Abstract: A lock device having a rotatable identification brand includes a lock body defining a receiving space and formed with at least one view window, a rotatable member rotatably mounted in the receiving space of the lock body and provided with identification information that may be seen through the view window of the lock body, and a drive mechanism mounted on the rotatable member for rotating the rotatable member. The rotatable member may be driven and rotated by the drive mechanism, so that the user may watch the information printed on the rotatable member through the view window, thereby facilitating other people identifying the owner of the lock device, and thereby enhancing the aesthetic quality of the lock device.

Abstract: By forming a combination padlock from heavy duty metal throughout with an enlarged, heavy duty locking bar or shackle being employed having a tamper-proof holding cavity for the terminating, locking end of the locking bar, an effective, easily produced, high security padlock is achieved which employs a combination system for fully operating the padlock. In addition, the combination padlock of the present invention incorporates tumbler or clutch wheel constructions which cooperate with the rotating dials to virtually eliminate any possibility that an unauthorized person would be capable of gaining access to the padlock by known combination lock picking techniques by forming each tumbler or clutch wheel with a plurality of radially extending fins formed thereon, with each of the fins being arcuately spaced from the adjacent fin in a non-symmetrical pattern.

Abstract: A padlock includes: a lock body; a shackle operatively locked in or unlocked from the lock body; a key-operated locking device formed in the lock body for operatively unlocking the shackle for unlocking the padlock by using a key, and a combination locking device juxtapositionally formed in the lock body for operatively unlocking the shackle for unlocking the padlock merely by dialing the combination to an unlocking number.

Abstract: An illuminated combination pad lock that illuminates in response to pressing in the combination dial or raising the shackle although still in the locked position. The illumination ceases in response to release of the combination dial or the shackle.

Abstract: A combination padlock has a lock mechanism, which comprises two dials, with each being mounted on a shaft rod to prevent the two dials from being interfered with each other. The two dials are partially jutted out of the housing of the combination padlock to facilitate the turning of the dials with fingers at the same time.

Abstract: By employing the present invention, a combination lock is achieved which provides two separate and independent locking members formed in a single combination lock. Preferably, the combination lock of the present invention incorporates, either independently or in combination with a visual indicator, two separate and independent locking members, such as a shackle and/or flexible cable member. In the preferred construction, the elongated flexible cable member is anchored at one end thereof to the housing of the padlock, with the opposed end being removably lockable to the housing. By employing a portion of the shackle as a locking component for the elongated flexible cable, the rotatable dials associated with the combination lock are employed for locking and unlocking both the shackle and the flexible cable. By achieving a combination lock having this unique, dual locking member, the user is provided with a greater sense of security and enhanced protection.

Abstract: A combination padlock has a lock mechanism, which includes two dials, with each being mounted on a shaft rod to prevent the two dials from being interfered with each other. The two dials partially jut out of the housing of the combination padlock to facilitate the turning of the dials with fingers at the same time.

Abstract: A cable lock includes a body and a cable. A latch hole and an elongated hole are respectively defined at two sides of the body. The cable has a latch head secured in the latch hole, and a fixed head extending through the elongated hole. A button is received in the body and located between the latch hole and the elongated hole. A hook is pivotally mounted in the body. The hook has a straight end pushed by a resilient member, and a curved end clasping the cable in the elongated hole. A shaft with a dial is connected with the button. When the dial is turned to a correct sequence, the latch head can be released from the latch hole, and the cable can be freely moved in the elongated hole to release the locked item.

Abstract: An illuminated combination pad lock that illuminates in response to pressing in the combination dial or raising the shackle although still in the locked position. The illumination ceases in response to release of the combination dial or the shackle.

Abstract: A combination lock having a housing, a shackle, a dial, a pushbutton, and a lock assembly. The lock assembly is made of a group of rotating disks having windows that can be aligned to open the lock. When the dial is turned according to the combination of the lock, the windows become aligned so that the user can depress the pushbutton to release the shackle. The pushbutton travels in a direction that is perpendicular to the axis of rotation of the dial. When the shackle is locked again, the pushbutton returns to its original position. As the pushbutton travels back to its original position, portions of the lock assembly are turned so that the combination must be reentered in order to reopen the lock.

Abstract: A combination push button and/or key operated padlock is disclosed as having a housing, a shackle detachably connected to the housing for opening and closing the padlock, a push button slide plate for operative detachable movement of the shackle relative to the housing, and a plurality of push buttons mounted to the housing for the push button slide plate. At least one of the push buttons is a releasing push button that detach from the push button slide plate when depressed. The remainder of the push buttons are blocking push buttons that engage the push button slide plate when depressed. A shackle detachment is connected to the push button slide plate for moving it in detachable position when the releasing push buttons only are depressed. Each of the push buttons having independently mounted spring loaded end caps on each free end to assist in camouflaging the releasing and blocking push button from each other.

Abstract: The lock construction of the present invention has a lock body defining an interior cavity and a shackle that is releasably received in the interior cavity. The shackle is movable to a locked position for securing to an object and an unlocked position for releasing the object between the shackle and the lock body. A locking mechanism is disposed within the interior cavity of the lock and comprises rotatable first and second members. A motor is included to rotate said second member and thereby rotate the first member to secure and release the shackle between the locked and unlocked positions.

Abstract: A theftproof lock structure includes a number lock body, an alarm, an elastic plate, and a rotary wheel set including a plurality of number wheels and follower wheels. One of the follower wheels includes a boss, and the elastic plate includes a tilt abutting piece detachably abutting the boss. When the number wheels are rotated to a correct position, the alarm is closed. When the number wheels are rotated to deviate from the correct position, the follower wheels are rotated with the number wheels to lock the padlock while the boss of the follower wheel is moved to detach from the abutting piece of the elastic plate, thereby starting the alarm. When a thief touches the number wheels, the buzzer of the alarm will be started to emit sound loudly, thereby efficiently achieving a theftproof function.

Abstract: An illuminated combination pad lock that illuminates in response to pressing in the combination dial or raising the shackle although still in the locked position. The illumination ceases in response to release of the combination dial or the shackle.

Abstract: A combination lock mechanism comprising a housing (20), a locking element (40) fitted with a locking latch (48) and extending into the housing (20), at least two coaxially disposed rotatable locking assemblies (58, 60, 62), each comprising a cogged wheel (68), a locking disc (70) formed with a peripheral recess (84) and a reset element (72) fixable to the cogged wheel (68), a forked locking member (90) pivotally secured within the housing (20) and fitted with first engaging fingers (94), each engaging finger (94) adapted for engagement with the peripheral recess (84) of a corresponding locking disc (70), second engaging fingers (96, 98), each adapted for engagement with a corresponding reset element (72), and a locking lug (140) for locking engagement with the locking latch (48) of the locking element (40).

Abstract: An anti-theft device for an aircraft includes first and second U-shaped members one of which has tubular legs telescopically receiving arms of the other and one of the arms of which extends through a passage in sleeve and control post components in the cockpit of an aircraft to lock the aileron and elevator components of the aircraft against displacement relative to the aircraft wings and stabilizer, respectively. A key or combination type lock releasably holds the anti-theft device in its mounted condition.

Abstract: A combination lock (100) comprising a body (10) formed with a plurality of parallel slots (20) and a bore (30) intersecting with the slots (20) to form co-axial apertures (32) through the parts of the body (10) immediately above and below each of the slots (20), each said aperture (32) above a respective slot (20) being formed with an unlocking groove (34). A plurality of dials (40) are received in the slots (20) respectively, each of which is formed around its inner side with a ring of equi-angular recesses (42). An inverted J-shaped shackle (60) having a longer limb (62) extends into the bore (30) and passes through the dials (40).

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: The invention is of a design for both an internally based design feature and add-on accessories, both of which provide lighting which is directed to the dial(s) of conventional combination pad locks. Applicant's invention permits lock users to operate pad locks in darkened conditions, without needing any ancillary lighting or lighting accessories (flashlights, etc.).

Abstract: The latching components of the padlock are driven by a motor between positions for latching and releasing the padlock shackle. Power for the motor is provided by a source carried in an electronic key. An encoder element with associated optical elements provides position information to the control circuit carried inside of the padlock. The control circuit correlates the position information with the signal directing power to the motor so that the motor is precisely controlled for moving the latching elements between release and latch.

Abstract: By providing an automatically displayed, easily seen, positive visual indicator on a combination lock each time the combination lock is placed in its combination set or re-set position, a unique, easily used, enhanced combination lock is realized. Preferably, the visual indicator is automatically displayed upon entry of the lock into its combination setting or resetting position, thereby providing the user with a positive, readily seen, visual display clearly informing the user that the combination sequence may be altered. 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: By providing a separate and independent release assembly having independent activation means for controlling the release or opening of a combination lock, an effective, easily produced, combination lock is achieved. The combination lock of the present invention virtually eliminates the ability of unauthorized persons from opening the lock, using known picking techniques, while also being constructed with the interior chambers thereof virtually sealed from ambient surroundings, preventing unwanted contamination from entering the interior of the lock and the rotating components thereof. In addition, a minimum number of components are employed in combination with a housing and a movable shackle which is completely controlled by a separate and independent shackle release assembly having an independent activation member. In this way, the unique combination padlock construction of this invention is achieved.

Abstract: A pad lock includes an outer casing, a lock main body, and a shackle. A stem is slidably mounted in the lock main body. Several number wheels are rotatably mounted around the stem. Also rotatably mounted around the stem are several retaining sleeves each being releasably engaged with an associated number wheel to rotate therewith. A lever member includes a first end for releasably engaging two pin members to retain the shackle in a locked status. The lever member includes a second end with a number of tongues for engaging with the retaining sleeves. A positioning member is formed on the second end of the lever member. A safety pin is mounted to the lever member to assure the positioning member in a position that prevents setting of a new code when any one of the number wheels is not in the correct position for unlocking.

Abstract: An easily operable combination padlock includes: a casing, a shackle having a long leg member and a short leg member respectively lockable with a pair of locking shuttles slidably held in the casing, a plurality of dials and sleeves rotatably mounted on a bolt longitudinally held in the casing, a conical head portion formed on a top of the bolt tangentially engageable with the two shuttles, and a combination-changing device formed on a bottom portion of the bolt and the casing for resetting a new combination when the padlock is unlocked; whereby upon an outward extending of the two shuttles as urged by the conical head portion of the bolt to engage the two leg members of the shackle, the shackle is locked for locking the padlock; and upon unlocking of the padlock, the conical head portion on the bolt is downwardly depressible without retarding an inward retraction of the two shuttles, the shackle will be upwardly pulled by retracting the shuttles for unlocking the padlock.

Abstract: A tamper resistant combination lock including a housing having a through bore receiving a locking plunger with a plurality of integral-spaced obstructions thereon, the housing having a plurality of transverse slots each receiving one of two identical blocking slides that snap between three distinct positions, one passing the obstructions and plunger, and two blocking the obstructions and plunger. Lock picking is minimized by flexible fingers in the slides that engage the plunger obstructions when the slides are in the plunger passing position to simulate the slide blocking positions as the lock picker tugs the plunger.

Abstract: A combination lock including a housing, a dial assembly, a press plate, and a latch means. When the dials are turned to a preset code, a hook may be pulled upwardly to cause a hook projection to extend out of a seat notch so that a first shaft post brings the entire dial assembly to displace to one side due to a clearance between a hook notch and a hook neck portion, so that shaft notches engage wedge-shaped projections on the housing. When the hook is pressed downwardly, the hook projection enters the seat notch so that the first shaft post enters the hook notch to cause a spring to reset, bringing the entire dial assembly to displace to the other side so that the shaft notches disengage from the wedge-shaped projections to achieve locking.

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: 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 padlock comprises a body and a shackle capable of rotating freely. The body is provided therein with a dial set having a plurality of the numbered wheels mounted on a shaft rod capable of an axial displacement. The shackle is provided with a neck fastened pivotally with the body. The neck is provided at the bottom thereof with a through hole extending along the axis of the neck and engageable with the shaft rod. The shackle is further provided with a hooked portion and a retaining member fastened pivotally thereto between the neck and the hooked portion. The hook portion is provided with a cut which is pressed against by one end of the retaining member. The top end of the shaft rod is pressed against by another end of the retaining member.

Abstract: A tamper resistant combination lock including a housing having a through bore receiving a locking plunger with a plurality of integral spaced obstructions thereon, the housing having a plurality of transverse slots each receiving one of two identical blocking slides that snap between three distinct positions, one passing the obstructions and plunger, and two blocking the obstructions and plunger. Lock picking is minimized by flexible fingers in the slides that engage the plunger obstructions when the slides are in the plunger passing position to simulate the slide blocking positions as the lock picker tugs the plunger.

Abstract: A combination padlock includes a plurality of dials longitudinally rotatably mounted in a casing of the padlock, and a plurality of read-out windows juxtapositionally formed in a narrow side portion of the casing to allow each read-out window to be adapted for displaying an unique numeral of each dial and linearly aligned to be a single row to correspond a plurality of numerals of a combination for unlocking the padlock, whereby upon rotation of the dials in the casing of the padlock, the correct combination will be easily recognized and observed through the single-row read-out windows linearly formed in the side portion of the padlock for conveniently unlocking the padlock. A reset mechanism is provided for temporarily locking the shackle when unlocked for freely performing the resetting operation in a fail-safe way by the user.

Abstract: A combination padlock with an improved rocker assembly as looking control device. The combination padlock contains a slide plate, a rocker assembly, a shackle, a predetermined number of numbered wheels, and a plurality of wheel sleeves respectively matching the numbered wheels. The slide plate is provided with a predetermined number of semicircular holes, each of the semicircular holes is adapted for receiving a spring and one of the wheel sleeves. An oblong hole is located between two of the semicircular holes, each of the semicircular holes is further provided with an angled flange corresponding in angle and dimension to a notch provided in each of the wheel sleeves. When a correct combination is dialed, the notches match the angles and the lock is unlocked. The rocker assembly contains a rocking hole, a retaining bar, and a rocking shaft.

Abstract: A combination padlock includes a plurality of dials longitudinally rotatably mounted in a central portion of a casing having two opposite secant peripheries of each dial protruding frontwardly and rearwardly from the casing for a firm rotating dialing operation by a user's two fingers disposed on a front and a rear side of the casing for ensuring a precise lock opening or closing operation and for preventing an unexpected impact or damage of the lock caused by an external force or object.

Abstract: Disclosed is a lock for securing the U-shaped member of a hasp-type latch assembly, and which lock has an outer protective case having a front wall with elongated aperture therein that can receive the U-shaped member, and the case enclosing a pair of pivotally mounted arms and the first of the arms having a locking tap that is spaced opposite a locking tab of the second arm and aligned one to each side of the apertures, and the lock having an open position in which a segment of the U-shaped member can be inserted through the aperture and past the spaced-apart locking tabs, and a closed position in which the locking tabs are moved towards each other bringing opposing edges of the blades into engagement to secure the U-shaped member.

Abstract: A combination padlock with re-setting mechanism, which comprises a main shaft having a shaft end block on one end and a shaft portion on the other end thereof; the shaft portion has an axial hole with cascade-shaped hole therein and a long slot on the top side thereof for receiving a positioning rod and a locking bar; a spring is mounted between the locking tumbler and the positioning rod; springs are also mounted between the locking bar and the positioning rod. The shaft portion is mounted around with several clutch rings and resilient partition rings. After the main shaft and the fixed cap are assembled together, the positioning rod is fixed in place with a fixing pin; the fixed cap has a shackle hole for receiving one end of a shackle. The outer surface of the main shaft is mounted with several wheel members; the shaft end block of the main shaft and the movable cap are detachable so as to facilitate changing the combination numbers by removing all the wheel members to set new combination numbers thereon.

Abstract: A shackle leg changeable combination lock including clutches and combination wheels slidable to position therein for positive engagement in which the combination wheels are axially restrained in position by a removable cap held by a detent means. The cap is removable when a shackle leg is moved upwardly to an unlock position and the cap detent means is overcome by application of force.

Abstract: A combination padlock includes: a first lock body combinable with a second lock body having a hollow spindle formed in the second lock body, a shackle generally U shaped having two leg members respectively lockably embedded in the two lock bodies, a plurality of dials rotatably mounted on the hollow spindle of the second lock body, a plurality of sleeves each sleeve rotatably engageable with each dial, a locking bolt slidably held in the hollow spindle normally locking one leg member of the shackle for locking the padlock, and at least a combination-changing pin preformed in situ in one lock body, whereby upon an inward depression of the pin to disengage the sleeves from the dials, the dials can be freely rotated for resetting a new combination conveniently.

Abstract: It is an improvement for a combination padlock, which comprises mainly a main shaft for mounting, a combination wheel assembly; the main shaft has a T-shaped slot for receiving a T-shaped block therein. There are two springs being mounted between the T-shaped block and the T-shaped slot; the main shaft has a center hole for loading two lock tumblers therein; there is a spring being mounted between the two lock tumblers to maintain a pushing force to the tumblers. After the main shaft is mounted with the combination wheel assembly, an end cap is fixedly attached to an end of the main shaft. Since there is a given flexible distance between the two lock tumblers set with the T-shaped block, the padlock can be locked up or unlock easily under a security condition.

Abstract: The present disclosure is related to a code variable combination lock which is equipped with a code setting and locking assembly made up of a number of dial wheels having consecutive digits disposed thereon and a number of corresponding wheel sleeves which all are mounted on a lock core with a biasing spring and a stop member disposed at the end thereof. A push bracket having a latch hook disposed at the front end thereof is slidably engaged with the rightmost wheel sleeve. On the inner and outer surfaces of each wheel sleeve are disposed protrusions, and the inner wall of each dial wheel is provided with a plurality of spaced grooves.

Abstract: A combination lock or padlock having pushbuttons where the combination of buttons to be pushed to open the lock is mechanically programmable by the user is disclosed. The lock has a case and a locking arm and associated slider, moveable between a locked and unlocked position. A plurality of buttons project from at least one side of the case, and are owner-reversible between two orientations and moveable through holes in the case between first and second positions. In one orientation, movement of the locking means is barred in the first position and permitted in the second position, and in the other orientation movement is permitted in the first position and barred in the second position. The orientation of any button is not being visually ascertainable from outside the case, so the lock owner can program the combination of the lock by selecting the orientation of the respective buttons.

Abstract: A push-button padlock having a swivel-only shackle, the free end of which is receivingly engaged by a sleeve that is reciprocable into the padlock body housing upon actuation of a thumb latch member projecting through the housing, preferably through a hole in the front face. The shackle is an inverted J-shaped shackle with the longer end entrained in the padlock body where it engages a latching mechanism which includes the thumb latch and shackle sleeve members. The thumb latch is preferably of breakaway construction and the sleeve may be rotatable. A locking mechanism of any desired type to selectively lock and unlock the latching mechanism may be employed. One preferred locking mechanism is of push-button type, and another preferred locking mechanism is a key lock mechanism, both of which are operative to selectively lock and unlock the latching mechanism that may be employed.

Abstract: The hanging lock is opened and closed by adjusting numbers. It comprises a U-shaped locking rod (10), having a stop (11), a slide plate (40), an upper cover (30), and a lower plate (20). The slide plate is located between the upper cover and the lower cover. Two dials (53, 54) are provided and a reed (55). The lower cover (20) has two semicircular grooves (21, 22) for insertion of the locking rod when the device is assembled. A spring (50) is disposed at the end of the longer arm of the locking rod (10) and a pair of posts are located on the lower cover. A slide rail (27) disposed between the posts has a concave portion for fitting a spring. The slide rail protrudes at one end of the form a flange (24) and is capable of moving backward and forward to open and close the locking device. The dials (53, 54) are placed on top of circular holes on the slide plate. Number cases (60) are installed on the top of each of the circular holes of the slide plate to get up with the number dial by means of the convex block.

Abstract: A combination padlock includes a shackle ejector and a push-button slide provided in a lock casing, whereby upon a depression of a push button of the push-button slide to disengage a shackle from the slide, a resilience of the shackle ejector may eject a free end of the shackle for a quick opening of the padlock.

Abstract: A pusher-type combination padlock includes a movable shackle reciprocatively formed in a longitudinal side portion of the padlock having a pusher plate secured to the movable shackle slidably overlain on a cover of a padlock casing so that when rotating the dials and sleeves to their opening combination, the pusher plate can be pushed upwardly to open the movable shackle for opening the lock in an easier and comfortable way, especially for a better ergonomic effect.

Abstract: A sequence dependent push-button lock mechanism having compression loaded locking rod assemblies, arcuate segments of which are placed in compression if attempts are made to force the lock open, and unlocking by rotating the arcuate segments out of compression engagement with a sliding block associated with a thumb-actuated reciprocating shackle sleeve, particularly adapted for use in padlocks and deadbolt/cabinet locks. The locks are applicable to use in combination with pivot-only shackles in the padlock form, and thumb-actuated shackle or deadbolt release mechanisms. The thumb latch is of a break-away type to deter plurality of holes in a spaced array for receiving spring biased automatic return push-button assemblies which actuate locking rods that are disposed to rotate upon selective engagement with various combinations of special "T" and "C" shaped flanges on button actuator members.

Abstract: A push-button padlock having a swivel-only shackle, the free end of which is receivingly engaged by a sleeve that is reciprocable into the padlock body housing upon actuation of a thumb latch member projecting through the housing, preferably through a hole in the front face. The shackle is an inverted J-shaped shackle with the longer end entrained in the padlock body where it engages a latching mechanism which includes the thumb latch and shackle sleeve members. The thumb latch is preferably of breakaway construction and the sleeve may be rotatable. A locking mechanism of any desired type to selectively lock and unlock the latching mechanism may be employed. The preferred locking mechanism is of push-button type, comprising a button block member having a plurality of holes in a spaced array for receiving and retaining two types of buttons, one or more Type A Combination Button(s) and the balance being Dead Pin B Buttons.

Abstract: The present invention relates in general to combination padlocks of the type which permit the user to reset the combination, and it relates in particular to a new and improved mechanism for preventing spurious or unintentional changing of the combination.

Abstract: An adjustable combination numerical lock comprising a hook, a first tray, a second tray, a contact chip, two or more number dials, springs and driving rolls. The number dials, the springs, and the driving rolls are respectively set in the second tray, and the hook wedged with the contact chip is put on the two trays. When this lock is locked, the sliding strips do not engage with the recesses of the driving rolls, thereby allowing the driving rolls to rotate with the number dials. Therefore, the sliding strips will be prevented from sliding up if the combination is off. When the numbers are put into the right combination, the lock is opened and the sliding strips are partly engaged with the recesses so that the hook can be pulled up. The combination of the lock can be changed (while in opening combination) by turning the hook right 90 degrees and then pulling it up so that the sliding strips are completely engaged with the recesses. This keeps the driving rolls from rotating with the number dials.

Abstract: The application discloses a push-button lock to which a secondary key is added to the locking system for use when the button combination for a lock is forgotten or not readily available. Unlocking with the secondary key is accomplished by the use of a toothed trigger plate and a gear system. The secondary key turns the gear which in turn rotates the trigger plate. A secondary locking pin secured to the trigger plate rotates with the movement of the trigger plate and releases the shackle. When unlocked by the push-button combination, the shackle is released and the trigger plate is separated from the gear. The toothed end of the trigger plate again aligns with the gear when returned to the locked position. In the preferred embodiment alternative, an elongated flange member having a slot in which a pin on the trigger plate travels is employed in place of the system.

Abstract: A padlock includes a casing having an U-shaped fixed shackle protruding on a side wall of the casing, a reciprocating actuator linearly moving in the casing and having a movable shackle fastener formed thereon to operatively form a loop with the U-shaped fixed shackle for locking purpose, a plurality of dials and clutch wheels rotatably mounted in the casing with each dial resiliently engaging with each clutch wheel, wherein the reciprocating actuator includes plural pairs of longitudinal extensions, adapted to be operatively obstructed against the clutch wheels when downwardly depressing the actuator to lock the padlock, or adapted for operatively clamping the plural clutch wheels to allow the free rotation of the dials for setting a new combination when downwardly depressing the actuator to open the shackle.