generating means, said piston extending means being attached to a housing for said door lock;

moving a first rod a second predetermined distance in a direction opposite the direction of said piston with means attached to said piston extending means, and

attaching said first rod to said means attached to said piston extending.

33. The method as recited in claim 32 wherein said method comprises the step of inserting said rod into a hollow tube for lock strength, said hollow tube being attached to said housing.

34. The method as recited in claim 32 wherein said method comprises the step of providing a second elongated rod within said door and positioning said first rod to push said second rod upward out of said door and into a door frame above said door.