Patents by Inventor Leo Lai
Leo Lai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200011086Abstract: A suitcase combination lock includes a locking element and a password element for controlling the movement of the locking element. Both ends of the password element have the locking element, and a swingable adapter installed between the two locking elements, and the two locking elements are connected to both ends of the adapter respectively, so that the two locking elements can jointly drive the adapter to swing, and the two locking assemblies are linked with each other. The two locking assemblies can move outwardly or inwardly at the same time. If the password is correct, and a position of the suitcase with one of the locking elements is hit, a single locking element cannot be moved easily to prevent a lock hook of the locking element from being rotated, and prevent a lock failure of the locking assembly.Type: ApplicationFiled: December 12, 2017Publication date: January 9, 2020Inventors: Leo LAI, Jinghui GUO
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Publication number: 20190085598Abstract: A thin padlock with simple and convenient operation includes a lock hook, a lock buckle and a lock cylinder module capable of locking the padlock. The lock cylinder module is embedded into a box; a small portion of the lock cylinder module is protruded from the outer surface of the box, so that the thickness of the padlock protruding to the outside of the box is reduced, and the padlock will not be damage by external forces easily. In an unlock process, the lock cylinder module slides with respect to the box and drives the lock hook to move and be separated from the lock buckle. The lock cylinder module integrates a pressing unlock function to skip the pressing action, thus not just reducing the thickness of the padlock protruding to the outside of the box only, but also allowing users to operate the lock cylinder module by a finger to unlock the padlock and improve the convenience of operating the padlock.Type: ApplicationFiled: December 14, 2017Publication date: March 21, 2019Inventor: Leo LAI
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Patent number: 10041274Abstract: A mechanical composite lock includes a bottom plate and an upper shell, wherein an accommodation space is formed between the bottom plate and the upper shell; the accommodation space is provided with two groups of locking hooks; an inserting hole is formed in the upper shell; two moving pieces are arranged in the accommodation space; the opening directions of the two groups of locking hooks are opposite to each other; a middle transmission mechanism, a lock cylinder device and a password device are arranged in the accommodation space; the middle transmission mechanism is connected with the moving pieces respectively; the accommodation space is provided with a moving space; the lock cylinder device and the password device are respectively connected with the middle transmission mechanism; the lock can be opened at one time through the lock cylinder device and can also be sequentially opened through the password device.Type: GrantFiled: April 19, 2015Date of Patent: August 7, 2018Assignee: YIFENG MANUFACTURING CO., LTD.Inventor: Leo Lai
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Patent number: 9845616Abstract: A lockset comprises an upper shell and a bottom plate which are fixedly connected to each other. An accommodating space is formed between the upper shell and the bottom plate. A jack is provided on the surface of the upper shell. A locking mechanism is provided within the accommodating space. The locking mechanism comprises a locking hook fitted with the jack and a control device for controlling the locking hook to move. The locking hook comprises a hook portion accessible to the underneath of the jack and a connection portion controlled by the control device. When a code is correct, the hook portion may move toward one side of the jack; and, when the code is wrong, the connection portion is limited by the control device, and the hook portion is limited underneath the jack.Type: GrantFiled: December 18, 2014Date of Patent: December 19, 2017Assignee: YIFENG MANUFACTURING CO., LTD.Inventor: Leo Lai
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Patent number: 9809998Abstract: A lock comprises an upper casing and a base plate connected to each other; between the upper casing and the base plate there is an accommodation space in which the locking device is. The locking device consists of a locking hook coordinated with the receiving hole at the top surface of the upper casing and a control unit to control the movement of the locking hook. The locking hook has a hook portion which can access the bottom end of the receiving hole and a connecting portion controlled by the control unit. At the left side of the receiving hole which the hook portion faces to, there is a side plate comprising an inclined upper part and a vertical part at the lower end, and the inclined part tilt outward towards the top surface of the receiving hole for locking two zipper pull tabs together conveniently.Type: GrantFiled: April 19, 2015Date of Patent: November 7, 2017Assignee: YIFENG MANUFACTURING CO., LTD.Inventor: Leo Lai
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Publication number: 20170306650Abstract: A lockset comprises an upper shell and a bottom plate which are fixedly connected to each other. An accommodating space is formed between the upper shell and the bottom plate. A jack is provided on the surface of the upper shell. A locking mechanism is provided within the accommodating space. The locking mechanism comprises a locking hook fitted with the jack and a control device for controlling the locking hook to move. The locking hook comprises a hook portion accessible to the underneath of the jack and a connection portion controlled by the control device. When a code is correct, the hook portion may move toward one side of the jack; and, when the code is wrong, the connection portion is limited by the control device, and the hook portion is limited underneath the jack.Type: ApplicationFiled: December 18, 2014Publication date: October 26, 2017Inventor: Leo LAI
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Patent number: 9714526Abstract: A code combination lock comprises a lock body whereto a first latch hook and a second latch hook are connected, a first catch 18 fixed in the first opening direction of the case, a second catch 19 fixed in the second opening direction of the case. When locked, the first latch hook engages with the first catch and the second latch hook engages with the second catch. The code combination lock further comprises a push module, a drive module, a lock blade and a code module. The code module is arranged to push the lock blade to fix or unfix the push module such that the push module could push the drive module to lock/unlock. With this kind of code combination lock, one can lock/unlock without having to put in code repeatedly.Type: GrantFiled: April 27, 2015Date of Patent: July 25, 2017Assignee: YIFENG MANUFACTURING CO., LTD.Inventor: Leo Lai
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Publication number: 20160356063Abstract: A simple mechanical lock comprises a lock shell and a lock rod. The lock shell has a lock part, a lock block and a lock core inside. One end of the lock rod is a lock hook, and the other end of the lock rod is provided with a locking device. The lock core is provided with a withstanding convex block, and said lock block is provided with an unlock groove for the insertion of said withstanding convex block to lock and unlock.Type: ApplicationFiled: April 19, 2015Publication date: December 8, 2016Applicant: Yifeng Manufacturing Co., Ltd.Inventor: Leo LAI
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Publication number: 20160290008Abstract: A code combination lock comprises a lock body whereto a first latch hook and a second latch hook are connected, a first catch 18 fixed in the first opening direction of the case, a second catch 19 fixed in the second opening direction of the case. When locked, the first latch hook engages with the first catch and the second latch hook engages with the second catch. The code combination lock further comprises a push module, a drive module, a lock blade and a code module. The code module is arranged to push the lock blade to fix or unfix the push module such that the push module could push the drive module to lock/unlock. With this kind of code combination lock, one can lock/unlock without having to put in code repeatedly.Type: ApplicationFiled: April 27, 2015Publication date: October 6, 2016Inventor: Leo LAI
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Publication number: 20160290014Abstract: A luggage fixing lock comprises a shell fixed to a luggage, wherein the shell is provided with a lock body, the lock body is provided with a switch element for controlling the luggage body to be opened or closed. The luggage fixing lock also comprises a locking mechanism for locking a cover board, and the switch element is in linked connection with the locking mechanism. When the lock body is unlocked, the switch element can drive the locking mechanism to be unlocked, and one end of the cover board can be separated from the luggage body. When the lock body is locked, the switch element is limited. The luggage fixing lock is simple in structure, the luggage body and the cover board can be controlled at the same time, and use is convenient.Type: ApplicationFiled: April 27, 2015Publication date: October 6, 2016Inventor: Leo Lai
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Publication number: 20160222697Abstract: A lock comprises an upper casing and a base plate connected to each other; between the upper casing and the base plate there is an accommodation space in which the locking device is. The locking device consists of a locking hook coordinated with the receiving hole at the top surface of the upper casing and a control unit to control the movement of the locking hook. The locking hook has a hook portion which can access the bottom end of the receiving hole and a connecting portion controlled by the control unit. At the left side of the receiving hole which the hook portion faces to, there is a side plate comprising an inclined upper part and a vertical part at the lower end, and the inclined part tilt outward towards the top surface of the receiving hole for locking two zipper pull tabs together conveniently.Type: ApplicationFiled: April 19, 2015Publication date: August 4, 2016Applicant: YIFENG MANUFACTURING CO., LTD.Inventor: Leo LAI
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Publication number: 20160215523Abstract: A mechanical composite lock includes a bottom plate and an upper shell, wherein an accommodation space is formed between the bottom plate and the upper shell; the accommodation space is provided with two groups of locking hooks; an inserting hole is formed in the upper shell; two moving pieces are arranged in the accommodation space; the opening directions of the two groups of locking hooks are opposite to each other; a middle transmission mechanism, a lock cylinder device and a password device are arranged in the accommodation space; the middle transmission mechanism is connected with the moving pieces respectively; the accommodation space is provided with a moving space; the lock cylinder device and the password device are respectively connected with the middle transmission mechanism; the lock can be opened at one time through the lock cylinder device and can also be sequentially opened through the password device.Type: ApplicationFiled: April 19, 2015Publication date: July 28, 2016Inventor: Leo LAI
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Publication number: 20150330104Abstract: A coded lock comprises a base plate and a housing which are fixedly connected with each other; the base plate is provided with a password mechanism, a key lock assembly and latch hook assemblies and further includes a clutch block and a push switch; the push switch is connected with the latch hook assemblies; the clutch block is clamped with the push switch and may perform longitudinal movement relative to the push switch; the key lock assembly is provided with a driving rod for driving the clutch block to perform longitudinal movement; the password mechanism is provided with a movable plate which is provided with a clamping groove clamped with the clutch block; the coded lock is provided with an elastic member for pushing the clutch block towards the clamping groove; and in the case of password unlocking, the movable plate moves and pushes the clutch block away from the clamping groove.Type: ApplicationFiled: May 13, 2014Publication date: November 19, 2015Applicant: YIFENG MANUFACTURING CO., LTD.Inventor: Leo LAI
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Patent number: 8943862Abstract: The invention relates a composite coded lock for a bag, said lock comprises a central lock hook in the middle, at least one side lock hook, a bottom shell, a locking device, a clamping device and a linkage, wherein the locking device is fixed on a casing and has a key lock and a coded lock; the coded lock has a controlled lock blade which has a limiting portion; the limiting portion is controlled by the key lock and the coded lock to move between an unlocking position and a locking position; the clamping device has a clamping pedestal fixed on one side of the bottom shell; the clamping pedestal is provided with a locking piece clamped with the side lock hook and a push and control block used for controlling the movement of the locking piece; the linkage is arranged on the bottom shell.Type: GrantFiled: August 27, 2012Date of Patent: February 3, 2015Assignee: Yifeng Manufacturing Co., Ltd.Inventor: Leo Lai
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Publication number: 20140250952Abstract: A key coded lock wherein the casing has a bottom shell and a surface shell; the cipher device is arranged on the left of the upper end face of the bottom shell; the lockset is arranged on the right of the upper end face of the bottom shell; the cipher device has a plurality of password wheels and a plurality of password adjustment wheels; the latch hook has a first straightline section, a bending section and a second straightline section; clamping grooves are formed on inner side faces of the password wheels; the lockset has a lock core, a sleeve and a latch hook sleeve; the lower end of the sleeve is connected with the lock core and the upper end of the sleeve is an open end and provided with an internal thread; a threaded rod engaged with the sleeve is formed on the latch hook sleeve.Type: ApplicationFiled: December 30, 2011Publication date: September 11, 2014Inventor: Leo Lai
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Publication number: 20140033775Abstract: The invention relates a composite coded lock for a bag, said lock comprises a central lock hook in the middle, at least one side lock hook, a bottom shell, a locking device, a clamping device and a linkage, wherein the locking device is fixed on a casing and has a key lock and a coded lock; the coded lock has a controlled lock blade which has a limiting portion; the limiting portion is controlled by the key lock and the coded lock to move between an unlocking position and a locking position; the clamping device has a clamping pedestal fixed on one side of the bottom shell; the clamping pedestal is provided with a locking piece clamped with the side lock hook and a push and control block used for controlling the movement of the locking piece; the linkage is arranged on the bottom shell.Type: ApplicationFiled: August 27, 2012Publication date: February 6, 2014Inventor: Leo LAI
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Publication number: 20120073096Abstract: The invention relates to the technical field of insert buckles, in particular to an insert buckle head and an insert buckle, wherein one end of the insert buckle head is an inserting end; left and right sides of the inserting end are slidably provided with a detachable buckle pin respectively; and the insert buckle comprises an insert buckle body and the insert buckle head which are inserted, buckled and matched with each other. The insert buckle head and the insert buckle have the advantages that: as the insert buckle head in the insert buckle adopts the detachable buckle pins, the buckle pins are difficult to break off or damage; the insert buckle head can be maintained; and the buckle pins can be replaced.Type: ApplicationFiled: May 24, 2010Publication date: March 29, 2012Applicant: YIFENG MANUFACTURING CO., LTD.Inventor: Leo Lai
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Patent number: 7993823Abstract: The present invention is directed toward biomarkers that identify characteristics of algae. The invention is further directed toward biomarkers that serve to identify algae species and strains of algae species as well as detect the presence of algal toxins. Additional embodiments feature methods utilizing algal biomarkers and polypeptides that can serve as biomarkers.Type: GrantFiled: June 15, 2007Date of Patent: August 9, 2011Assignee: The Hong Kong Polytechnic UniversityInventors: Samuel Chun-Lap Lo, Leo Lai Chan, Ivor John Hodgkiss
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Publication number: 20110138867Abstract: The present invention relates to the technical field of coded locks, in particular to a fixed coded lock. The fixed coded lock comprises a casing, a latch hook return device that is used to push the front end portion of a latch hook into the casing is arranged inside the casing; the middle portion of the latch hook return device is hinged to the casing, and the latch hook return device respectively extends to form a pushing portion and a pressing portion respectively from the hinge point; the pushing portion pushes against the latch hook, and the pressing portion extends outside the casing; the front end portion of the latch hook is withdrawn into the casing through the latch hook return device which is manufactured by applying the lever principle, and the latch hook is withdrawn into the casing by pressing a key, so that unlocking becomes easier and more labor-saving for users.Type: ApplicationFiled: December 1, 2008Publication date: June 16, 2011Inventor: Leo Lai
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Patent number: 7927788Abstract: The present invention is directed toward biomarkers that identify characteristics of algae. The invention is further directed toward biomarkers that serve to identify algae species and strains of algae species as well as detect the presence of algal toxins. Additional embodiments feature methods utilizing algal biomarkers and polypeptides that can serve as biomarkers.Type: GrantFiled: June 15, 2007Date of Patent: April 19, 2011Assignee: The Hong Kong Polytechnic UniversityInventors: Samuel Chun-Lap Lo, Leo Lai Chan, Ivor John Hodgkiss