Abstract: A door lock includes a lock with a latch. An inside face plate and an outside face plate of the door lock are respectively mounted to an inside plate and an outside plate of the door lock. A washer plate is sandwiched between the inside face plate and the outside face plate. An inside cylinder and an outside cylinder are connected between the inside plate and the outside plate. An inside collar is connected between the inside face plate and the inside cylinder, and an outside collar is connected between the outside face plate and the outside cylinder. When the door lock is set in ready-to-open mold, the door can be opened by either rotating the shafts or the door handle by one hand. When the door lock is set in locked mold, the door cannot be opened by simply rotating the door handle.

Abstract: A door lock includes a lock with a latch. An inside face plate and an outside face plate of the door lock are respectively mounted to an inside plate and an outside plate of the door lock. A washer plate is sandwiched between the inside face plate and the outside face plate. An inside cylinder and an outside cylinder are connected between the inside plate and the outside plate. An inside collar is connected between the inside face plate and the inside cylinder, and an outside collar is connected between the outside face plate and the outside cylinder. When the door lock is set in ready-to-open mold, the door can be opened by either rotating the shafts or the door handle by one hand. When the door lock is set in locked mold, the door cannot be opened by simply rotating the door handle.

Abstract: A door hinge assembly includes a first part with a first knuckle, a second part with a second knuckle, and a pin. The pin pivotably extends through the first knuckle and fixedly extends through the second knuckle. A first adjustment member threadedly connected to the first inner threaded portion in the first knuckle to move the pin and the second part up and down. A sleeve is mounted to the second knuckle and has a slot in which the second leaf is inserted. The first part has an index area which is located corresponding to the lower end of the sleeve to indicate the axial distance that the door hinge assembly is made. A cover unit is connected to the second leaf. A second adjustment member threadedly extends through the second leaf and adjusts the door hinge assembly back and forth.

Abstract: A door lock transmission structure includes two inserts and a link component installed in a case, and the two inserts are driven by a key and a door handle respectively. The insert driven by the door handle includes two driving elements for driving one of the inserts to operate, such that the two inserts are driven for a synchronous operation when one of the driving elements is operated, so as to constitute the door lock transmission structure.

Abstract: A door lock whose transmission mechanism is controlled by a key. It includes a pivotal part that drives a lock tongue to retract into or extend out of the housing. A vertical bar moves vertically to drive the auxiliary lock ensembles to open or close the lock. The vertical bar uses a horizontally shifting lock chip to control the lock. The lock chip is driven by a key via a lock core.

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

Abstract: A door lock with transmission mechanism, in which a main lock is installed at the side of the door, and an auxiliary lock is installed at each side of the main lock respectively, whereof the main lock has a main lock-tongue, and each of the two auxiliary lock has an auxiliary lock-tongue, whereby the main lock-tongue drives the auxiliary lock-tongue in each of the two auxiliary locks to move together corresponding to the rotation of door handle.

Abstract: A door lock transmission structure includes two inserts and a link component installed in a case, and the two inserts are driven by a key and a door handle respectively. The insert driven by the door handle includes two driving elements for driving one of the inserts to operate, such that the two inserts are driven for a synchronous operation when one of the driving elements is operated, so as to constitute the door lock transmission structure.

Abstract: A door lock whose transmission mechanism is controlled by a key. It includes a pivotal part that drives a lock tongue to retract into or extend out of the housing. A horizontal bar moves horizontally to drive the auxiliary lock ensembles to open or close the lock. The horizontal bar uses a horizontally shifting lock chip to control the lock. The lock chip is driven by a key via a lock core.

Abstract: A door lock of key-driven transmission structure which is comprised of a case, a swing arm, a first link bar and a second link bar, whereof the first and second link bars and a lock-bolt structure on the case can be driven by the swing arm to open or close lock. A first transmission piece is driven when the lock-bolt structure is actuated, and an actuator is driven by the first transmission piece to further drive the two top and bottom pull rods which further drive the two top and bottom lock-bolts to extend outward for locking, thereby to reach a combining action between the lock-bolt structure as well as the top and bottom lock-bolts. The lock-bolt structure is further through linking with a labor saving component installed on the second link bar to achieve the labor saving and easy operation effects.

Abstract: A door lock with transmission mechanism, in which a main lock is installed at the side of the door, and an auxiliary lock is installed at each side of the main lock respectively, whereof the main lock has a main lock-tongue, and each of the two auxiliary lock has an auxiliary lock-tongue, whereby the main lock-tongue drives the auxiliary lock-tongue in each of the two auxiliary locks to move together corresponding to the rotation of door handle.

Abstract: A Reversible rotating door lock handle structure is comprised of: A main body and an actuator which is installed in the containing space of the said main body. The said actuator has a longitudinal slot with a rack installed respectively at its two sides and a hook-piece. A shaft pipe is provided with at least one shifter for engaging with either slot side rack of the said actuator. A handle which has a shift-lever for inserting into the slot of the said actuator and connected to the said hook-piece, thereby to push the actuator to move longitudinally and further to drive the said shaft pipe to rotate, whereof the rotating direction of the said shaft pipe can be reversed if the shifter of the said shaft pipe is switched to engage with the rack at the other side of the said actuator.

Abstract: A door lock of key-driven transmission structure which is comprised of a case, a swing arm, a first link bar and a second link bar, whereof the first and second link bars and a lock-bolt structure on the case can be driven by the said swing arm to open or close lock. A first transmission piece is driven when the said lock-bolt structure is actuated, and an actuator is driven by the said first transmission piece to further drive the two top and bottom pull rods which further drive the two top and bottom lock-bolts to extend outward for locking, thereby to reach a combining action between the lock-bolt structure as well as the top and bottom lock-bolts. The said lock-bolt structure is further through linking with a labor saving component installed on the said second link bar to achieve the labor saving and easy operation effects.

Abstract: A latch assembly for a door includes a housing composed of a base and a cover. A drive knob, two links, two hooks, two adjusting members, and two torsion springs are connected between the base and the cover. The drive knob includes a drive surface that is engaged with a straight inside portion of a through hole of the links. One of the two links is pivotably connected to an adjusting portion of the other link and retaining slot of one of the two hooks. The other link has a positioning portion that is pivotably connected to the retaining slot of the other hook. When the drive knob is rotated in a particular direction (typically counterclockwise), the two links are pivoted in opposite directions and the two hooks are pivoted in two opposite directions and extend through apertures in the first outer surface of the base to hook a keeper structure and secure the door.

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

Abstract: A latch assembly connected to a lock face of a sliding door includes two hooks which are connected to two activation plates respectively. Two rotation gears each have teeth engaged with the activation plates which are moved to pivot the two hooks when the two gears are rotated. A safety member is biased by a spring and includes a contact pin which movably extends through the lock face on the sliding door so that the safety member is pushed when the contact pin is pushed by a fixed door when the sliding door is in close position. The safety member further has an engaging pin which is removably engaged with the recess of the activation plate so that when the sliding door is in open position, the activation plate cannot be moved and the hooks are remained in the sliding door.

Abstract: A latch device for sliding windows includes a casing fixed to a sliding window and having a latch member movably received in the casing. The latch member is biased by a spring and includes two latches. A driving assembly includes a driving member from which an eccentric protrusion extends which is movably engaged with a plate of the latch member. The latch member retractably retracted through a front wall of the casing by operating the driving assembly when opening the window. The latch member includes an inclined surface which allows the latch member to be automatically retracted when closing the window without operating the handle.

Abstract: A latch assembly for sliding doors includes a case composed of a base and a cover. A driving knob, two links, two hooks, two adjusting members and two torsion springs are connected between the base and the cover. The driving knob includes a driving surface which is engaged with a straight inside of a through hole of the links. One of the two links is pivotably connected to an adjusting portion of the other link and retaining slot of one of the two hooks. The other link has its positioning portion pivotably connected to the retaining slot 502 of the other hook. By the arrangement, when rotating the driving knob counter clockwise, the two links are pivoted in opposite directions and the two hooks are pivoted in two opposite directions and extend through apertures in the top surface of the base to hook the keeper structure in the jamb or the fixed door.

Abstract: A door or window lock device includes a first part fixed to a door and a gap is defined between the door and the first part. At last one opening is defined through the first part and an adjusting member movably extends through the first part and a section of the adjusting member is located in the gap. At least one hook is pivotably connected in a second part fixed to a jamb a section of the at least one hook extends through the at least one hole so as to extend in the opening and engage with a distal end of the section of the adjusting member.

Abstract: A latch device for sliding windows includes a casing fixed to a sliding window and having a latch member movably received in the casing. The latch member is biased by a spring and includes two latches. A driving assembly includes a driving member from which an eccentric protrusion extends which is movably engaged with a plate of the latch member. The latch member retractably retracted through a front wall of the casing by operating the driving assembly when opening the window. The latch member includes an inclined surface which allows the latch member to be automatically retracted when closing the window without operating the handle.