3038results about "Cylinder locks" patented technology

The invention discloses an automatic alarm invisible connection interlocking double-key anti-theft lock. A fixed contact is arranged on a lock body or a fixed shell of the anti-theft lock, a specially-matched key hole and an invisible hole are formed in a lock cylinder, the front ends of the lock body and the lock cylinder are provided with interlocking covers, a locking needle hole is formed in a locking ejection column, an invisible connection device is arranged in the invisible hole, an invisible spring is installed in an invisible bearing hole in the back end of the invisible connection device, an interlocking hole in the lock body is provided with an interlocking spring, a centre, a locking needle and an abutting-against needle, a rotary contact is arranged on a rotary connection device, the rotary connection device is located behind the invisible connection device, an electronic telecontrol device, the rotary contact and the fixed contact are connected into a circuit of an electromagnet, and the electromagnet is connected with a locking transverse piece. The invisible connection device and a specially-matched key are disconnected, the invisible connection device and the rotary connection device are disconnected, the lock cylinder and the rotary connection device are disconnected, the electronic telecontrol device is invisibly installed in the circuit of the electromagnet, the ejection column can be transversely locked through the centre and the locking needle, an interlocking key and a specially-matched key are separated, and alarming, hiding, interlocking and multiple theft prevention of the anti-theft lock are achieved.

The invention discloses a front and back lock comprising a lock body (1), a front lock cylinder (2), a spring (3) and a keyhole (22); the front lock cylinder (2) is internally provided with an atypical spring (4) with a side wall notch (5); the front lock cylinder (2) is internally provided with a side spring hole (7) communicated with a spring hole (6); the side spring hole (7) is internally provided with a side spring (8); a rear lock cylinder (9) is arranged in the rear of the front lock cylinder (2) and is provided with a rear spring hole (10) corresponding to the rear end of the side spring hole (7); the rear spring hole (10) is internally provided with a lock spring (11); and the lock body (1) is internally provided with a lock body spring hole (12) corresponding to the lock spring (11). The front and back lock is characterized in that a sharp corner (13) is arranged at the front end of the lock spring (11), or the sharp corners (13) are simultaneously arranged at the front end of the lock spring (11) and the rear end of the side spring hole (7). The lock ensures the stable leakage of the front lock cylinder (2) and the rear lock cylinder (9) by utilizing the mutual occlusion of the sharp corner (13) at the front end of the lock spring (11) and the sharp corner (13) at the rear end of the side spring hole (7). When the lock is unlocked by using an unlocking tool, the front lock cylinder (2) is idle, thereby effectively preventing from being twisted and pulled by the unlocking tool and rotated by external force to open and increasing the safety of the lock.

The invention provides a novel magnetic mechanical anti-theft lock which comprises a wafer type key, a lock core rotor and a lock shell, and the wafer type key comprises a wafer; at least six magnetic blocks are arranged in the wafer, and the lock core rotor is a T-shaped cylinder on the appearance, and matches with the lock shell in a contacting way; a second magnetic spring blind hole and a magnetic spring are arranged in the position where the lock core rotor corresponds to the magnetic blocks, and the magnetic spring and the corresponding magnetic block are mutually repellent in terms of magnetism; an iron spring is respectively arranged in the position where the lock shell corresponds to the magnetic spring, and part of the iron spring convexly extends to the blind hole of the second magnetic spring; the bottom of the iron spring is also connected with a return spring, and the lock core fixing hole accommodates the narrow part of the lock core rotor. As the lock core of the lock has no key hole, destruction by tools such as a bolt driver, a screwdriver and the like can be prevented; besides, the key of the lock can not be easily duplicated, and the lock has multiple anti-theft functions, elegant appearance, strong invisibility and higher security.

A re-keyable lockset that employs pairs of first and second pins. Coupling of the first and second pins to one another defines a key profile for a mating key. A second key with a different key profile may be installed to the lockset when the first and second pins are uncoupled from one another. Thereafter, the first and second pins may be re-coupled to one another to define the key profile of a new mating key. A method for re-keying a lockset is also provided.

A door lock particularly suited for an apartment or condominium where the resident has an entry key and management personnel also have a key that will allow access to the apartment, the door lock having a spring loaded axial pin which is retained in an externally visible position when the lock is actuated by the resident's key and which is released to an externally non-visible position when the lock is actuated by the management key.

This invention pertains to the lock cylinder of a rekeyable padlock. According to a preferred embodiment of the present invention, a rekeyable padlock is provided with a lock cylinder formed within. The lock cylinder includes a cylindrical core formed to receive a key and an outer casing formed around the core. A viewing opening is formed within the casing wall, the viewing opening allowing access to pin openings formed within the core to receive selected pins. The viewing opening is shaped such that it provides a viewing area larger than the pin openings, thereby allowing greater visibility when the pins are placed within the pin openings. The advantages of this viewing opening include greater ease in placing the pins into the pin openings and easier detection when a selected pin is the wrong length and does not sit flush within the lock cylinder core.

A locking device for a lock cylinder (12) has an electronically controlled inhibiting element (2), which in an inhibit position (x.sub.S) blocks movement of a rotor (1) relative to a stator (6) and frees the rotor (1) in a free position (x.sub.F). A drive (9) exerts a working force (F.sub.A) on the inhibiting element (2), by which inhibiting element (2) can be reversibly transferred from the inhibit position (x.sub.S) into the free position (x.sub.F) and vice versa. A guide (52-57) is connected to the drive (9) and, at least outside the free position (x.sub.F), clearly defines the position of the inhibiting element (2). A restoring device (3) exerts a restoring force (F.sub.R) directed away from the free position (x.sub.F) on the inhibiting element (2), when that element is between the free position (x.sub.F) and a rest position (x.sub.O). In the rest position (x.sub.O) and in positions between the rest position (x.sub.O) and the free position (x.sub.F), the inhibiting element inhibits movement of the rotor (1). The locking device is resistant to external, undesired vibration and / or shock effects or magnetic action.

A parking meter has a vault housing and a vault door removably covering a main opening and having a back facing an interior of the housing. A lock assembly includes a lock cylinder disposed on the door and that has a body and a usually movable portion. A bolting mechanism operatively connects to the movable portion of the lock cylinder for selectively providing a locked position. A support structure is disposed on the interior side of the door and holds the bolting mechanism. A removable retainer engages the body of the lock cylinder, which is usually stationary. This results in the retainer preventing motion of the body sufficient to operate the bolting mechanism. The support structure is configured for releasably maintaining the retainer on the lock cylinder body. The vault housing defines a tool hole providing access to the interior of the housing for insertion of a disengagement tool through the tool hole. The retainer has a portion configured for connecting to the disengagement tool and is configured so that retracting the disengagement tool while connected to the retainer provides enough disengagement from the lock cylinder body to permit motion of the lock cylinder body to operate the bolting mechanism when the movable portion will not move relative to the body.

The invention relates to a cross mechanical anti-theft lock with a fixed lock cylinder. The lock comprises a prying resistant plate, a drilling resistant piece, a backboard, a lock cylinder, an inner rotary ring, an outer rotary ring, a dialing ring, a moment limiter, a cam shaft and a matched key. The lock is mainly characterized in that the lock cylinder is fixedly assembled between the prying resistant plate and the backboard and cannot move. Driven by the cam, the inner and outer rotary rings at the periphery of the lock cylinder synchronously rotate an angle of 15 degrees first and are staggered with the lock cylinder, and then the outer rotary ring continuously rotates independently and unlocks, so that the lock cannot be unlocked technically. The prying resistant plate is located outside the lock cylinder, and a cross hole is formed in a position corresponding to the prying resistant plate, so that the lock is prevented from being destructively unlocked by a forced unlocking tool. The moment limiter can idle when a handle is rotated with brute force, so that the lock is prevented from being damaged and cannot be unlocked. The unlocking process comprises the following steps: inserting the key without rotating the key and rotating the handle for 90 degrees. The lock is locked without the key and in a way of reversely rotating the handle for an angle of 50 degree.

A lock assembly has a housing, a lock cylinder, an adjusting block and an adjusting assembly. The adjusting block is slidably on the lock cylinder and has a wedge side facing the lock cylinder and a plurality of first wedge elements formed on the wedge side. The adjusting assembly is mounted in the lock cylinder and has multiple adjustable rack assemblies mounted in the lock cylinder. Each rack assembly has a rack element and an adjusting base. The rack element selectively abuts with a corresponding one of the lock pins and has a second wedge element selectively engaging one of the first wedge elements on the adjusting block. The adjusting base selectively engages the rack element.

A cylinder lock includes a shell and a plug inside the shell. A locking pin, a sensor pin and a flexible coupling are mounted within the plug. The sensor pin moves the flexible coupling and the coupling moves the locking pin to an unlocked position when the correct key is inserted into a key slot in the plug. The key includes a locking pin receiving notch, to allow the locking pin to move to the unlocked position. The key also includes a contact surface that moves the sensor pin and thereby moves the locking pin to the unlocked position through the flexible coupling. When an incorrect key, without the locking pin receiving notch, is inserted, the flexibility of the flexible coupling allows the sensor pin to move without moving the locking pin. The cylinder lock may also include conventional pin tumblers. The receiving notch of the key may be provided with an alignment surface that cooperates with the locking pin to control the depth the key is inserted into the lock and allow keys of varying length to align relative to the pin tumblers of the cylinder lock.

An electromechanical cylinder lock includes an outer lock shell and a rotatable lock barrel located therein which is controlled by dual locking features. A side bar or fence selectively blocks and permits rotation of the barrel with respect to the shell in response to insertion of a key into a keyway in the barrel. A slider bar is movable between a blocking position in which the side bar is prevented from permitting rotation of the barrel, and an unblocking position in which the side bar permits rotation of the barrel. Alternately, a blocking mechanism is provided to block motion of tumbler pins in the cylinder lock. A shape memory alloy actuator, such as a wire made of NITINOL disposed in the barrel is activated by an electric current in response to determination by an electronic control device whether an attempt to open the lock is authorized. Thermal interlock protection from external heating of the lock is also provided.

A high security lock and key system with an increased number of code combinations is disclosed. The system is of the kind where the blade of the key has a wave-like guiding surface (104) at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers (206) in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, the present invention provides for an extra code level (121) located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key (100) and a key blade as such, and to a lock (200) as such, for use in such a system.

A high security lock and key system with an increased number of code combinations is disclosed. The system is of the kind where the blade of the key has a wave-like guiding surface (104) at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers (206) in the lock cooperating with a side locking mechanism for locking the key plug against rotation. In order to provide an even higher number of possible code combinations, while preserving the overall dimensions of the locks and the keys of the system, the present invention provides for an extra code level (121) located at a longitudinally extending shelf surface, viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade. The invention also relates to a key (100) and a key blade as such, and to a lock (200) as such, for use in such a system.

A lock assembly has a housing, a lock cylinder, an adjusting block and multiple rack assemblies. The adjusting block is slidably received in the lock cylinder and has a wedge side facing the lock cylinder and a plurality of first wedge elements formed on the wedge side. The rack assemblies are slidably received respectively in the lock cylinder. Each rack assembly has a rack element, an adjusting base and a resilient member arranged between the rack element and the adjusting base. Each rack element and each adjusting base have a plurality teeth formed thereon and detachably engaged each other respectively. Each rack element has a second wedge element that is selectively engaged or disengaged from one of the first wedge elements on the adjusting block.

This invention is to provide a method for rekeying a rekeyable lock cylinder. The first step of entire rekeying process is to insert a first user key into a keyhole of a sliding block of a plug assembly and turn the first user key to rotate the plug assembly, then a thrust is added to the first user key to move the sliding block of the plug assembly, thereby disengaging a plurality of upper locking pieces and a plurality of lower locking pieces within a plurality of lower pin sets. Next, after pulling out the first user key from the keyhole, a second user key is inserted into the keyhole of the sliding block and turned to restore the sliding block as to reengage the upper locking pieces and the lower locking pieces. Finally, the second user key is pulled out to complete the entire rekeying process. Accordingly, the present invention may provide advantages of widely lowering rekeying cost and enhancing convenience in use, because lock replacement may be completed as soon as rekeying another user key only without replacing lock cylinder.

A re-keyable lock cylinder includes a plug body and a carrier sub-assembly disposed adjacent the plug body. The plug assembly includes a plurality of planar wafers and the carrier sub assembly includes a plurality of racks for engaging the wafers in a face-to-face teeth arrangement. The racks disengage from the wafers to separate the teeth in response to movement of the carrier such that the lock cylinder is in a re-keyable condition when the racks are disengaged from the wafers.

A connection lock capable of executing locking operation without keys includes a case to house an actuation mechanism, a rotary cylinder and an elastic element. The actuation mechanism includes a movable leg and a fixed leg. The movable leg is moved by the elastic element to be close to the fixed leg at an unlocking position in normal conditions. The rotary cylinder has a nudging member extended from the front end that can move the movable leg away from the fixed leg at a locking position. The case has a one-way hump corresponding to the rotary cylinder to allow the rotary cylinder to be turned in one way to switch the movable leg from the unlocking position close to the fixed leg and to the extended and locking position.

A side bar type cylinder lock includes a locking segment which is movable relative to the side bar and lock shell only in response to insertion of a key blade having a uniquely configured and located camming projection into the keyway. The locking segment movement is independent of lock tumbler movement and is required to permit side bar disengagement from the lock shell.

A dual-mode lock for a locker has a base, a knob, a key lock assembly, a housing and a combination lock assembly. The base is mounted through the locker. The knob is attached to the base. The key lock assembly is mounted in the knob, and has a lock core mounted rotatably through the base and having a latch for locking the locker. The housing is attached to the base and has a combination mount. The combination lock assembly is mounted in the combination mount to selectively lock or allow the lock core to rotate. Therefore, if a combination is forgotten or lost, the dual-mode lock may be opened quickly with a corresponding key and the combination reset reducing building management stress and preventing replacement costs.

A side bar type cylinder lock includes a locking segment which is movable relative to the side bar and lock shell only in response to insertion of a key blade having a uniquely configured and located camming projection into the keyway. The locking segment movement is independent of lock tumbler movement and is required to permit side bar disengagement from the lock shell.

An electromechanical cylinder lock-key combination includes a cylinder housing and a cylinder core rotatably arranged in the cylinder housing and having a key-way for receiving a key. A plurality of key actuated moveable blocking elements block the rotation of the cylinder core unless a correct key is inserted in the key-way. An optical code reader in the lock reads an optical code element provided on an inserted key. At least one of said blocking elements functions as a bar element barring insertion of the key into the key-way unless a correct optical code element is provided on the key. By using at least one of the mechanical elements already present in the lock as part of the electronically controlled blocking mechanism, in combination with the use of an optical code requiring no moveable parts for the reading thereof, space requirements in the lock device are kept to a minimum.

A self adjusting lock system including: a lock cylinder having a direction of elongation defining an axial direction for the system and having a first and a second end; a rotatable first cylindrical plug in the lock cylinder, the first plug having an axially extending key slot from the first end of the lock cylinder; a rotatable second cylindrical plug in the lock cylinder, the second plug substantially coaxial to the first cylindrical plug; a bolt which is retractable substantially perpendicularly to the axial direction by rotation of each of the first plug and the second plug; and a control and rotation unit adapted to rotate the second plug, including: a power source, a processor; a motor; a current sensor adapted to sense motor current; and a clock adapted to measure time; wherein the control and rotation unit is adapted to sense motor current over time and to adjust operation of the lock system dependent on the sensed motor current over time.

A re-keyable lockset that employs pairs of first and second pins. Coupling of the first and second pins to one another defines a key profile for a mating key. A second key with a different key profile may be installed to the lockset when the first and second pins are uncoupled from one another. Thereafter, the first and second pins may be re-coupled to one another to define the key profile of a new mating key. A method for re-keying a lockset is also provided.