Abstract: An anti-barricading turn hub assembly is configured for use with a lockset including a bolt movable to lock and unlock a door. The anti-barricading turn hub assembly includes a spindle connected to a thumb turn on one side of the lock. The spindle is releasably engaged to a turn hub that is operable by the key from the other side of the door. Under normal operation, the spindle and turn hub rotate together to lock and unlock the bolt. In a barricading situation in which the thumb turn is held to prevent the turn hub assembly from rotating, the turn hub disengages from the spindle upon application of sufficient force through rotation of the key, and the disengaged turn hub can be rotated to unlock the bolt even if the thumb turn is held to keep the spindle from rotating.

Abstract: A system for securing a cam of a locking mechanism to a rotatable shaft, which comprises a cam for actuating a locking mechanism and a clutch that includes, in part, a sleeve body having a distal end affixed to a face of the cam and a sleeve bore having a tapered sleeve journal and a sleeve screw portion with internal threads opposite the sleeve journal. The clutch also includes a collet that is installed within the sleeve bore and which has a collet nut extending outwardly from a proximal end of the sleeve bore, a collet bore, and an outer surface having an axially-split and tapered collet journal abutting the sleeve journal and a collet screw portion with external threads engaged with the sleeve screw portion. The system further includes a rotatable shaft that is secured within the collet bore with a break-away torque that is proportional to an assembly torque applied to the collet nut.

Abstract: A deadbolt lock assembly comprising a retractable and extendable deadbolt, a housing, an outside member movably mounted on the housing, the member being normally disconnected from the deadbolt, and an operator input device on the housing, the device connecting the member to the deadbolt in response to presentation of an appropriate credential, such that a force applied to the member by the operator is mechanically transmitted to the deadbolt to move the deadbolt.

Abstract: An electrical lock system comprises an electric motor, a remote control unit for authenticating authorized users prior to granting permission and communicating such information to a motor (5) driver circuitry wherein said motor (5) is built-in in a doorknob whose axis of rotation is arranged coaxial to said cylinder's longitudinal axis such that said motor's shaft extend along a cylinder adaptor region integrating said doorknob to said lock cylinder. Said adaptor portion is coupled to a mechanical bloc connecting said adaptor region to a battery bloc and to said motor (5) through an intermediary body integral to said doorknob enclosing said motor (5) and gear mechanism.

Abstract: The present invention provides for a handle set for a lock with a latch, the handle set having an authentication circuit and actuator in the interior handle that allow access to authenticated transponders. The present invention also provides a device and method for transmitting a rotational movement and force in an electronic lock, wherein the transmission takes place in a coupled state and not in a decoupled state and wherein the transmission of force does not damage an actuator that requires little energy to change between the coupled and decoupled states. A coupling cartridge of an electronic lock can easily be handed. The electronic lock can be retrofitted in installed mortise locks and used with cylindrical locks. The electronic lock can include a security feature that prohibits the electronic lock from changing between the coupled and decoupled states.

Abstract: A clutch for an electronic door lock includes a first shaft, a second shaft, a spring, a rheological fluid, and a plunger. The second shaft has an aperture therein and is axially co-aligned with the first shaft and is rotatably mounted adjacent the rotatable first shaft. The spring is disposed in the aperture in the second shaft. The rheological fluid is held within the aperture and is capable of changing viscosities in response to the application of an electrical current across the fluid. The plunger is biased by the spring into selective coupling engagement with the first shaft and is capable of selective motion into the aperture in response to contact by a camming surface of the first shaft due to relative rotation of the first shaft with respect to the second shaft.

Abstract: Handle device for operating doors, windows and the like, comprising a first element, which is rotatable about an axis of rotation, a second element, and a coupling device which is connected to the first and the second element and is designed to selectively allow or prevent relative rotation about the axis of rotation between the first and the second element, the coupling device comprising an outer coupling member (3, 50) and an inner coupling member (5, 31), which is concentrically accommodated, rotatable about the axis of rotation, in the outer coupling member. The handle device comprises at least one engaging member (20), which is radially displaceable in the inner coupling member (5, 31), and an activating member (12, 60) which is accommodated in the inner coupling member and axially displaceable therein, parallel to the axis of rotation.

Abstract: A device and a method are provided for transmitting a movement as well as corresponding forces or moments and in particular a rotational movement, wherein the transmission only takes place in a coupled state but not in a decoupled state. Devices and methods of this kind are in particular used in the field of lock devices, such as door or safe locks and the like. The device, in particular for a movement as well as corresponding forces and/or moments comprises a drive and a take-off, wherein the drive and take-off are coupled via a coupling element in such a manner that in the decoupled state a movement of the drive causes a movement of the coupling element which is not suitable for transmitting a movement of the drive to the take-off.

Abstract: In order to enable a turning of a key of a lock cylinder onto a driven member (shaft 36) in the lock cylinder only when a proper key is inserted, yet to prohibit the turning in case of an overload, an overload lock is arranged therebetween. The driven member (shaft 36) should specifically actuate functions in the vehicle only if the correct key is used. A threshold rotation torque determines the change between the normal and the overload state. In order to improve the lock cylinder, it is furnished that a disengaging lever (40) is mounted in the cylinder housing (30) in a pivotable manner (42) and can be displaced between two pivot positions in a radial plane defined by the longitudinal axis (13) of the lock cylinder. A locking cam (41) belonging to the overload lock is arranged on the free end of the disengaging lever (40).

Abstract: A kind of cylindrical lock, this lock able to be installed on a door, includes: one transmission structure which can operate a drive base, this drive base gearing a latch mechanism; this latch mechanism having: one tubular shaped element, which can be coupled to a handle for actuation; a tube, which can be rotated and inserted into the tubular shaped element; one pushing part, having one side with at least one pushing section, this pushing section able to push the drive base at the appropriate time; a collar, which can be set on one end of the tubular shaped element, a meshing section formed on one end of the collar; an engaging element, partly installed in this pushing part, one meshing section formed on this engaging element, and this engaging element having at least one pushable section; one rotating part, having at least one pushing portion, each pushing portion at the appropriate time pushing the adjacent pushable section of the engaging element; one lock set, having a lock core linked to one transmissio

Abstract: A door lock with an improved structure is disclosed. It has a turning device that includes a positioning base. The positioning base is mounted with a circular spacer with a lock control device therein. A connecting shaft for driving the lock control device is provided with a limiting element that has a protruded stopping part at its end. The lock has a lock core whose one end allows the insertion and turning of a key. Its other end is connected with the connecting shaft and has grooves, so that the stopping part of the limiting element blocks the lock core when the door is locked.

Abstract: A locking device contains a locking cylinder with a freewheeling sleeve (11), cylinder core and tumblers (27). The cylinder core can be rotated by a matching key because the tumblers (27) which lock the cylinder core release the freewheeling sleeve (11) when the key is removed. The freewheeling sleeve (11) is mounted rotationally in a housing (18) and is fixed in a defined rotational position by a latching element in the housing (18), which latching element is loaded (34) radially by a spring element. Upon forcible rotations of the cylinder core, which characterize an overloading situation, the latching element releases the freewheeling sleeve (11). An output element which brings about the desired functions in the vehicle is also located in the housing, as is, furthermore, a coupling element which is rotationally fixed to the output element, is under a radial resetting force and can be displaced radially.

Abstract: A lock device includes an actuating lever pivotally engaged in a lock housing for actuating a deadbolt of a latch device, two rotary mechanisms pivotally engaged in the housing and each having a rotary member pivotally engaged in a casing for coupling to an outdoor handle and an indoor handle, and the rotary member of one of the rotary mechanisms is secured to the casing for allowing the rotary member and the casing of the rotary mechanism to be rotated relative to the lock housing with the indoor handle only, and for preventing the outdoor handle from being brutally rotated by the unauthorized persons and for preventing the lock device from being destroyed or damaged by the unauthorized persons.

Abstract: The present invention provides for a handle set for a lock with a latch, the handle set having an authentication circuit and actuator in the interior handle that allow access to authenticated transponders. The present invention also provides a device and method for transmitting a rotational movement and force in an electronic lock, wherein the transmission takes place in a coupled state and not in a decoupled state and wherein the transmission of force does not damage an actuator that requires little energy to change between the coupled and decoupled states. The handle set can include a coupling cartridge that can be easily handed. The electronic lock can be retrofitted in installed mortise locks and used with cylindrical locks. The electronic lock can include a security feature that prohibits the electronic lock from changing between the coupled and decoupled states.

Abstract: A clutch mechanism permits a pulling movement to be transferred or not to the bolt of a lock when turning the internal or external handles attached to separate square-section shafts belonging to clutch elements and which can have independent rotation or they can do so integrally. A first clutch element connected to the outside handle possesses a prismatic projection with a radial orifice into which fits a pulling pin assisted by a spring and which is able to be displaced in order to be introduced into a slot of a second clutch element. The movement is controlled by a motor with a worm-screw linked to a spring which can displace a thruster rocker arm which makes contact with the pulling pin. The mechanism also includes an emergency device having a rod and another spring linked to the thruster rocker arm.

Abstract: There is disclosed a key required to have a reduced mechanical strength. When an authentic key is inserted into the keyway in a locking device, only a plunger member starts to move from a standby position toward an operative position. When the plunger member is pushed to the operative position, an operating lever located in the locked position swings to the unlocked position. The operating lever unlocks a locking mechanism that is in a locked state. When an inauthentic key is inserted in the keyway, the plunger member and sleeve member move together to the operative position. The operating lever in the locked position does not swing. Thus, the operating lever maintains the body portion of the locking mechanism locked.

Abstract: A press-buckled lock having a press buckle is used so that the operation of locking and unlocking can be performed rapidly. By pressing the buckle, the door can be locked rapidly. When the inner handle is rotated, the press buckle is separated rapidly to unlock. Other than making the operation easy, the installation of the press buckle at the inner handle of a lock will reduce the manufacturing cost and cause the operation to be easy. Thereby the cost is reduced. By pressing the press buckle, a lock can locked rapidly; when rotating the inner handle or inserting a specific key into the lock core, the press buckle will separate rapidly so as to unlock the lock; thus, the press buckle in the lock has the effect of controlling the locking and unlocking operation rapidly.

Abstract: An electronic door locking apparatus having a mortise lock including dead bolt and latch bolt installed therein, which is able to easily open a door from the outside by inserting a metal card having a magnet installed inside if a power source such as a dry battery is not supplied or if the locking apparatus is not useable due to other mechanical defects, and also able to perform a lock function since a dead bolt is locked if a door handle of an outer unit is rotated upwards when there are defects in a driving motor or electronic components.

Abstract: A lock includes inside and outside handles mounted rotatably on a lock housing unit, a key-operated lockset mounted to the outside handle, a rotary knob mounted to the inside handle, a handle-connecting rod co-rotatable with the inside handle, a driven seat co-rotatable with the handle-connecting rod, a lock-connecting rod interconnecting the lockset and the rotary knob, and an engaging plate disposed movably within a slot in the driven seat. The lock-connecting rod is rotatable to move the engaging plate between a connection position whereat the engaging plate projects from the driven seat so as to allow for co-rotation of the outside handle with the handle-connecting rod, and a retracted position whereat the engaging plate is retracted into the driven seat so as to prevent co-rotation of the outside handle with the handle-connecting rod.

Abstract: A lock includes a body, a wheel, an outside spindle, and a locking plug. The outside spindle includes a front end having an extension not in contact with a circumferential wall defining a through-hole of the wheel. When the locking plug is in an unblocking position allowing retraction operation of a latch bolt, the front end of the outside spindle is engaged with the wheel to allow joint rotation of the outside spindle and the wheel. When the locking plug is moved from the unblocking position to the blocking position not allowing retraction operation of the latch bolt, movement of a push member pushes the front end of the outside spindle away from the through-hole of the wheel such that the front end of the outside spindle is disengaged from the circumferential wall of the through-hole of the wheel, thereby disengaging the outside spindle from the wheel.

Abstract: Improvements for an engaging mechanism for locks, wherein a spindle (6b) of the radial actuator (6) has an articulated connection to the tip of a first elastic arm (13), which elastic arm is radially fixed at its other end in an axis (14) that is mounted with freedom to turn, and that one end of a second elastic arm (15) is radially fixed in this axis (14) with a 90° difference in rotation, the second elastic arm having its other end meshing with the spiral thread of an endless screw (16), which forms the output axis of an electric motor (17) that turns in both directions of rotation and is oriented transversely to said freely rotating axis (14).

Abstract: A lock, such as a mortise lock, for a door. The lock comprises a locking cylinder that can be inserted into a door leaf and a shaft having two sections, each section of the shaft having a handle at the end, preferably a rotary knob or a standard door handle and being actively interconnected by a coupling after recognition of an authorisation code. The lock can be used for various applications as a result of its construction design, with a standard locking cylinder in various doors and that it allows, a simple, reliable, low-energy actuation of the locking mechanism. To achieve this, the coupling (11) comprises at least two, preferably four or more rolling members (17) that are guided in recesses (18) of a second part (10) of a first section (5) of the shaft (3).

Abstract: An electric lock with magnetic support of the coupling element, comprising a locking element engaging a selvage, a decoding assembly for a code bearing component, an actuation element, connected to an internal handle and associated with the locking element, and a second actuation element, connected to an external handle and coupled to the locking element by way of an electromechanical device. The actuation element comprises a stem connected to the external handle with a rotating plate and a contrast plate, at an end resting freely on a rotatable sleeve, coupled to the locking element and provided with notches; an electric motor and a slider, aligned with the notches actuatable to perform translational motion, and a magnet supporting a coupling element adapted to enter the notches to rigidly couple to each other the plate, the contrast plate and the sleeve.

Abstract: An electric lock with multiple-function spring, with a locking element, a decoding assembly for a code bearing component, a first actuation element connected to an internal handle, and a second actuation element connected to an external handle both coupled to the locking element by an electromechanical device; the second actuation element comprises a protruding stem that ends with a rotating plate, a rotatable contrast plate that rests freely on a rotatable sleeve coupled to the locking element, the plates and the sleeve being provided with respective notches; the electromechanical device has a motor with a worm screw on its shaft, a slider, coupled to the screw through a spring with one end fixed on the lock body, the central portion engaged on the slider, and the opposite end accommodated between two crests of the screw, and a coupling element for entering notches to couple plates and sleeve.

Abstract: An electronic deadbolt lock arrangement including a lock having a bolt movable between locked and unlocked conditions. The lock includes a manual control and a power drive to operate the lock that are connected by a decouplable transmission enabling the lock to be operated by either the manual control or the power drive. The transmission includes two concentric cylinders that can be locked or unlocked for relative rotational movement, with manual operation of the lock decoupling the power drive. A biased pin engages co-operating apertures in the cylinders to lock the two cylinders to each other. A cam operated by the manual drive acts against the pin to cause the two cylinders to be decoupled.

Abstract: The doorknob with a lock has a bolt assembly, a lock activating assembly, an outer doorknob assembly and an inner doorknob assembly. The bolt assembly is mounted in a door and has a bolt head and a rotatable plug. The lock activating assembly has a base, a head, an outer clutch plate and an inner clutch plate. The base and the head respectively have an annular longitudinal protrusion, and the base is covered by the annular longitudinal protrusion. Each annular longitudinal protrusion has two opposite gaps. The outer and inner clutch plates respectively have a long protruding end, a short end, a longitudinal slot and a transverse slot. The ends of the clutch plates are slidably mounted in the gaps in the annular longitudinal protrusion, and the long protruding ends selectively engage the gaps in the annular longitudinal protrusion to lock and unlock the door.

Abstract: A lock system includes a cylindrical door lock having a latching spindle and an opening spindle which are concentrically oriented, and a wireless communication system to transmit signals indicating the relative positions of the latching spindle and the opening spindle. A door lock assembly can include a lock mechanism for placing the lock assembly into an unlocked state or a locked state, an electrically controlled actuator assembly to control the lock mechanism, a transceiver coupled to the actuator assembly, and a communication device to communicate over a two-way wireless network with the electrically controlled actuator. A retrofit actuator assembly adapted to be mounted on an existing lock to control a locking mechanism of the lock, and a two-way communication device to control the retrofit actuator assembly and to receive signals from the retrofit actuator assembly indicating a state of the locking mechanism.

Abstract: A lock includes a control knob with a keyway and a receiving space defined in a distal end face of the control knob to correspond to the receiving hole of the sliding seat. The sliding block is able to selectively be received at a joint of the control knob and the sliding block to allow movement of the control knob to drive the latch to move accordingly.

Abstract: This mechanism is intended for being located in the inner escutcheon of the lock and its purpose is to minimize the forces transmitted, thereby preventing premature wear, as well as being able to be adaptable to any lock. Its structure permits to minimize the turning of the handle or outer operating knob under no load. The outer escutcheon (3) holds the key reader (4) and an outer knob (5) while the inner escutcheon (6) contains the electronic control circuit (7) powered by batteries (8), the clutch mechanism (9) and an inner operating knob (10). Exiting from the clutch mechanism (9) are two concentric shafts (21, 26), one of which acts on the tumbler (2) of the lock and the other (26) which rotates freely in its interior and to which the outer knob (5) is connected. A validated key activates an electric motor (51) or similar which displaces a collar (28) causing the clutch element (27) to bring both concentric shafts (21, 26) together temporarily, forming a single unit and permitting the opening of the lock.

Abstract: Clutch mechanism for locks, which is composed of an interior axis (1), an exterior axis (2), a static body (3), a radial pin (4), a radial catch (5) and a radial actuator (6); said interior (1) and exterior (2) axes and body (3) compose a coaxial assembly where the exterior axis (2) penetrates the interior axis (1) and both are installed with a rotational adjustment in the static body (3), the set of radial pin (4) and radial catch (5) is installed between the actuator (6) and a radial spring (7) which acts between the catch (5) and the base of the housing (2a) of the exterior axis (2); whose pin (4) and catch (5) are dimensioned in such a way that each will be able to be moved between the circumferences of the exterior diameter of the axis (2) and the interior diameter of the axis (1); the radial actuator (6) is composed of a curved plate (6a) and by, at least, one rod (6b), whose plate (6a) is located in an annular depression (8) between the interior axis (1) and static body (3), extending in a circumferent

Abstract: A lock system for a door. The lock system includes a clutch mechanism and a lockset with a lockable latch and actuator for operating the latch. The clutch mechanism includes an input cam, an output cam, and an engagement pin having an axis and being dimensioned and configured for axial movement between a first position, in which the engagement pin engages both the input and output cams so that the input and output cams rotate synchronously, and a second position, which allows independent rotational movement of the input cam and the output cam.

Abstract: A cylindrical lock arrangement of the kind having a cylindrical housing attached to a door and a lock cylinder with lever tumblers provided to cooperate with a lock device, whereby the lock device is arranged to be actuated via a carrier provided to the cylinder lock. The invention has a connection device for transmission of force from the lock cylinder to the carrier is provided to be axially displaced in relation to the lock cylinder from a neutral position and in direction towards this during rotation of the lock cylinder with a fitting key. The connection device is provided to be brought to an active position in friction engagement with the carrier not until after the axial displacement from the neutral position, after which locking and unlocking respectively of the lock device is performed by further rotation of the lock cylinder by means of the key.

Abstract: Clutch device for locks which consists of an interior axis, an exterior axis, a frame or static body, an elastic element, a radial trigger, a radial trigger lock and a radial actuator; wherein: the interior axis, exterior axis and static body comprise a coaxial assembly in which the exterior axis penetrates an axial cavity of the interior axis while both axes are assembled within the static body, the elastic element is in a fixed relative position with respect to the static body and in an annular housing defined between this static body and the interior axis, the radial trigger is lodged in a movable position within the interior axis and has a length equal to the difference between the exterior diameter of the exterior axis and the interior diameter of the static body, the radial trigger lock is installed within the exterior axis with its tip in the exterior diameter of this exterior axis and with its tail end placed against one end of a radial compression spring.

Abstract: A lock mechanism has a housing and a latch extending from the housing. The latch has an extended position and a retracted position. The mechanism includes apparatus for biasing the latch to the extended position, apparatus for defining a locked mode and an unlocked mode, and apparatus including a clutch for transferring an operator input motion to move the latch to the retracted position in the unlocked mode. The clutch includes a cam surface and a cam follower. A spring biases the cam follower toward the cam surface and a second override spring which biases the cam follower to compensate for any off-center relationship due to wear, excessive force and/or assembly misalignment and to prevent jamming.

Abstract: A lockset assembly comprises an inner handle assembly, a chassis, a latch assembly, an outer spindle, an outer handle assembly of cylinder type, and an outer handle assembly of interchangeable core type. One of the outer handle assembly of cylinder type and the outer handle assembly of interchangeable core type is releasably engaged with the outer spindle to allow an interchange between a cylinder and an interchangeable core via an interchange between the outer handle assembly of cylinder type and the outer handle assembly of interchangeable core type without the need of replacement of a whole lockset.

Abstract: A lock mechanism has a housing and a latch extending from the housing. The latch has an extended position and a retracted position. The mechanism includes apparatus for biasing the latch to the extended position, apparatus for defining a locked mode and an unlocked mode, and apparatus including a clutch for transferring an operator input motion to move the latch to the retracted position in the unlocked mode. The clutch includes a cam surface and a cam follower. A spring biases the cam follower toward the cam surface and a second override spring which biases the cam follower to compensate for any off-center relationship due to wear, excessive force and/or assembly misalignment and to prevent jamming.

Abstract: An outside handle assembly of a lock includes an outside lever handle, an outside handle spindle secured to the outside lever handle to rotate therewith and including a first slot defined in a periphery thereof, and an actuating spindle mounted in the outside handle spindle and operably connected to a retractor. The actuating spindle includes a second slot aligned with the first slot of the outside handle spindle. A catch is mounted in the actuating spindle and has a first end pivoted to the actuating spindle and a second end. A tapping plate is slidably mounted in the actuating spindle and connected to the tail piece to move therewith. When the lock is in an unlocked status, the outside handle spindle and the actuating spindle rotate synchronously, as the second end of the catch extends through the second slot of the actuating spindle into the first slot of the outside handle spindle.

Abstract: The apparatus is a torque limiting spindle for lock mechanisms. The interconnection between two parts of the spindle of the lock is a detent mechanism which disengages the two sections if excessive torque is applied. The apparatus has a first section of the spindle with grooves on a cylindrical surface and dowel pins held into the grooves by one or more springs. The second section of the spindle has fingers which engage the dowel pins to impart rotational motion to the first spindle section. If the torque applied between the two sections exceeds the limit determined by the springs, the dowel pins move out of the grooves to prevent damage to the mechanism.

Abstract: A lock sub-assembly for a lock which is mainly situated at an exterior side of the lock. The lock sub-assembly comprises an exterior hub configured to rotate together with an exterior long handle and be fixed to an exterior side of a lock chassis, a handle spindle rotatably received within the exterior hub, a restricting block fixedly secured within the exterior hub, the restricting block disposed to. effectuate a limited turning movement of the handle spindle with respect to the exterior hub, an actuating spindle extending through both the restricting block and the handle spindle and having a roll-back portion adapted to operate a retractor, and a mechanism for releasably coupling the actuating spindle to the handle spindle. With this construction, when the actuating spindle and the handle spindle are not rotatably coupled together, the exterior long handle together with the handle spindle performs such a turning movement that no other constituting elements are affected thereby.

Abstract: In a door lock having a latch bolt selectively retractable by a rotatable driver spindle, the driver spindle being rotatable by operation of an outside manual lever associated with an outside chassis assembly or by operation of an inside manual lever associated with an inside chassis assembly, a lost motion mechanism is provided between the driver spindle and the inside chassis assembly so that rotational movement of the driver spindle is not transmitted to the inside lever. An interconnect mechanism connects the inside lever to a deadbolt operating assembly whereby operation of the inside lever retracts both the latch bolt and the deadbolt. The lost motion mechanism includes a driven spindle located within an axially extending bore in a spindle core and having an opening for receiving an end of the driver spindle, the spindle core being mechanically linked to the inside lever.

Abstract: A door lever assembly having a locked and an unlocked position includes a trim housing and a lever handle and cam rotatably connected to the trim housing. A rotatable shaft extends between the lever handle and the cam, with the shaft defining a connection groove therethrough to provide access to a shaft interior. The shaft interior is configured to accept a pin for connecting the cam and the shaft. This pin can be wedgably disconnected following controlled slippage of frictional wedge surfaces in response to excessive force applied to rotate the cam.

Abstract: This assembly includes a steering shaft (101) which can move in rotation in a column body (102) and includes an anti-theft bolt (104) mechanism (103) which can move between a retracted position and an active anti-theft position. The shaft includes two shaft portions (105, 106), one (105) carrying a steering wheel and the other (106) being connected to the rest of a vehicle steering mechanism. The portions are connected by a disengagable linkage mechanism (108) which can move, under the control of the anti-theft mechanism, between an active position for coupling the two shaft portions and a retracted anti-theft position freeing the two shaft portions from each other so that the shaft portion (105) carrying the steering wheel can rotate freely with respect to the other shaft portion (106). The corresponding end zones (105a, 106a) of the shaft portions are arranged one around the other, and the disengagable linkage mechanism (108) is mounted so as to move around the shaft portion carrying the steering wheel.

Abstract: A torque-releasable door handle assembly is provided for operating a door-latching system. The door handle assembly includes a handle shell formed to include a hollow interior cavity having front and rear openings in the handle shell, a lock cylinder mounted in the hollow interior cavity to position its keyway opening in the front opening of the handle shell, and a torque-release mechanism interconnecting the handle shell and the lock cylinder. The lock cylinder is formed to include an axially extending, radially outwardly opening groove located in the hollow interior cavity. The torque-releasable mechanism normally extends into the groove to establish a driving connection between the handle shell and the lock cylinder. The torque-release mechanism is configured to disengage the groove temporarily to break the driving connection in response to the application of at least a predetermined amount of torque to a lever handle appended to the handle shell.

Abstract: A torque-releasable door handle assembly is provided for normally rotating a bolt-retracting sleeve to operate a door latching system. The door handle assembly includes a body for coupling to the bolt-retracting sleeve and a handle shell mounted on the body for rotational movement thereabout. A drive assembly is provided for yieldably connecting the body and handle shell to establish a normal driving connection so that the body is rotated normally to rotate the bolt-retracting sleeve and operate the door latching system in response to rotation of the handle shell. The drive assembly is configured to release the normal driving connection between the body and the handle shell in response to application of a rotation-inducing torque to the handle shell in excess of a predetermined amount. In preferred embodiments, the drive assembly includes a matched pair of mateable female and male drive rings positioned in a space between an exterior surface of the body and an interior surface of the handle shell.

Abstract: An improved force immune door knob/latch is provided which, by use of resiliently-biased ratcheting means, is rendered immune to force resulting from the application of excess torque to the door knob. These resiliently-biased ratcheting means are such that their biasing force is oriented in a direction perpendicular to the longitudinal axis of the door latch shaft.

Abstract: The lock housing has a slot in a top wall via which a coded card key can be inserted to bring into alignment coded magnetic areas on the card with magnetically responsive elements of the lock to unlock the locking mechanism and enable rotation of either a knob or lever arm to open the door. The card moves a spring actuator against a coupling spline to engage it with a spindle spline carried by a shaft interconnected with the knob or lever arm handle. The sliding coupling spline is integral with parts which interrelate with the door lock mechanism such that rotation of the knob or lever arm will now effect release of the door locking mechanism. When the card is fully inserted, the mechanism is maintained in the unlocked condition and the card may be released to turn the knob or handle with the same hand. Spring-loaded members separate the coupling and spindle splines as the magnetic card key is withdrawn from the housing slot.

Abstract: A shield is rotatably mounted to a threaded element of the closure on an axis coincident with the axis of the threaded element, so that the shield impedes access to the threaded element. The shield can be removed from the threaded element or connected to the threaded element only upon actuation of the closure by an appropriate key. Absent such actuation, the threaded element cannot be rotated for disengagement from the conduit by rotating the shield. The closure is protected against attempts to disengage it from the conduit by bonding the shield to the threaded element with an adhesive and rotating the shield.

Abstract: A mechanical magnetic key operated door lock structure particularly adapted for use in hotel locksets. An occupancy indicator is incorporated in the lock structure to indicate that the lockset is locked from the inside, thus insuring privacy for the hotel guest. In addition, means operable from outside the lock structure is provided for changing the combination of the lock so that a newly arriving guest may be provided with a key having a different combination from that used by the previous guest.

Abstract: A door lock structure adapted to be actuated by a magnetic card key to operate a conventional cylindrical door lock with substantially no modification to such lock. A housing containing the magnetically operated elements of the lock is mounted, along with a modified knob, on the conventional spindle of the lockset in lieu of the usual door knob. The housing is freely rotatable relative to the lockset spindle to prevent wrenching. The latchbolt retractor of the lockset is actuated in the normal manner to unlock the lockset by rotating a conventional driver bar. The driver bar in this structure is rotated by registering interengaging elements carried by the driver bar and a slide which is actuated by a properly coded magnetic card key. The modified knob may be freely rotatable on the spindle or may be fixed thereto.

Abstract: A lock housing is provided for mounting upon or in a door, but which may also be mounted upon or in a door frame. Latch and bolt bars disposed in side-by-side relation are supported from the housing for lengthwise extension and retraction relative thereto. A locking pawl is mounted on a shaft oscillatably supported in the housing and extending transversely of the inner ends of the latch and bolt bars and the pawl is swingable into and out of position behind the inner ends of the bars when the latter are in their extended positions. A first pair of solenoids are selectively operative on 12 volt D.C. and 110 or 12 volt A.C. current to shift the shaft to a position with the pawl in an unlocked position and the third solenoid is operative to shift the shaft to a position with the locking pawl in the locked position.