Abstract: A pet kennel and method of construction is disclosed herein. In an embodiment, the pet kennel includes a body and a door assembly. The body has an interior space configured for a pet and includes at least one aperture sized and shaped for the pet. The door assembly is attached to the body at the aperture. The door assembly includes a latching part pivotally attached to a hinge part. The latching part includes a latching mechanism configured to lock and unlock the door assembly. The hinge part is fixedly attached to the body so as to substantially surround a perimeter of the aperture.

Abstract: A roller lifter includes a lifter body having a cylindrical peripheral wall and a roller rotatably mounted on the lifter body via a shaft member and brought into contact with a cam. The peripheral wall has an outer periphery formed with a sliding surface which is slid on an inner wall of a cylinder. The lifter body has a rotation stopper formed by outwardly protruding a part of the peripheral wall, and an opening formed in another part of the peripheral wall which another part is radially opposed to the rotation stopper. The opening is open so that the rotation stopper oppositely faces the opening.

Abstract: A modular rotary valve apparatus includes: a plurality of separate valve barrels coupled to each other and arranged end-to-end along an axis so as to define a valve shaft, each valve barrel having an annular peripheral surface extending between forward and aft end faces, and an aperture extending transversely therethrough communicating with the peripheral surface on opposite sides.

Abstract: Locks for use with pest-control devices such as bait stations or other loadable devices, kits that include a lock and key, and pest control devices that include a lock.

Abstract: Locks for use with pest-control devices such as bait stations or other loadable devices, kits that include a lock and key, and pest control devices that include a lock.

Abstract: A tubular lock has a casing, a key pin seat, a driving pin seat, at least one positioning assembly, a side pin seat, at least one side positioning assembly and a fastening assembly. The positioning assembly is mounted axially in the key pin seat and is mounted through the driving pin seat. The side positioning assembly is mounted transversely through the casing and the side pin seat. With the installation of the side positioning assembly, the tubular lock can increase the permutation combinations of all the positioning assemblies. With the positioning assembly and the side positioning assembly operating in perpendicular directions to each other, the tubular lock can increase the difficulty of unlocking. With the both features, the tubular lock can enhance safety.

Abstract: The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug.

Abstract: In certain embodiments, the present invention includes a method for engaging with a projection of a first component to removably secure a second component to the first component. The method includes positioning a rotatable member of the second component in a first rotational orientation such that the rotatable member is allowed to receive, via a gap in a perimeter of the rotatable member, the projection of the first component. The method also includes positioning the rotatable member in a second rotational orientation such that the rotatable member is prevented from disengaging with the projection of the first component to secure the second component to the first component. The method also includes returning the rotatable member to the first rotational orientation such that the rotatable member is allowed to release, via the gap in the perimeter, the projection of the first component to remove the second component from the first component.

Abstract: A lock device for use with a key is disclosed. The lock device includes a locking spindle including a plurality of locking spindle bores and a passage extending axially along an axial length of the locking spindle, and a driver structure including a plurality of driver structure bores. An interface between the driver structure and the locking spindle forms a shear line. The lock device also includes a plurality of combination pins in the plurality of locking spindle bores, and a plurality of driver pins in the driver structure bores in the driver structure, the plurality of driver pins being respectively associated with the plurality of combination pins.

Abstract: An axial spring balancing pin tumbler lock includes a cylindrical shell, a plug rotationally disposed within the shell and rotatable by a tubular key. The shell contains a plurality of first pin bores annularly and evenly defined to the axis of the shell for receiving first pins and first springs. The plug has a through aperture for engaging with a elongated spindle, a key bore coaxially defined on front end for receiving the tubular key, a plurality of third pin bores annularly and evenly defined on front end with same depth of the key bore for receiving third pins, and a plurality of second pin bores defined on rear end of the plug for receiving second pins and second springs. Each second pin may contacts the tubular key and one of third pins simultaneously.

Abstract: A cylinder lock is provided. The lock includes a rotor assembly (17) having a combination post (12) as a core. The combination post (12) has combination holes arranged thereon which define the combination of the lock. The rotor assembly (17) includes locking bars having pins (15) directed radially towards the combination post (12). The locking bars are displaceable in an axial position by an appropriately coded key until each pin (15) is directed towards a respective combination hole. Turning the key causes the rotor assembly (17) to rotate. At various rotational positions, the locking bars are displaced radially causing the pins (15) to engage their respective combination holes. The combination post (12) can be provided with parallel combination holes. Furthermore, the combination post (12) can be removable in order to replace the combination post (12) with another post having different combination values, thereby changing the combination of the lock.

Abstract: A tubular radial pin tumbler lock is described. The radial pin tumbler lock has an outer shell, an inner shell housed in the outer shell, and a spindle housed in the inner shell. The spindle has a spindle head with an uneven number of irregular sides. A plurality of radial locking pins are arranged radially from the spindle. A crown on the spindle encases the locking pins. An anti-drill feature is included on the spindle head. An annular space between the inner shell and the spindle head allows access to the radial locking pins for operating the radial pin tumbler lock.

Abstract: A combination writing instrument and handcuff accessory has a housing containing an elongated writing element with a writing tip. The housing has at its distal end a key suitable for opening a handcuff. The key has a longitudinal tunnel sized to allow passage of the writing tip. The housing also has a mechanism for reciprocating the writing element between a retracted and an extended position. The writing tip in the extended position extends (a) through the tunnel, and (b) outside the housing a predetermined distance. The portion of the writing element extending from the key can be inserted into a double lock hole of a handcuff.

Abstract: A lock device for use with a key is disclosed. The lock device includes a locking spindle including a plurality of locking spindle bores and a passage extending axially along an axial length of the locking spindle, and a driver structure including a plurality of driver structure bores. An interface between the driver structure and the locking spindle forms a shear line. The lock device also includes a plurality of combination pins in the plurality of locking spindle bores, and a plurality of driver pins in the driver structure bores in the driver structure, the plurality of driver pins being respectively associated with the plurality of combination pins.

Abstract: A resettable tumbler lock includes: a lock housing; a sleeve mounted rotatably in the lock housing and formed with a plurality of tumbler bores; a cylindrical latch-connecting part mounted rotatably in the lock housing and formed with a plurality of tumbler holes and a plurality of blind holes; and a plurality of spring-biased tumbler units. The sleeve is rotatable relative to the latch-connecting part between first and second angular positions. At least one of the tumbler bores in the sleeve has an axial projection that does not coincide with that of an aligned one of the tumbler holes in the latch-connecting part when the sleeve is disposed at a predetermined position between the first and second angular positions.

Abstract: A latch has a bushing which has at least one bushing projection or means for preventing insertion of an unauthorized tool to rotate a latch actuator of the latch. Only a key having an outer key recess which can mate with bushing projection on the bushing permits insertion of the key. The cap subassembly of the latch is provided with projections which are of a size and so positioned as to correspond with the internal recesses of the key so as to allow the cap subassembly to enter into the bore of the key and permit a mating engagement of internal recesses on the key and projections on the cap subassembly. Because cap portion rotates freely on top of the cap subassembly which is the part of the cap driven by the key, the arrangement makes it impossible, or at least very difficult, to rotate the shaft and in turn the pawl by means of a tool which rotates the cap portion.

Abstract: In one embodiment, a port cover for a system integrated into a structure for injection of a material into one or more cavities in the structure includes a base for coupling to the structure. The base includes one or more ports for injection of the material into the one or more cavities in the structure and one or more slots. The port cover also includes a cover for removably coupling to the base, the cover including one or more tabs each adapted to engage with a corresponding slot of the base. The cover also includes a locking mechanism for removably securing the cover to the base to prevent unauthorized access to the one or more ports. The locking mechanism is adapted to engage a projection of the base to removably secure the one or more tabs of the cover in engagement with the one or more corresponding slots of the base to removably secure the cover to the base to prevent unauthorized access to the one or more ports.

Abstract: In certain embodiments, a port cover for a system integrated into a structure for injection of a material into one or more cavities in the structure includes a base for coupling to the structure. The base comprises one or more ports for injection of the material into the one or more cavities in the structure, one or more slots, and one or more channels each associated with a corresponding slot. A cover for removably coupling to the base to selectively control access to the system includes one or more tabs each adapted to engage with a corresponding slot of the base. The one or more tabs of the cover are adapted to, after sliding downward to disengage from the one or more corresponding slots, move outward substantially perpendicular to the front surface of the base through the one or more corresponding channels to remove the cover from the base. When the cover is removed from the base, the system may be accessed for purposes of injection of the material into the one or more cavities in the structure.

Abstract: A latch has a bushing which has at least one bushing projection or means for preventing insertion of an unauthorized tool to rotate a latch actuator of the latch. Only a key having an outer key recess which can mate with bushing projection on the bushing permits insertion of the key. The cap subassembly of the latch is provided with projections which are of a size and so positioned as to correspond with the internal recesses of the key so as to allow the cap subassembly to enter into the bore of the key and permit a mating engagement of internal recesses on the key and projections on the cap subassembly. Because cap portion rotates freely on top of the cap subassembly which is the part of the cap driven by the key, the arrangement makes it impossible, or at least very difficult, to rotate the shaft and in turn the pawl by means of a tool which rotates the cap portion.

Abstract: A key assembly includes a key, a cap and a fastener to selectively secure the cap to the key. The cap may include an opening for receiving a key ring, or other structure, therethrough. In one embodiment, the key includes a grip, and the cap and grip cooperate to enclose the key when the cap is secured in place.

Abstract: In certain embodiments, the present invention includes a key for engaging a locking mechanism for a port cover for use in a system integrated into a structure for injection of a material into one or more cavities in the structure. The locking mechanism is for removably securing a cover of the port cover to a base of the port cover that is coupled to the structure and includes one or more ports for injecting material into the one or more cavities in the structure. The key is adapted to engage with the locking mechanism, and orient the locking mechanism such that the locking mechanism engages with a projection of the base to removably secure one or more tabs of the cover in engagement with one or more corresponding slots of the base to removably secure the cover to the base to prevent unauthorized access to the one or more ports.

Abstract: In certain embodiments, the present invention includes a method for protecting from unauthorized access one or more ports of a system integrated into a structure for injection of a material into one or more cavities in the structure. The method includes coupling a base to the structure, the base including the one or more ports for injection of the material into the one or more cavities in the structure and one or more slots. The method further includes removably coupling a cover to the base to prevent unauthorized access to the one or more ports, the cover comprising one or more tabs each adapted to engage with a corresponding slot of the base.

Abstract: A lock device for a box includes a locking shaft, a lock shell, a lock core, a limiting unit, and a key. The lock shell has a surrounding shell wall that confines a core-receiving space, and that is formed with an insert hole in spatial communication with the core-receiving space to permit removable extension of the locking shaft into the core-receiving space. The lock core is disposed movably in the core-receiving space, and has a surrounding core wall that confines a key compartment and that is formed with a shaft engaging unit. The lock core is rotatable in the lock shell between locking position and unlocking positions. The limiting unit limits rotation of the lock core in the lock shell. The key is inserted removably into the key compartment and is operable so as to drive rotation of the lock core between the locking and unlocking positions.

Abstract: A master key includes a key base having a key handle, a fixing seat and a sleeve, all of which are connected to each other integrally. The fixing seat has a plurality of angularly spaced apart spring holes having respective key springs. A key tube includes a large cross-section tube section inserted into the sleeve, and a small cross-section tube section fixed to the fixing seat. The large tube section includes a plurality of angularly spaced apart long and short grooves. The long grooves are aligned with the respective spring holes to receive slide pieces, and the short grooves have respective shoulder faces. A tubular lock to be used with the master key is also disclosed.

Abstract: A tubular lock unit has a lock and key. An upper pin seat and a lower pin seat with multiple pins are respectively mounted in the lock. A shaft is inserted into the lower pin seat and connected to the upper pin seat. The upper pin seat has an annular keyway and a slot is defined in a sidewall. The key has a barrel and a protrusion extending out of the barrel. When the key is inserted into the keyway, the protrusion is inserted into the slot and a lower end of the protrusion meets with an upper end of the lower pin seat to rotate the upper pin seat. When an improper key is inserted into the keyway and rotated, at least one of the pins will remain extended into the upper pin seat to prevent rotation.

Abstract: A handcuff key “universal” shank and paddle for a common handcuff is attached, in-line, with an enlarged shank extension and bow or grip of a size and shape allowing its use while wearing heavy gloves. The shank extension is sufficiently long to accommodate heavily gloved fingers between the bow or grip and the universal shank and paddle. The enlarged bow or grip of the key is generally circular to fit the palm of a heavily gloved hand, and having a variety of apertures for key rings. The enlarged shank extension defines concave finger-holds for the gloved index and middle finger. The extended shank extends outward from the hand, while the heel of the glove hand engages the rounded rear surface of the bow or grip. The double-lock engaging stem is radially mounted about 60 degrees from the centerline. The key with extended shank is reversed for double-locking.

Abstract: A Child Proof Key for Barrel-housed Gun Lock is disclosed. Also disclosed object of the present invention to provide a Child Proof Key for Barrel-housed Gun Lock. The lock includes a handle defined by a slot formed along its length for acceptance of the shaft. The shaft is hinged at one end which permits the shaft to be stowed within the shaft slot. The shaft terminates in a key socket at its head for engagement with the keyed head of a bore-housed gun lock. The key further includes a bushing along the length of the shaft for centering the key socket within the barrel of the weapon, and further to identify the size by indicia inscribable thereon (or other desirable indicia). Very importantly, the shaft slot formed in the handle is defined by a shoulder and a shaft bore, with the gap between the two shoulders being slightly smaller than the diameter of the shaft such that the shaft snaps into the slot when stowed.

Abstract: The invention provides a pair of cuff locks joined by a universal joint and linkage system which provides for 360 relative rotation between the cuffs as well as allow the cuffs to be folded together into a compact position. The invention further provides for a push button cylinder lock which includes a rotatable plug and a fixed plug each having a plurality of aligned bores for receiving one or more tumbler pins. The push button cylinder lock further includes a non-rotatable push button shaft which is sildably mounted within the housing. One or more retaining pins engage locking indents of the push button shaft.

Abstract: An improved tubular-type locking cylinder and dedicated key that provides for both theft- and trip-resistant tumbler pin assemblies, wherein the locking cylinder is comprised of an outer housing, a main base, a locking cylinder shaft, and a plurality of tumbler pin assemblies. The improved features are that a detent slot is formed in the interior wall along the locking cylinder shaft recess through the center of the main base body. The locking cylinder shaft consists of a bore through the center of the shaft member up to its top extremity, a movably disposed catch bolt and spring, and a plug obstructing the opening of the bore. A horizontal passage for seating a steel ball is formed in the shaft member at the lower side of a tumbler pin disc. A locating pin is horizontally situated near the upper extremity at one side of the catch bolt. A keyway slot is formed in the shaft member that is contiguous to the upper end of the bore.

Abstract: A lock furnished with a replaceable lock core, in which the inner lock assembly includes a lock core, a sleeve, and a control ring; the inner lock assembly is mounted in a fixed lock casing; the inner lock assembly and the lock casing are assembled together by means of a catch pin; the key normally used for unlocking the lock can only be turned clockwise without hindering the catching function between he inner lock assembly and the lock casing; when an inner lock assembly is replaced, the key should be inserted for unlocking, and then turned counter-clockwise so as to release the catching function between the lock casing and the inner lock assembly; then, pull the key outwards so as to pull out the inner lock assembly simultaneously, and the replacement of a new lock core for the lock casing is done simply.

Abstract: A handcuff key light illuminates the keyhole of a handcuff. The handcuff key light includes a cylindrical handcuff operating member which is molded into a body including at least one light source for providing light along the cylindrical handcuff operating member. The lightsource is selectively connected to an electrical power source to provide electrical power to the light source to illuminate toward the handcuff operating member.

Abstract: A lock with two layers of lock mechanism, which comprises a body casing, an upper lock body, a lower lock body, a connection plate and a key; the chamber of the body casing is used for mounting the two lock bodies; the two lock bodies are connected together with the connection plate; the center of the upper lock body has a key hole for receiving a flat key to plug into a key hole of the lower lock body; the other end of the key has a cylindrical key, which is to be plugged into a ring-shaped key groove; when the key is pushed and turned, both the upper and lower lock bodies will be unlock simultaneously.

Abstract: A rotation restricted barrel lock and key includes a rotationally actuated barrel lock and a key for opening the lock. The key comprises a lock engaging portion rigidly attached to a handle, and a sleeve rotatably mounted on the handle shaft. The sleeve may slide axially along the shaft within preset limits. Lock actuation is characterized by rotation of the lock engaging portion of the key relative to the lock. During actuation of the lock, a set of prongs on the sleeve engages a complementary set of notches on the barrel lock, thereby non-rotatably coupling the barrel lock to the sleeve. By grasping the sleeve, the user can prevent rotation of the lock while turning the key handle, and thus actuate the lock.

Abstract: A tool is disclosed for opening tubular locks in which a tubular key is receivable. The tool includes a plurality of probes that are releasably retained and secured in a given position to align the shear points in the lock in an opening position. The probes can be ergonomically and individually manipulated and have a course and a fine adjustment, such that the shear point of each tumbler can be easily and efficiently determined. Once the shear point is determined, the probe may be fixed in the position to maintain each tumbler driver.

Abstract: A handcuff key having a shank on which is mounted a paddle offset from the end of the shank so that a portion of the shank protrudes beyond the end of the paddle. The key has a first asymmetrical gripping surface as well as a second cylindrical gripping surface. The gripping surfaces are formed of an elastomer while the offset paddle and shank are formed of metal. The key is also provided with a quick release cap which snaps over a double-lock stem extending from the key. In an alternative embodiment, the quick-release cap is provided with an offset key ring to permit the key to hang substantially vertical from an officer's uniform or key ring during storage.

Abstract: A pin tumbler mechanical lock includes an electronic component incorporated in the key which connects to an axial lead aligned to mechanically engage the spring biased contact of the key whereby in order to operate the lock both the mechanical pin tumblers and the electronic signal provided by the key are necessary.

Abstract: An axial pin tumbler lock and key assembly comprise a housing with an axial pin tumbler barrel fixed within the housing and including passages for storage of key change tumblers. A rotatable forward barrel and spindle include axial pin tumblers movable in response to the insertion of an appropriate key of the type having a hollow cylindrical barrel for engagement with the tumblers. The key includes detents on the inside surface of the cylindrical barrel and radial ribs on the outside surface thereof for actuation of the front barrel.

Abstract: A lock and a key are provided wherein the key is used in conjunction with the lock. The key has a stop bit and a series of coding bits along its shank. The stop bit and each coding bit have a leading edge and a trailing edge to provide coding of the key and to form one side of a groove. The lock has a housing having a key-actuated cogwheel assembly. The cogwheels are registered with a keyhole and are spaced for engagement by the coding bits of the key. A driven cogwheel assembly has a series of cogwheels that mesh with a corresponding key-actuated cogwheel. A lock bolt is projected and retracted between two positions by a lock bolt actuating mechanism responding to position of the stop bit and coding bits.

Abstract: A key structure with illumination function including a grip housing composed of a first and a second casing, a key plate enclosed in the grip housing and having a key head extending out of the grip housing, a cell disposed beside the key plate and a light emitting diode having two terminals extending to two electrodes of the cell. By depressing a depression button, the terminals of the light emitting diode are electrically connected with the cell to form a closed circuit so that the light emitting diode can emit a light beam to illuminate the circumference of the key hole. Accordingly, in a dim place, a user can easily use the key to unlock the lock.

Abstract: A round and flat molded device not readily identifiable as a handcuff key, which can be hidden under a wrist watch or behind a standard shirt button of a law enforcement officer or security person and which can be silently retrieved and utilized by bending the key portion partially out of the surrounding molded support ring structure with the use of the thumb, index finger and middle finger.

Abstract: An axial pin tumbler lock comprises a housing, an outer tumbler pin seat, a plurality of outer tumbler pins, an inner tumbler pin seat, and a plurality of inner tumbler pins. The smallest distance between the center of the outer tumbler pin seat and the outer edge of at least one of the outer tumbler pins is greater than the radius of the first axial hole of the housing, so as to enable the outer tumbler pin in question to be concealed by a shoulder located between the first axial hole and the second axial hole of the housing.

Abstract: The assembly is used in leftward- and rightward-retractable door units, and provides wide variations of key to prevent the assembly from being illegally unlocked. In the assembly: a left 25 and a right 28 latch plate are supported on pivots 22 and 54, respectively; a lock casing 17 connected with a thumb turn 15 has locking blades 18, 48; locking projections 30 and 31 abutting against the blade 18 are in the plates 25 and 28, respectively; an interlocking shaft 35 receiving torque transmitted from a front 6 and a rear 9 handle has a driving plate 40; a driving projection 39 abutting against the arms 37, 38 is in the plate 40; a locking hole 50 of a core 20 received in a lock casing 17 assumes a regular hexagonal shape in cross-section, provided that one of its six corners forms a curved surface 50a; a locking pin 51 extends from an inner surface of the hole 50; and, a locking projection 53 is in a center of the bottom of the core 20.

Abstract: A tool to start ignition side bar type lock cylinders in all Ford vehicles is provided and consists of using a tool which has a guide key to hold the tool in place, two tabs to cut into the face of the cylinder, a hexagonal shape at rear of tool to accept a wrench for turning the cylinder to the ON position and thus start the vehicle.

Abstract: A cylinder lock having a key insertion hole or clearance formed between a casing and a key guide member. A key for the cylinder lock is provided with a thin cylindrical member which is to be inserted into the annular key insertion hole when the key is inserted into the cylinder lock. The cylindrical member is filled at its first end section with a part of a key shank. A slider is slidably disposed inside the cylindrical member and normally located inside the second end section of the cylindrical member. The slider is formed at its tip end with a fitting projection which is to be fitted in a guiding depression formed at the tip end face of the key guide member. The key insertion hole is formed narrow or thin, corresponding to the thin cylindrical member of the key, thereby preventing a picking tool from being inserted through the narrow key insertion hole into the cylinder lock.

Abstract: A cylindrical lock includes a casing having an annular front face with an inner circumferential portion surrounding a key insert member received by a key. A keyhole is defined between the inner circumferential portion and the key insert member, a lower portion of the key insert member is displaced from an axial center of a lock cylinder by a predetermined distance. The key includes a cylindrical end received by the key hole. A thickness of an upper side of the cylindrical end is different from a thickness of the lower end such that, when the key is rotated, the displaced lower side of the key insert member causes a width of portions of the keyhole to be varied. Thus picking of the cylindrical lock with a picking tool or the like is prevented.

Abstract: A control apparatus which includes apparatus for storing a first digital code, apparatus for storing a second digital code, and apparatus for comparing the first and second digital codes, the apparatus for comparing including first and second generally dish shaped members that are dimensioned and configured for nesting relationship. In some forms of the invention the dish shaped members are each rotationally symmetrical. The first and second dish shaped members may each include a plurality of steps on the face thereof. At least one of the first and second dish shaped members includes a plurality of steps on the face thereof. The other of said first and second dish shaped members may includes a plurality of steps on the face thereof. The apparatus will often include means for conducting disposed respectively in contact with the conductive generally planar members. Some of the generally planar members may have tab portions for connection thereto.

Abstract: A hand repairable plunger lock key includes a hollow body in which is hand inserted or removed a pair of springs and a cartridge which tends to periodically wear out and require replacement. A cap is threaded to the body and is manually removed or attached without tools. A key operating cam has a pin which is releasably secured to a mating slot in the cartridge operating shaft which protrudes from the cap. The body and cap are resiliently displaced a distance sufficient for the slot to be engaged or disengaged with the cam pin. Once engaged, the body and cap are released to normally bias the pin to the shaft slot via springs in the key used to bias the cam against the cap.

Abstract: A control apparatus which includes apparatus for storing a first digital code, apparatus for storing a second digital code, and apparatus for comparing the first and second digital codes, the apparatus for comparing including first and second generally dish shaped members that are dimensioned and configured for nesting relationship. In some forms of the invention the dish shaped members are each rotationally symmetrical. The first and second dish shaped members may each include a plurality of steps on the face thereof. At least one of the first and second dish shaped members includes a plurality of steps on the face thereof. The other of said first and second dish shaped members may includes a plurality of steps on the face thereof.

Abstract: An electromechanical rotary switch actuator for the operation of doors of mass transit vehicles. The switch actuator discloses a crew switch actuator that incorporates the features of a rotary switch while at the same time provides low cost manufacturing of the switch actuator apparatus. The invention is a simple, yet innovative, apparatus whereby rotational control of the switch assembly is provided by a retaining member which mates with a slot grooved into a shaft mounted for rotation in the actuator body. The longitudinally axial dimension of the actuator body is small which enables the apparatus to be flush mounted to the outside walls of the transit vehicles. The crew switch actuator disclosed is operated not only by a detachable key which is also disclosed, but also may be actuated with the same keys currently being used to operate the door control switches of most mass transit systems.

Abstract: A lockable lock is disclosed, particularly for drink distribution trolleys in aircraft, comprising an additional latch (20) for locking the sliding bolt (7) whose movement is dependent on the pivoting movement of an operating and unlocking lever (8) which also displays, through the aperture (13), the provisioned state of the trolley, the lever (8) being actuated by a key fitted on its shaft (9).