Abstract: A gate latch includes a bracket including a vertical backplate, a lower plate, and an upper plate. Each of the plates is attached to and extends in the same direction away from the backplate. Each of the plates includes first and second throughholes, in which the first throughhole of the lower plate is vertically aligned with the first throughhole of upper plate, and the second throughhole of lower plate is vertically aligned with the second throughhole of the upper plate. The latch includes a rigid bolt including first, second, and third elongate portions, with the first and third elongate portions being connected together, the second and third elongate portions being connected together, and the first and second elongate portions being parallel. The first elongate portion is movably positioned in the first throughholes, and the second elongate portion is movably positioned in the second throughholes.

Abstract: A security apparatus may include a portion that engages a wall on one side of a doorway, a portion that extends through the doorway, and another portion that may engage the door on the opposite side of the doorway. In operation, the apparatus may function to transmit a force applied to the front of the door to the exterior wall to reinforce the door against an unauthorized entry (e.g., an intruder kicking the door).

Abstract: In a fastening portion for fastening an upper retaining portion and a lower retaining portion by means of a mounting screw, the upper retaining portion has a screw hole and a cylindrical guide formed around and above the screw hole. Further, a projection is formed on the inner wall of the cylindrical guide at an upper portion thereof. In a loosened condition of the mounting screw where it is disengaged from a screw hole, the head portion of the mounting screw is caught to be retained by the projection. The upper portion of the cylindrical guide is tapered so that it has an inner diameter smaller than the diameter of the head portion of the mounting screw. Accordingly, even when the upper retaining portion is turned upside down in the loosened condition of the mounting screw, the mounting screw does not fall down from the upper retaining portion.

Abstract: A locking system for closing and locking a lid on an enclosure such as a grade level enclosure. The locking system includes a latch formed on an edge of a lid of the enclosure. The latch includes a bolt recess on an upper face of the lid which opens into a slotted wall structure that forms a passage below the lid. The bolt recess has a slotted opening which receives an L-bolt that extends down into a hollow interior of the slotted wall structure. A right angle leg on the L-bolt protrudes below the slotted wall structure when a fastener head atop the L-bolt rests in the bolt recess. The fastener head of the bolt in its at-rest position in the bolt recess provides access for rotating the L-bolt (and its right angle leg) with a tool that fits into the bolt recess to engage the fastener head. The bottom leg of the L-bolt, when rotated to its locked position, protrudes under a locking surface inside the enclosure. This releasably locks the lid to the enclosure.

Abstract: A door securing apparatus is disclosed for securing a door in a closed position in a door frame. The apparatus includes an anchor member for removably securing to a portion of the door frame, with at least a portion of the anchor member being positionable between the door and the door frame. The apparatus also includes a pressure assembly configured to engage the anchor member and press against the door and the door frame.

Abstract: A hollow aluminum pole has access to its interior through a hand hole frame having an access aperture which can be blocked by a cover having a lower end pivotally attached to the hand hole frame by a pivot pin. The pivot pin is biased inwardly by a coil spring which permits outward movement of the cover to a position in which it can be rotated downwardly out of alignment with the access opening.

Abstract: A bar lock having two interconnected aluminum bars for engaging handles on folding doors, and preferably extending across all the seams in the folding doors to prevent the simultaneous outward and lateral opening motion of the doors. Clamping the horizontal door handles on folding fireplace doors bars children from opening the doors.

Abstract: The present invention is a portable door lock which comprises a bracket having a protrusion capable of insertion into a lock chamber of a doorframe. The bracket is connected by means of a hinge to a threaded bolt, upon which a hinged brace is slidably mounted. The hinged brace comprises a first member, which is adapted to be pressed against the door, pivotally connected to a second member, which is adapted to be pressed against the doorframe. A spring is mounted upon the first member and engages the second member, urging the second member away from the first member. The second member is provided with a stop which engages the first member. A thumbwheel is mounted upon and threadably engages the threaded bolt, effectively retaining the hinged brace upon the threaded bolt.

Abstract: A door support for holding open a door equipped with a hydraulic-type closure having a pair of closure arms and a hydraulic element comprises first and second channel members, each having a top side, a hinged wall and latching wall, with both walls spaced apart and extending perpendicular from the top side, forming a generally rectangular configuration. A hinge, which is fixedly attached to the hinged walls of the first and second channel members, permits rotation of the channel members about the longitudinal axis thereof for alignment of the channel members with that of the selective positioning of the closure arms. An elongate, flexible band, having a latching end and a secured end, and a bolt or cylindrical, elongate pin positioned through the apertures of the latching end and latching wall of the second channel member secures or locks the channel members in a stationary position to prevent lateral movement of the closure arms.

Abstract: The device is used for security by e.g the occupier of a hotel room. A toggle-type self-gripping mechanism is provided with thin jaw-blades. The blades are entered into the slot or gap between a door and a door jamb. The jaws engage the door-bolt, and the device enables a heavy gripping clamp to be applied to the bolt. The thin jaws do not buckle under the heavy clamping because they are constrained against buckling by the slot. A screw-clamp may be substituted for the toggle-clamp.

Abstract: A locking system comprising a locking fastener having tamper-resistant features, and a special key having a bit at one end for engaging a socket in the head of the locking fastener to rotate the latter. The internal configuration of the socket corresponds to an external configuration of the bit, and the corresponding contour of the socket prevents the fastener from being turned by tools other than the special key. The fastener may have left-handed threads on its shaft and its head may be recessed in a counterbore in a closure part to prevent gripping tools from gripping an external surface of the head. The configurations of both the socket and the key may readily be made by economical metal working techniques.

Abstract: A portable, adjustable door lock device and method of use therefore, which provides a device having a first and second blade member which are pivotably pinned together, thus, forming substantially a "V-shaped member" having two pointed ends, with the ends being insertable and adjustably positionable between the edge of a door and the striker plate affixed to a door frame, so as to frictionally capture the reciprocable bolt therein, thus, preventing opening of the door from the exterior side.

Abstract: The present invention provides a new and improved portable door lock that can be used in conjunction with a door, a door jamb and a striker plate. The portable door lock comprises a bolt having a first end, a second end and an intermediate extent therebetween. A cylindrical threaded portion comprises the first end of the bolt. The cylindrical threaded portion has an outer diameter defined by the threads. A flat portion comprises the second end of the bolt. The flat portion has a width and a thickness which allows it to extend between a door and a door jamb. A hook portion extends from and is integral with the second end of the bolt. The hook has a top surface and a bottom surface. The hook is adapted to be engaged around the striker plate of a door jamb. A securing fitting is employed by the lock. The fitting has a hollow cylindrical first end and a first side and a second side, and a flat plate at the second end. The flat plate extends 90 degrees relative to, and at one side of, the cylindrical first end.

Abstract: A security lock (10) including an arm (14) and a mounting member (12) is provided for use with a dead bolt lock assembly having a lock actuator on a first side (34) of a door (32) and a turn piece (36) on a second side (38) of the door (32). When the security lock (10) is in an engaged position (42), abutting surfaces (22a, 22b) of the arm (14) are positioned immediately adjacent the turn piece (36) to abut and restrict rotation of the turn piece (36).

Abstract: Small portable mechanical units manually installable to provide an auxiliary lock for outward opening doors such as are normally used on motor homes etc are disclosed. Embodiments are included that are useable on doors with various types of latching mechanisms.

Abstract: A portable door lock operable from the inside of a door for selectively clamping or unclamping the door latch. Such door lock comprises two halves pivoted together centrally and having confronting serrated semi-circular openings at one end and screw means for selectively pivoting said halves at the other end.

Abstract: An auxiliary locking device to be employed in a door knob includes a lock body that has at least two parallel through-bores extending through the body. A first retaining bolt is slidably received in one of the through-bores and includes two ends extending out from the lock body. A second retaining bolt is slidably received in the other one of the through bore and has an end portion extending from the lock body. The end portion of the second bolt has a plate member with an opening around the periphery of which a wall body is mounted. The wall body confines a through-hole that generally has a cross-section equal to and in communication with the opening.

Abstract: A door bar for use in combination with a door and a door frame for maintaining the door in a closed position with respect to the frame includes a plate member which is attached to the door frame and a bar member defining a slot therein. The plate member defines a first planar element and a second planar element at a right angle to the first planar element, and the bar member is positioned, by use of the slot, over the plate member and between the door-door frame and the second element whereby the door is retained in a closed position by means of the bar member.

Abstract: A removable door lock system is disclosed that includes a modified striker plate and a cooperable plate. The striker plate includes an opening in an outwardly extending tongue. The plate has two end portions adapted to bear against the door and the doorjamb. Also, the plate includes an inwardly extending lip insertable into the striker plate tongue opening when the door is in a closed position to prevent the door from opening.

Abstract: In a first embodiment of the invention there is a substantially annular and flat frame for circumscribing a latch, in a door or the like, by interfitting between the latching edge of the door and the door-way frame. The latch-circumscribing frame has a pair of blades formed thereon on the inner surfaces thereof, and a shank portion in which a sharp-pointed rod is threadedly engaged. An outermost end of the rod has a handle fixed thereon whereby with manipulation of the handle, the sharp point of the rod is forceably torqued into arresting engagement with the latch and, simultaneously, draws the blades into incisive engagement with the latch as well. Both the blades and the point of the rod tenaciously clasp the latch therebetween to prevent unauthorized unlatching of the latch. Accordingly, any standard door latch, or the like, can be effectively dead-bolted.

Abstract: A locking device to prevent relative movement between relatively movable members such as between relatively movable sliding window and sliding door members, said relatively movable members having openings which can be placed in registration in predetermined positions of said members, said locking device including a body portion having opposite surfaces and a projecting member attached to and extending from one of the opposite surfaces thereof for insertion into cooperative engagement with the registered openings in the relatively movable members to prevent relative movement therebetween, and another portion of the said locking device for preventing movement of the projecting member after it is inserted including a member extending in spaced substantially parallel relationship to the projecting member for engagement with one of the relatively movable members to be locked, said last named member including in one form of the invention an integral angularly related portion of the body portion which cooperatively

Abstract: Disclosed herein is a door lock attachable to the edge of a door and selectively deployable to engage the floor adjacent the door to thereby prevent the door from opening. More specifically, the door lock comprises a slide adapted to be clamped to the door, the slide engaging a vertical leg of an L-shaped bracket, the horizontal leg thereof being provided with a plurality of V-shaped cuts forming downwardly directed teeth for engaging the floor or the carpet adjacent the door. Included also in the horizontal leg are two adjustable screws which may be turned downwardly to provide further engagement with the floor.

Abstract: A locking device for sliding windows and doors, including a removal-preventing bar, wherein the window is freely slidable within a track formed in the lower frame portion of a window casement, the locking device comprising a main body having a lower groove to receive a flanged wall of the track, and the body being secured thereto by an adjustable screw, the body further including a lateral-extending boss member for direct engagement with the sliding window to limit lateral movement thereof. The removal-preventing bar is secured in the main body and projects longitudinally therefrom adjacent the lower frame portion of the window and above the track of the casement, thereby preventing the window from being removed from the casement frame structure.

Abstract: A portable door securing device or lock particularly adapted for use by travelers so that such persons can secure a door, such as in a motel, hotel, or the like, in a closed condition. The device is also useful in homes, apartments, or the like, where it is desired to utilize a door lock in addition to or in lieu of the normally provided key operated lock. The device includes a rigid rectangular block having an adjustably mounted latch bolt with a lateral extension on one end thereof for engagement in the usual keeper or latch plate on the door frame with the latch bolt extending between the edge of the door and the door frame. The bolt is adjustably secured to the block which bridges the juncture between the edge of the door and the door frame for retaining the door in closed position.

Abstract: Locking means to prevent movement between relatively movable members such as between sliding windows or sliding doors, said locking means including a body portion having a flange formed adjacent opposite edges, said flanges being substantially parallel to each other and each of said flanges having a projecting member adapted to be received in a hole provided in one of said relatively movable members when the locking means are positioned to prevent relative movement therebetween.