Abstract: A padlock configured to be locked and unlocked by a key includes a key-retaining cover. The padlock includes a lock body having an internal cavity with a locking mechanism received therein. The locking mechanism is a linear lock configured to receive the key through a keyhole to lock and unlock the padlock. A direction of insertion of the key into the locking mechanism is parallel with a direction of displacement of a plurality of tumblers in the locking mechanism thereby creating an outward ejection force on a fully-inserted key. The cover is disposed on the locking mechanism proximate the keyhole. The cover is configured to retain the key in position relative to the locking mechanism against the outward ejection force after the key is received in therein.

Abstract: A deadbolt securing assembly includes a restraint that has a rounded portion being positionable around a stem of a doorknob on a door. The restraint has a rhombus portion that is spaced from the rounded portion. The rhombus portion is positionable around a deadbolt knob on the door when the rounded portion is positioned around the stem of the doorknob. Thus, the restraint inhibits the deadbolt knob from being rotated when the restraint is positioned between the doorknob and the deadbolt knob. In this way the restraint inhibits the door from being unlocked with a key. A doorknob pad is coupled to the rounded portion of the restraint to frictionally engage the stem of the doorknob. A deadbolt pad is coupled to the rhombus portion of the restraint to frictionally engage the deadbolt knob.

Abstract: An apparatus for avoiding abandoning an infant in a vehicle, the apparatus including: a mechanism, for providing a first state of avoiding removal of the key from a vehicle's lock, and a second state of allowing removal of the key; and a control, for controlling the mechanism to one of the states of the mechanism as a function of presence of an infant in the vehicle, thereby avoiding the key's removal as a function of the presence of the infant.

Abstract: In one example, a padlock storage system includes a central portion including a padlock body having a shackle and a key for opening the padlock body. The system includes an upper end having a chamber for accommodating the shackle and a lower end having a chamber for placement of a key. Additionally, a coupling system between the central portion and the lower end allows for rotation of the lower end in relation to the central portion and promotes the unlocking of the shackle, where the key activates the unlocking. The padlock system is operable in two operating positions, where the upper and lower ends are able to attach to each other by removal of the central portion or where the central portion is attached to both ends. When the central portion is removed, a retention capsule for containing the key is formed, and which can be held in an apparatus.

Abstract: A mechanical key is to be prevented from coming apart, a head portion of the mechanical key is to be attached to a main body for use and the main body is to be prevented from being disassembled unintentionally when using the mechanical key. In a key lock structure of a mechanical key of a portable device in which a mechanical key is storable in a main body, the main body is configured in a two-piece structure including a first case and a second case, the first case includes a first storage section for storing the mechanical key and a second storage section for storing a key lock mechanism of the mechanical key, the lock mechanism locks the mechanical key stored in the first storage section to prevent the mechanical key from coming off and unlocks in response to a predetermined operation to allow the mechanical key to be pulled out.

Abstract: A key remote control cover for covering the remote control portion of a remote control key to prevent inadvertent pressing of remote control buttons while handling the key includes a rigid main body portion having an interior, a closed first end, and an open second end. The main body portion is designed for surrounding the bow of a key. A slot is positioned in the closed first end of the main body portion such that the slot is designed for receiving a blade of the key therethrough while the main body portion surrounds the bow of the key.

Abstract: A portable device includes a main body, which has a mechanical key retainer, and a mechanical key, which is removably retained in the mechanical key retainer. An engagement projection extends from the mechanical key in a direction perpendicular to the direction in which the mechanical key is inserted into the mechanical key retainer. The engagement projection is formed from a resilient material. The mechanical key retainer includes an engagement recess for engaging the engagement projection when the mechanical key is retained in the mechanical key retainer. This structure reduces the size of the portable device and improves portability of the portable device.

Abstract: An apparatus for preventing a deadbolt lock from being opened from the outside of a door with a key. The base is constructed from resilient material, the base defining at least one aperture for receiving one of a plurality of types of finger actuator in one of a plurality of orientations, the aperture shaped to prevent a finger actuator inserted therein from rotating relative to the base. A U-shaped plate is coupled to the base and is moveable between an extended position wherein the U-shaped plate is engageable with a member extending outwardly from the door and a storage position wherein the U-shaped plate is adjacent to the base. When a finger actuator is in the locked position and inserted into the aperture, and when the U-shaped plate is engaged with the member extending outwardly from the door, the finger actuator is prevented from moving into the unlocked position.

Abstract: Apparatus is simply hung on a deadbolt knob when the deadbolt is in locked position. It prevents the deadbolt knob from rotating enough to retract the deadbolt. This ensures that the door cannot be unlocked from the outside. A passage in an upper end of the apparatus is dimensioned to receive the deadbolt knob. The deadbolt knob is not round. The passage has side walls narrow enough to prevent the deadbolt knob from rotating freely within the passage. As the knob is rotated, the knob engages the side walls of the passage so that the entire apparatus rotates until the lower end of the apparatus engages a fixed element that prevents further rotation of the knob. That fixed element is either the door jamb or the doorknob. This immobilizes the knob and deadbolt.

Abstract: A training handcuff key for use during training of security officers in the use of handcuffs used to restrain a subject. The training key includes a magnet washer that holds the key adjacent the surface of the handcuff keyhole, even during violent jerking and/or dropping of the handcuffs during simulated apprehension situations. The training key operates in all respects as does a standard handcuff key, but includes the feature of remaining adjacent the handcuff keyhole, while having a profile which does not interfere with the training use of the handcuffs. The training key is removable after completion of the training exercises, permitting the handcuffs to be used in a standard manner. Use of the training handcuff key dramatically reduces the time required to remove the handcuffs after they have been applied to the subject, therefore allowing the trainer and the trainees more time to develop proper and efficient methods of handcuffing and dramatically improve their skills in proper handcuffing techniques.

Abstract: A deadbolt security attachment, removably installable on a deadbolt latch handle by an occupant within a room or structure, made up of a flexible strap which secures to the deadbolt handle, is wrapped about the shank of a doorknob, and is extended to secure to itself, the strap facing surfaces including hook and loop securing material. When the present device is secured between the doorknob shank and the deadbolt latch handle, the latch handle cannot be moved through its normal arc of operation to allow the door to be opened. Even if a person attempting entry to the area has a key to the deadbolt lock, the torque which may be transmitted to the lock by the key, is easily overcome by the present security strap. The present device is completely removable from the doorknob shank and deadbolt latch handle to be carried by the user when the room is not occupied.

Abstract: A reminder device attachable to a key ring and engageable with a key shaft to prevent the utilization of the key and thus remind the user of a task to be performed. The device is designed from a single piece of clear flexible plastic, which can be repeatedly stretched. At one end of the clear flexible plastic is a tube (10). The tube (10) has a inner opening (12) and a outer opening (14). At the other end of the clear flexible plastic is a ring terminal (16), which has a hole (18) at the center. At the middle of the clear flexible plastic is a thin bridge (20), which connects tube (10) to the ring terminal (16). The ring terminal (16) attaches to the key ring and the tube (10) is selectively engageable with a key shaft of a key on the key ring.

Abstract: A portable deadbolt lock security device is configured to prevent the handle of the deadbolt lock from being turned. The device includes a flexible strap having a first end, a second end, and a medial portion. An opening is located in the first end of the strap. A fastener is provided for mutually engaging the second end of the strap with the medial portion. In use, the handle of the deadbolt lock is turned to its locked position and inserted into the opening in the first end of the strap. Subsequently, the second end of the strap is encircled about the stem of a doorknob, pulled taut, and brought into mutual engagement with the medial portion of the strap.

Abstract: An object of this invention is to provide a door unlocking device adapted unlock a door by transmitting a signal in the air through a signal transmitter, which can unlock the door even when the power source of the signal transmitter, namely, the battery has consumed up. With a door unlocking device, upon insertion of an ignition key into the rotor of a key cylinder, a shutter is opened to operate a shutter switch. Under this condition, the rotor is turned in opposite directions from the neutral position according to a predetermined rotor turning pattern. The rotor turning pattern is discriminated by a rotor-turning-pattern discriminating circuit. Ensuring that the rotor turning pattern is the one predetermined for unlocking the door, the rotor-turning-pattern discriminating circuit activates an electric operating mechanism to cause a lock mechanism to unlock the door.

Abstract: The present invention relates to an improved security device. The improved security device includes a U-shaped member which is designed to engage the shaft of a doorknob. Attached to the U-shaped member is a locking plate which has openings therein to receive either the latch of a deadbolt or the key head of a key inserted into a deadbolt. The improved security device, when in place, prevents entry into a dwelling by a person unlocking a deadbolt by preventing the rotation of a deadbolt latch or a key head inserted into the deadbolt.

Abstract: A barrel lock assembly for use in securing a lock housing over the latch or access point of a securable enclosure, such as a utility meter box, is disclosed, having a bar member with a stop on the distal end for engaging a surface on the lock housing or on the enclosure to be secured. A second bar member is disposed parallel to the first and has a head portion which receives the proximal end of the first bar member. The head and the first bar member have axially aligned apertures for receiving a suitable padlock and holding the assembly together.

Abstract: A master key board device for the retention, protection, and control of keys. The device is preferably wall mountable, having a face plate containing slots for a desired number of keys. Each key slot has an associated locking device which is controlled by a universal key. The locking device carries an arm which engages specially modified keys to retain them in the key board, and releases them to persons having the proper universal key, but retains the universal key, so that keys can be removed from only one slot by each universal key.

Abstract: Disclosed is an auto anti-theft ignition switch lock for preventing unauthorized access to the ignition switch which is mounted on the steering column of most conventional automobiles. The ignition switch lock includes a housing, one end of which is shaped to conform to the contours of a steering column, having a latched enclosure member which is shaped to adapt to the column for securement of the device to the steering column. The device further includes a housing and a movable access door therein which is shaped to conform to the contours of a pair of long narrow uniform furrows which is manifested beneath the surface of a pair of interior walls within the housing, stops, guide surfaces and a key operated latch for selectively controlling the movement of the door, which moves along in constant frictional contact with the smooth surface of the pair of hollowed out furrows.