Patent Application
20060145486
1. Field of the Invention
This invention relates to automatic passive door locks that reinforce and increase the locking capacity of the hinged edge of all common rectangular doors used for human ingress and egress in any type of building or vehicle where security of access is important.
2. Description of Prior Art
Security of access and egress through doors has been of concern to security minded people for many years. It has long been realized that a securely locked and bolted door is still vulnerable to break-ins if the door hinges and frames are not of equal security. On many it is a simple method to drive out the hinge pins on the hinged side of the door. Prior art includes hinges which combine a fixed pin or stud secured to one leaf of the door hinge and which engage recesses in the other leaf of the hinge when the door is closed and the hinge leaves are brought flush together. Said pin or stud prevents the hinge leaves from being separated in an outward direction if the hinge pins are removed. Prior art also includes similar pin devices in a safe or vault door which engage recesses in the safe or vault door frame when said door is in the closed position.
1. Provide a door security device of suitable metals or plastics and all combinations thereof that is simple to fabricate and install.
2. Provide a door security device that can be economically produced and marketed.
3. Provide a door security device that can be retrofitted to any existing door.
4. Provide a door security device consisting of two flat pieces similar to hinge leaves but each being separated when the door is in the open position.
5. Provide a door security device of two separate pieces mesh and interlock when the door is in the closed position.
6. Provide a door security device of two pieces where one piece is attached into a recess in the door frame and the other piece is attached into a recess in the hinged edge of the door.
7. Provide a door security device where the female piece attached to the door frame is notched or drilled to receive one or more rigid pins.
8. Provide a door security device where the male piece attached to the door is fabricated with cylindrical or tapered pins protruding from and welded, forged or cast as part of the plate.
9. Provide a door security device where the cylindrical or tapered pins extending from the male piece are fitted with rolling sleeves which may be retained on said pins by all simple mechanical means.
10. Provide a door security device where the cylindrical or tapered pins extending from the male piece are drilled parallel to their center lines to receive rotating metal rods or pins which may be retained by all simple mechanical means.
The drawings depict different views of the Door Security Locking Device.
1 Base plate of male and female leaves or portions of the Door Security Locking Device.
2 Locking pin attached to the male portion or leaf of the Door Security Locking Device.
3 Welds attaching 2 the male locking pins to the male portion or leaf of the Door Security Locking Device.
4 Recessed groove for skirt of the rolling sleeve at the base of the male locking pin.
5 Counter sunk screw hole to attach leaves of the male and female portions of the Door Security Locking Device to the door and the door frame respectively.
7 Grooves in the male pins 2 to receive crimps 9 in the rollers 8 of the Door Security Locking Device.
8 Roller sleeves fitted to male pins 2.
9 Crimps in roller sleeves 8 which secure roller sleeves 8 to the male pins 2.
10 Skirt recessed into grooves 4 in male potion base plate 1.
11 Slots in female plate 12 which receive the roller covered male pins in the closed position.
Based on the above description the examiner will see that the Door Security Locking Device is a device that can be conveniently retrofitted to existing doors to provide added security whenever required.
Although the description above contains many specifications, these should not be construed as limiting the scope of the invention but as merely providing for some of the presently preferred configurations of this invention. For example the Door Security Locking Device can be produced in a wide range of sizes and configurations and combinations of metals and plastics.
Thus the scope of the invention should be determined by the appended claims and their logical equivalents, rather than by a narrow assessment of the examples given.
