Abstract: Changing the locking mechanism in a U-lock, cable lock or other tie lock as often as desired is achieved without compromising the lock's resistance to physical damage. This function is achieved by an auxiliary sleeve that removably fits over the U-lock's crossbar or the cable lock's end bar. Either bar provides an aperture, which is too small to permit the locking mechanism to be picked or pried, but which is operatively positioned and sufficiently large to provide access for a key to the keyway of the locking mechanism.

Abstract: A lock (10) comprising a lock body (12) defining a top surface (14) and a bottom surface (16), the lock body (12) having a bore (18) formed therein extending from the top surface (14) to a location spaced from the bottom surface (16), a key-operated lock cylinder (20) located in the bore (18) and having a keyway opening (22) facing the bottom surface (16), a key entry aperture (24) being formed in the bottom surface (16) for permitting insertion of a key therethrough into engagement with the keyway opening (22) of the cylinder (20) and being sized so as not to permit the cylinder (20) to pass therethrough, a shackle (26), a locking mechanism located in the lock body (12) and being operated by the lock cylinder (20) for locking the shackle (26), characterized by a multifunctional lock top protector element (60) mounted onto the top surface (14) of the lock body (12), the multifunctional lock top protector element (60) being apertured to accommodate the shackle (26) and to surround at least a portion thereof, t

Abstract: Changing the locking mechanism in a U-lock, cable lock or other tie lock as often as desired is achieved without compromising the lock's resistance to physical damage. This function is achieved by an auxiliary sleeve that removably fits over the U-lock's crossbar or the cable lock's end bar. Either bar provides an aperture, which is too small to permit the locking mechanism to be picked or pried, but which is operatively positioned and sufficiently large to provide access for a key to the keyway of the locking mechanism.

Abstract: A padlock is provided with a multi-layer protective metal shell having non-aligned, alternating seams among the various layers, primary and secondary key-operable locks attached to the shackle of the padlock by a drive linkage that will fail before the primary and secondary locks to maintain the integrity of the lock, an ergonomic shape, an offset shackle for facilitating use of the lock in close-quarters applications, and a modular cushioned bumper for attachment to the outside of the lock body that is color-coded to correspond to a key and includes a protective cover over the keyway accessing the lock cylinder which is moveable to facilitate insertion of the key into the padlock.

Abstract: A safety razor blade unit has a guard (2), a cap (3) and three parallel blades (11, 12, 13) mounted between the guard and cap, at least one of the blades, guard and cap being movable from an at rest (non-shaving) position to modify a blade exposure dimension to attain a target blade geometry, at which shaving is initiated, in which the exposure of the first blade (11) is not greater than zero and the exposure of the third blade (13) is not less than zero. At least one of the cap (3) and guard (2) can be movable against the force of a spring (21 or 20) from an at rest position in which all the blades between the guard and cap have their cutting edges disposed below a plane tangential to the skin contacting surfaces of the guard and cap. The blades can be independently sprung or carried for movement in unison on a carrier pivotally mounted in a frame of the blade unit.

Abstract: A coupling lock having a base, a catch provided on the base, a restraining member on a free end of the catch. A matching cover is also provided on the base, having a channel with a through hole provided through the channel. The through hole is located so that when the cover is closed upon the base, the catch is inserted into the channel while the restraining member on the catch is deformed to penetrate into the through hole due to the compression by the cover. Such penetration secures the base and the cover together. A locking coil chamber member containing a plurality of pins located in multiple rows is provided on the base.

Abstract: A cable lock assembly includes a lock body having a first casing, and a second casing securely coupled with the first casing and defining a locking groove which includes an insertion hole, and an elongated retaining slot connecting to the insertion hole and having a dimension smaller than that of the insertion hole, and a flexible cable having a first end secured to the second casing, and a second end including a locking block detachably received in the locking groove.

Abstract: By providing a removable cover assembly mountable to a rotating dial of a central housing of a padlock, a padlock construction is attained which is visually distinctive and can be custom tailored to individual consumer choice. The cover assembly of the present invention is preferably constructed from two cooperating components, thereby providing ease of assembly and removal. In its preferred construction, the cover assembly is formed in a plurality of alternate colors, styles, designs, and the like, with or without indicia displayed thereon providing for visual distinctiveness and coordination with luggage products. Furthermore, the cover assembly is also constructed in a manner which enables the dials of the padlock to be easily accessed for use as well as incorporating a visually distinctive combination read-out zone for improved visibility.

Abstract: A U-shaped lock includes a housing, a shackle holder and a cap closing the housing. A U-shaped shackle has two ends inserted in two shackle holes in the cap and the shackle holder. A lock unit with a pin tumbler mechanism is fixed in a lock hole of the shackle holder, being rotated for two stages of angles by a key to move a pull rod unit fitted in a horizontal lengthwise hole on the lock hole in the shackle holder outward or inward to lock or unlock the two ends of the shackle.

Abstract: Lock assembly including a first locking device in two parts intended to be mounted on a door, and a second detachable locking device intended to be treaded from above on the two parts of the first locking device when the door is closed. One of the locking devices shows a projecting portion and the second locking device shows a recess cooresponding to the projecting portion with a cooresponding wedge-shape. The projecting portion shows an outward directed rim along the sides extending to its wedge-shaped tip, and the recess shows an inwards directed rim along the cooresponding sides. A faucet extends in a locked position through the projecting portion across the recess. The projecting portion shows a half-cylindric cavity and the faucet shows a half-cylindric section and is fit into the bottom of the half-cylindric cavity.

Abstract: A vehicle pedal lock comprises first and second members movable relative to one another and adapted for locking and unlocking engagement, and a lock assembly for locking the first and second members to one another. The first member has a shackle and at least one leg extending from the shackle. The shackle has an open end, a pair of generally parallel arms each having a terminal end, and a curved portion connecting the arms to one another. The second member has a tubular body lockable across the open end of the shackle, and at least two legs extending from the tubular body. The lock assembly comprises a pair of locking elements each provided at the terminal end of one of the arms of the shackle, a pair of openings each formed at an outer surface of the tubular body of the second member for receiving the locking element of one of the arms of the shackle, and a locking mechanism disposed in the tubular body of the second member for locking engagement with the locking elements of the arms of the shackle.

Abstract: A padlock includes a body combined with a first casing a second casing. The first casing has a hook-like latch integrally extending therefrom. A pivotal member is received in the body and has a rod extending from a first end thereof to alignedly contact with the hook-like latch when it is pivoted. A symbol-sequence selecting device is received in the body to cooperate with the pivotal member. The symbol-sequence selecting device is operable at two sides of the padlock. The padlock further includes a release member movably mounted to a surface of the first casing to activate a pivoting of the pivotal member.

Abstract: A padlock concept consisting of a novel shackle comprised of two tapered shackle elements arranged so that they overlay each other to enclose and opening sufficient to accept the sample of a hasp or attachment device. The shackle elements are connected at one end and when unlocked and unlatched are free to move apart, in a motion causing the two shackle elements to separate, providing a clearance between them, at the unconnected end. Each shackle element includes an opening to allow the staple of the hasp to pass to the common opening. This clearance occurs in opposing elements so that when the elements are brought together or closed the staple of the hasp is completely enclosed by the two shackle elements which substantially fill the space available within the hasp staple. The elements are then latched and locked to provide the security function of a padlock engaged with the staple of a hasp or attachment device.

Abstract: An actuating mechanism includes a receiving base defining a channel and having a first end portion and a second end portion formed with a cylinder defining a lock hole communicating with the channel, and a retaining post extending from the cylinder. A shackle includes a first end portion and a second end portion defining a lock cavity communicating with the lock hole. A locking member is slidably mounted in the channel and includes a first end portion and a second end portion formed with a locking hook detachably received in the lock cavity. A drive shaft extends through a rotary ring module and includes a first end portion and a second end portion fixedly engaged with the locking member such that the locking member can be moved with the drive shaft synchronously. A circular piece is slidably mounted on the retaining post and is formed with a side extension abutting on the second end portion of the drive shaft.

Abstract: A portable lock has a housing, a locking member connected to the housing, and a lock control mounted on the housing for selectively locking and unlocking the locking member. The housing is formed with a base and a tip, first and second sidewalls each extending from the base to the tip, and front and back walls each extending between the base, tip, and first and second sidewalls. The base is wider than the tip and the first and second sidewalls are farther apart from each other near the base than near the tip. When the housing is grasped by a hand having any orientation relative to the housing, the lock control is reachable for manipulation by at least one digit of the same hand. A light is mounted on the housing, and a wheel is mounted within the housing and has a hollow portion defining a compartment.

Abstract: A lock for a device having as a component thereof critical for use and/or operation thereof a tubular member, includes a tubular insert for disposition in a gap provided in the tubular member such that the insert becomes a portion of the tubular member, a lock member for encircling an anchoring structure and for making a locking connection to the insert. The insert is provided with a frangible portion which renders the insert more susceptible to breaking than the lock member. Upon breaking of the insert, the tubular member portion is broken to provide the device with a broken component critical to the operation thereof.

Abstract: A U-shaped lock includes a U-shaped bar, a cross bar and a lock body mounted therein, such that a user is able to achieve a locking process by the U-shaped bar and the cross bar no matter whether the combination input by a user of the lock body coincides with the predetermined sequence.

Abstract: A lock in which a key can neither be turned nor removed with the lock is open, is disclosed. The lock body is formed from two identical sections, the inner surface of each being provided with formations which accommodate the moving parts of the lock. The lock cylinder is provided with a plug which is operatively engaged to an extension. The lock shackle is engaged by a lock bearing which is held in place by the extension. Turning the key turns the plug and thus, the extension. This disengages the lock shackle as the lock bearing is no longer held in place. After it has been retracted, the contour of the lock shackle abuts the lock bearing, causing it to engage the extension, thus preventing the extension, the plug and the key from being turned.

Abstract: A combination padlock comprises a housing, a shackle, and a numbered wheel set. The housing is made up of a front housing and a rear housing. The shackle has a hooked portion and a rod-shaped body. The numbered wheel set comprises a seat on which a locking mechanism is disposed for actuating a movable grid plate to move up and down. The front housing is provided with a receiving cell having a position restricting block, whereas the rear housing is provided with a receiving cell having a position restricting block and a retaining block. The position restricting block is intended to confine the rod-shaped body of the shackle while the retaining block is engageable with the retaining recess of the rod-shaped body of the shackle at such time when the shackle is pulled upwards.

Abstract: An alarm padlock (10) comprising a shackle (12) having a long leg (14) and a short leg (16). A body (18) is provided. A facility (20) in the body (18) is for mounting the shackle (12) in a reciprocal movement between a closed position and an extended open position, in which the short leg (16) of the shackle (12) is outside of the body (18) and the long leg (14) of the shackle (12) can swivel within the body (18). A latch mechanism (22) in the body (18) engages with the short leg (16) of the shackle (12), when the shackle (12) is in it's closed position. A lock mechanism (24) in the body (18) is operable to disengage the latch mechanism (22) from the short leg (16) of the shackle (12). An alarm circuit (26) in the body (18) actuates to emit a warning signal when an unauthorized person violates and tampers with the shackle (12) and the body (18).

Abstract: By forming a plurality of false void zones in a lock housing in association with the tumbler release channel, a combination lock construction is attained which virtually eliminates the ability of trained individuals to gain unwanted access to the lock. Preferably, the combination lock housing also incorporates a plurality of non-releasing open or void zones or slots formed in association with the lock release groove for each rotatable tumbler sleeve. In this way, the desired false click is provided for each rotatable dial in order to thwart unwanted opening of the combination lock of this invention. Furthermore, the lock construction of the present invention is constructed with the interior chambers thereof virtually sealed from ambient surroundings, thereby preventing unwanted contamination from entering the interior of the lock and the rotating components thereof. In this way, degradation by contamination is virtually eliminated.

Abstract: A lock device includes a body having a lock core mounted therein and a first hole. A casing is securely mounted around the body. The casing includes a second hole in alignment with the first hole of the body. A first side of the casing includes a rectangular slot defined therein and a side slot in communication with the rectangular slot. A hollow guiding member is securely attached to a second side of the casing and has a through hole in alignment with the first and second holes. The guiding member includes a non-linear guiding slot defined in a periphery thereof, the non-linear guiding slot including a section which extends in a direction having an angle with a longitudinal axis of the first and second holes. A latch rod extends through the first and second holes.

Abstract: A high security lock includes a lock housing, lock cylinder and a lock core. The lock housing defines a key receiving surface and a cavity for receiving the lock cylinder. A cover plate is attached to the lock housing and is located between the lock cylinder and the key receiving surface. The cover plate covers a portion of the lock core. A retaining shield is received in the cavity, which engages the cover plate and is attached within the cylinder.

Abstract: A gearshift stick lock for an automobile including a lock body, a shackle including two legs engageable with the lock body, a sleeve for wholly fitting over a gearshift stick of the automobile and including two threaded holes and two lugs fixed to the sleeve, each of the two lugs having a hole aligned with a corresponding one of the threaded holes, and two screws each extending through a corresponding one of the threaded holes to bear against the gearshift stick of the automobile thereby fixedly mounting the sleeve on the gearshift stick, the legs of the shackle being engaged through the lugs respectively and engaged with the lock body so as to lock the gearshift stick in place.

Abstract: A lock housing with a key way blocking means for selectively blocking the key way includes a pair of meshing halve lock housings, and a circular ring turnably secured on one of the lock housing. The circular ring includes an aperture at one side which is sized and shaped in correspondance with the key way of the lock housing. When the circular ring is turned to a first direction, the key way of the lock housing is exposed outwardly for insertion of a legal key to unlock the lock. When the circular is turned to a second direction, the aperture of the ring departs away from and blocks the key way.

Abstract: A lock assembly for an anti-theft device for a vehicle includes a lock having a base and a box fixed on the lock, the base includes four depressions formed in the upper surface, a casing is engaged on the box and has four ears engaged in the depressions of the base, a housing is engaged on the base and includes two flanges for engaging with the ears so as to retain the ears within the depressions, and a covering is engaged on the casing and the housing for retaining the lock in the housing.

Abstract: A U-lock includes a detachable header with extensions that fit around the arms of the U-bar and extend along the length of those arms to provide strength to the U-lock. The header can be used so that its base is locked at the end of the arms of the U-shaped bar or it can be inverted when locking smaller objects so that its base is locked along the lengths of the arms taking up some of the gap between the locked object and the base of the header. The header is locked to the arms of the U-shaped bar by a locking mechanism which secures the header to the arms of the U-shaped bar in four different places, two on each arm. The U-lock and header with extensions can also be used in combination with security spacers for further security.

Abstract: A padlock includes a lock body (1) and a substantially U-shaped shackle (2), a lock mechanism (4) fitted into a cavity (3) in the lock body and to which at least one lock bolt (5) is functionally connected for locking the shackle to the lock body (1), a cover element (6), which is turnably connected to the lock body (1), preferably by means of threads, and which is located in the insertion direction of the key in front of the lock mechanism (4), and a stop member (7), arranged in the lock body transversally with regard to the cover element (6), removable in the open position of the shackle (2) and preventing, in its blocking position, turning of the cover element (6) with regard to the lock body (1), and a locking ring (10) placed in a groove (9) in the lock body (1) surrounding the cover element and arranged to be installed in its position in case the cover element (6) is to be locked permanently to the lock body (1).

Abstract: A U-lock includes a detachable header with extensions that fit around the arras of the U-bar and extend along the length of those arms to provide strength to the U-lock. The header can be used so that its base is locked at the end of the arms of the U-shaped bar or it can be inverted when locking smaller objects so that its base is locked along the lengths of the arms taking up some of the gap between the locked object and the base of the header. The header is locked to the arms of the U-shaped bar by a locking mechanism which secures the header to the arms of the U-shaped bar in four different places, two on each arm. The U-lock and header with extensions can also be used in combination with security spacers for further security.

Abstract: As a security device to prevent unauthorized removal of merchandise carried by rigid rods cantilevered to a support member, such as conventional pegboard display hooks, a rigid platelike assembly has open end slots along one edge for engaging the display hooks and the ends of the slots can be closed off by a pivotable locking arm to hold the security device on the hooks and prevent the security device from being disengaged from the hooks by sliding off the end of the hooks. The locking arm is latched in the closed or locking position but is releasable by operation of a key to disengage the security device to be able to remove merchandise from the display hook. As a feature, a space is provided on the security device for attaching a label carrying information about the merchandise.

Abstract: A labelled padlock has a body circumscribed by a heat shrunk plastic sleeve displaying a notice. The notice can be imprinted on a hermetically sealed label adhesively affixed to the body of the padlock before a transparent sleeve is applied, or on a surface of the sleeve itself.

Abstract: A padlock structured to have a key inserting direction perpendicularly to the shackle moving direction. The padlock has an outer housing with a hollow post extending from a side wall and the shackle extending from the top wall. The key is inserted sideways into a deadbolt contained in the post. The deadbolt operates two control members which engage and disengage notches in opposite limbs of the shackle.

Abstract: A device which serves the dual purpose of allowing locking or the bicycle to prevent theft and to allow inflation of a bicycle tire tube. The device includes a U-shaped shackle having its open end closed by a cross member which defines an air pump for inflating a bicycle tire.

Abstract: A steering lock with a lock body having an attached extensible member for adjusting the distance between two locking rods which are connected in parallel through a telescopic tube to form a shackle. The shackle can be extended when clearance is required, and is coupled with a pair of hook-shaped fastening rods which are connected in parallel through another telescopic tube for fastening to the steering wheel. When a lock barrel of the lock body is rotated to a locking position, the first and second latches inside the lock body lock up the locking bars and the extensible member. Two protective cover boards are bilaterally attached to the lock body to prevent insertion of a tool to cut the second latch and prevent injury to fingers during the locking and unlocking operation.

Abstract: A portable secure container or keysafe is provided which employs a conventional combination padlock with a permanently attached U-shaped shackle. The padlock serves as both the locking mechanism and closure for the container. The padlock is inserted into a sleeve extending from the container which slidably receives the lock. The mechanism to operate the lock is located in the same opening which receives the lock. The sleeve has a hole to receive the free end of the padlock shackle and a slot which receives the permanently attached end. The slot can be "L" shaped to allow a circular padlock to be rotated within a circular sleeve a limited distance to align the free end of the shackle with a hole in the sleeve. The container can also be secured to a permanent structure by the shackle of the padlock.

Abstract: A shrouded shackle lock having two shell halves with a cover plate in one shell half and a hole in the opposite other shell half. Fastener means positioned in the lock are turnable by a wrench inserted in the hole in the other shell half for removing the cover when the fastener means is disengaged from the cover. Upon the removal of the cover the lock cylinder is removable for rekeying or substitution.The lock shell halves are engaged together using a lock retainer ring welded to one shell half and thereafter bent over and around the other shell half.

Abstract: The principal purpose of this invention is to enhance locking and unlocking mechanisms of a padlock by improving structural components which allow the locking core member to be pushed into the lock body in order to trigger the locking mechanism by forcing locking plate and semi-circular sector thereof to be firmly engaged with locking notch located at the end portions of the U-shaped shackle arms. The unlocking mechanism can be triggered by simply rotating the locking core member with a key in one direction for 90 degrees, causing the locking core member and locking semi-circular sector to be disengaged. Therefore, this invention provides a padlock with improved safety features as well as convenience of ease of use.

Abstract: A padlock, comprising: a housing formed with a pair of sockets, a shackle receivable in and removable from said sockets and a pair of locking bolts projectable into said sockets for locking the shackle therein and retractable from said sockets to permit removal from the shackle therefrom; characterized in that said housing includes a body member carrying said locking bolt, and a pair of sleeves defining said sockets; said sleeves being removably attached to opposite sides of said body member by fasteners received in said sockets so as not to be accessible when the shackle is locked within said sleeves.

Abstract: A laminated padlock includes a casing which is formed of a plurality of metal plates and a barrel member mounted in the casing. The barrel member has a cylinder rotatably inserted thereinto and a groove formed on the outer surface of the barrel member. One of the plates of the casing is depressed inward to engage with the groove of the barrel member so that the barrel member can be fixed in the casing.

Abstract: An easily manufactured, inexpensive, bicycle lock is provided with a U-shaped latch rod (3) with outside grooves (31) at its two ends, these ends being received into corresponding side holes of a tubular lock body (1) having a latitudinal hole. A protecting barrel (4) protrudes laterally of the lock body (1) to surround that end of the latch rod (3) inserted into one of the side holes to prevent easy breakage of the latch rod there. Covers (5) and (51) cover the lock body (1) (including the protruding barrel) and the latch rod (3) respectively. A lock core (2) engages one of the grooved ends of the latch rod (3) during use.

Abstract: A padlock cover with storage compartment, having a first portion which covers the case of a conventional padlock, this first portion having a pair of openings for passing the legs of the padlock shackle. The cover has a second portion having spaced apart walls that define a storage compartment, with an access opening in one wall. A flexible, resilient, elongated lid member is mounted in guide means such that it has a closed position in which one end portion covers the storage compartment opening and the other end abuts the releasably locked leg of the shackle to hold the lid closed; and the lid member being slidable to an open position in which the compartment opening is uncovered when the shackle leg is released from the padlock case thereby unobstructing further guided movement of the lid.

Abstract: A combination padlock includes a first cover having a fixed hasp secured on a left corner of the cover and a movable actuator pivotally formed on a right corner of the cover, a plurality of dials each coupled with a sleeve thereon pivotally mounted on the first cover, a sliding latch having a plurality of sleeve holes each hole having a tongue engageable with a notch formed in each sleeve, and a second cover integrally combined with the first cover to form a padlock casing, whereby upon a rotation of the dials and sleeves to disengage the sleeve notches from the latch tongues to raise the latch, the actuator will be retarded by the latch, unable to be inwardly depressed, for locking the padlock.

Abstract: A changeable key cylinder padlock including a padlock casing, a shackle moveable between a lower locking position and a upper release position, the casing having a central substantially cylindrical cavity therein located between the sockets shaped to receive and removably house a key lock cylinder. The lock cylinder located in the plug cavity has a first key position and is operable by a operator key and control key to rotate to second and third key positions respectively. Locking spheres are positioned when the lock cylinder occupies the first key position to hold the shackle in the lower locking position and release the shackle at the second and third key positions for movement to said upper release position.

Abstract: A changeable key plug type padlock including a padlock body formed as an upper body section and a lower body section defining a pair of companion relatively displaceable body sections having correspondingly shaped outer peripheries in cross-section forming continuations of each other in aligned registered relation. The padlock casing has laterally spaced sockets disposed partially in both companion body sections opening through the upper portion of the padlock body for receiving legs of a shackle and a central substantially cylindrical plug cavity located between the sockets.

Abstract: Keysafe having a main storage case of spaced apart opposing walls in which is affixed a padlock with its shackle extending through the top wall of the case and with the padlock opening for receiving the free end of the shackle oriented towards the front of the case, and a lid for covering the front part of the case that is locked closed when the free end of the padlock shackle is locked in place.

Abstract: A padlock of the kind having a body and a U-shaped shackle which projects above an upper end surface of the body. The shackle has a captured leg which is retained against separation from the body but which can move relative to the body to allow the shackle to adopt a locked or a released condition. Another leg of the shackle has an end portion which is located within the body and is clear of the body respectively in the locked and released conditions of the padlock. A shroud is formed integral with the body and extends upwards from the body upper end surface so as to completely protect the front of the shackle under both the locked and released conditions. The shroud has a rearwardly opening cavity which substantially contains the shackle when in the locked condition so that the shackle is exposed only at the rear of the padlock. The rear of the padlock is substantially flat, whereas the front has a convex curvature.

Abstract: An improved laminated padlock which includes: a lock body made of a plurality of metal plates with a central chamber and a number of openings formed therein; a cylindrical lock barrel matched with a tumbler structure disposed in the central chamber of the lock body; an improved locking mechanism movably installed in a housing structure in the upper portion of the central chamber; and a U-shaped shackle with facing notches slidingly provided in the openings of the lock body. The improved lock mechanism comprises a pair of lock members identically formed in an I-shaped structure, and a pair of elastic members also identically shaped so that a simpler structure and ab effective operation are achieved therewith.

Abstract: A padlock, which comprises a lock casing and a basically U-shaped shackle slidable therein between a closed and an open position. The shackle has two legs of different length, of which at least one is provided with a locking notch. The padlock also comprises a cylinder lock mechanism, operable by a key, and at least one locking member coacting with a guiding portion of a turnable member of the cylinder lock mechanism for locking the shackle to the lock casing. The locking member is movable dependent on the angular position of the guiding portion of the cylinder lock mechanism between a locking and a releasing position. The releasing position allows the shorter shackle leg to completely slide out from the lock casing. A retaining member is attached to the lock casing in order to keep the cylinder lock mechanism properly fitted in the lock casing. The removal of the retaining member from the lock casing requires turning of the retaining member in relation to the lock casing.

Abstract: In order to lessen the cost of manufacturing padlocks, the body of the padlock is made of a shell of hardened steel and has two holes in one wall for the reception of the legs of the shackle, a core with corresponding bores for said legs and for a locking mechanism made of a soft alloy, the bores for said legs within the core being partially lined with hardened steel inserts facing the open ends of said shell, said inserts holding said core within said shell. The core may be cast, extruded or may be made by sintering.

Abstract: A padlock having a body in which a removable lock cylinder is fastened by a removable cylinder guard plate is provided with retainer means for optionally retaining a lock suspension chain, the suspension chain including links having link apertures and the retainer means including a slot in the guard cylinder plate which receives an end link with a detent of the retainer means located in the link aperture, the assembly and fastening of the cylinder guard to the padlock body trapping and retaining the optionally assembled suspension chain to the padlock.