Patents by Inventor Tien-Kao Liu
Tien-Kao Liu 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).
-
Patent number: 11408207Abstract: A lock with a long-travel deadbolt includes a first guide member and a loop-shaped rail. A driving member is slidably mounted to the first guide member and includes a second guide member and a third guide member. A third notch is defined in an underside of the driving member. An extension plate is eccentrically and pivotably connected to the second guide member. An extension slot is defined in the extension plate and the first guide member slidably extends through the extension slot. A stop plate is pivotably connected to the third guide member and has an extension portion which has a corner protruding from a side thereof. The third notch and the corner are located at the rail. When rotating the core, the first guide member moves from one end of the extension slot to the other end of the extension slot, the deadbolt travels at least 22 mm.Type: GrantFiled: March 5, 2019Date of Patent: August 9, 2022Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 11384569Abstract: A lock with replaceable modules includes a first part and a second part which is connected to the first part. The lock has a latch bolt recess, a restriction recess and a deadbolt recess so as to selectively install a latch bolt, a restriction bolt and a deadbolt. A lock block is selectively installed in the restriction recess. The lock includes an installation slot which can be selectively oriented in different directions, and a core recess for receiving the deadbolt. The lock is selectively installed with different components by features of modularization and normalization so as to reduce inventory pressure. The customers may install the lock to entrance doors, gate doors, storage room doors, emergency doors, room doors, bathroom doors or the like.Type: GrantFiled: March 5, 2019Date of Patent: July 12, 2022Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 11261619Abstract: A lock with a roller deadbolt includes a driving member having a first slot and a transverse slot. The driving member is connected to a first spring, a second spring and a positioning rod. A deadbolt includes a body, an insertion member, a roller and a slide. The driving member is connected to the body. The insertion member is received in the body. The second spring biases the insertion member. The slide is restricted by the positioning rods of the driving member and has a first guide pin extending through the first slot. The slide is movable along the first slot. The guide hole includes an extension slot and an inclined slot which inclinedly communicates with the extension slot. When in a non-transmission position, the roller protrudes beyond the receiving space. When in the transmission position, the roller does not protrude beyond the receiving space.Type: GrantFiled: March 5, 2019Date of Patent: March 1, 2022Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 11124993Abstract: A lock with an emergency unlocking feature includes a latch bolt, a top rotation member, a restriction plate and a driving member. The driving member is connected to the deadbolt. When the top rotation member is rotated from a close position to an open position while the lock is locked, a restriction member drives the restriction plate to press a resilient unit. The restriction plate is moved to disengage the engaging member on the restriction plate from the second notch of the driving member. The guide slot of the transmission plate pulls the second guide member to move the deadbolt to the unlocked position, and the latch bolt moves to the open position. When in an emergency situation, the user rotates the handle to retract both of the deadbolt and the latch bolt without using a key to unlock the deadbolt to save time.Type: GrantFiled: March 5, 2019Date of Patent: September 21, 2021Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 10934745Abstract: A core replaceable hockey lock includes a first end face and a second end face. The first end face includes a first cavity, a second cavity, a third cavity and a fourth cavity. The end face includes a core hole which communicates with the second cavity. A lateral hole is defined radially in the lock and communicates with the first and fourth cavities. A locking member is located in the second cavity and includes a connection portion connected to the transmission portion, and a stop plate which slides in the third cavity when the locking member is rotated. A locking part is located in the fourth cavity. A shackle is located in the lateral hole and includes a neck located corresponding to the fourth cavity and the locking part. The first cavity and the core hole are parallel to each other. The core is replaceable by removing the cover.Type: GrantFiled: January 16, 2019Date of Patent: March 2, 2021Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Publication number: 20200224459Abstract: A core replaceable hockey lock includes a first end face and a second end face. The first end face includes a first cavity, a second cavity, a third cavity and a fourth cavity. The end face includes a core hole which communicates with the second cavity. A lateral hole is defined radially in the lock and communicates with the first and fourth cavities. A locking member is located in the second cavity and includes a connection portion connected to the transmission portion, and a stop plate which slides in the third cavity when the locking member is rotated. A locking part is located in the fourth cavity. A shackle is located in the lateral hole and includes a neck located corresponding to the fourth cavity and the locking part. The first cavity and the core hole are parallel to each other. The core is replaceable by removing the cover.Type: ApplicationFiled: January 16, 2019Publication date: July 16, 2020Inventor: TIEN-KAO LIU
-
Publication number: 20200157850Abstract: A lock with an emergency unlocking feature includes a latch bolt, a top rotation member, a restriction plate and a driving member. The driving member is connected to the deadbolt. When the top rotation member is rotated from a close position to an open position while the lock is locked, a restriction member drives the restriction plate to press a resilient unit. The restriction plate is moved to disengage the engaging member on the restriction plate from the second notch of the driving member. The guide slot of the transmission plate pulls the second guide member to move the deadbolt to the unlocked position, and the latch bolt moves to the open position. When in an emergency situation, the user rotates the handle to retract both of the deadbolt and the latch bolt without using a key to unlock the deadbolt to save time.Type: ApplicationFiled: March 5, 2019Publication date: May 21, 2020Inventor: TIEN-KAO LIU
-
Publication number: 20200157848Abstract: A lock with replaceable modules includes a first part and a second part which is connected to the first part. The lock has a latch bolt recess, a restriction recess and a deadbolt recess so as to selectively install a latch bolt, a restriction bolt and a deadbolt. A lock block is selectively installed in the restriction recess. The lock includes an installation slot which can be selectively oriented in different directions, and a core recess for receiving the deadbolt. The lock is selectively installed with different components by features of modularization and normalization so as to reduce inventory pressure. The customers may install the lock to entrance doors, gate doors, storage room doors, emergency doors, room doors, bathroom doors or the like.Type: ApplicationFiled: March 5, 2019Publication date: May 21, 2020Inventor: TIEN-KAO LIU
-
Publication number: 20200157843Abstract: A lock with a roller deadbolt includes a driving member having a first slot and a transverse slot. The driving member is connected to a first spring, a second spring and a positioning rod. A deadbolt includes a body, an insertion member, a roller and a slide. The driving member is connected to the body. The insertion member is received in the body. The second spring biases the insertion member. The slide is restricted by the positioning rods of the driving member and has a first guide pin extending through the first slot. The slide is movable along the first slot. The guide hole includes an extension slot and an inclined slot which inclinedly communicates with the extension slot. When in a non-transmission position, the roller protrudes beyond the receiving space. When in the transmission position, the roller does not protrude beyond the receiving space.Type: ApplicationFiled: March 5, 2019Publication date: May 21, 2020Inventor: Tien-Kao Liu
-
Publication number: 20200157847Abstract: A lock with a long-travel deadbolt includes a first guide member and a loop-shaped rail. A driving member is slidably mounted to the first guide member and includes a second guide member and a third guide member. A third notch is defined in an underside of the driving member. An extension plate is eccentrically and pivotably connected to the second guide member. An extension slot is defined in the extension plate and the first guide member slidably extends through the extension slot. A stop plate is pivotably connected to the third guide member and has an extension portion which has a corner protruding from a side thereof. The third notch and the corner are located at the rail. When rotating the core, the first guide member moves from one end of the extension slot to the other end of the extension slot, the deadbolt travels at least 22 mm.Type: ApplicationFiled: March 5, 2019Publication date: May 21, 2020Inventor: TIEN-KAO LIU
-
Patent number: 9683390Abstract: A lock includes a housing in which a combination lock is received. The combination lock is unlocked when the combination unit of the combination lock is located at an unlocked position. The combination lock has a cam pin which is operated when the combination lock is unlocked and locked. A button is pushed to drive a cam which is located beside the combination lock. When the combination lock is locked, the cam pin is connected to the restriction hole to restrict the cam, and the latch is in its locked status. When the combination lock is unlocked, the cam pin is removed from the restriction hole. When the button is pushed, the cam is rotated to release the latch from the room of the housing. The combination of the combination lock can be changed by operating the operation bar when the combination lock is unlocked.Type: GrantFiled: February 24, 2016Date of Patent: June 20, 2017Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 9631398Abstract: A lock includes a housing and a pivot is located in the insertion hole of the housing and has the first end thereof connected with a slide. A spring is received in the insertion hole, biases the second end of the pivot. When the slide is positioned at a close position, the slide is applied by the resilient force of the spring as to cover the installation recess so as to prevent dust and water from entering the core. When the slide is positioned at an open position, the slide is applied by a force to overcome the resilient force of the spring, and at least one portion of the slide does not cover the installation recess for convenience of unlocking the lock or replacement of the core. The housing includes a positioning member which positions the cover at open and close positions of the slide.Type: GrantFiled: July 27, 2016Date of Patent: April 25, 2017Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 9587416Abstract: A lock includes a housing having an insertion hole in which a pivot is inserted. A slide is connected to one end of the pivot. A spring is located in the insertion hole and applies a first resilient force toward the insertion hole, and a second resilient force toward a direction that the slide pivots. When the slide is located at a first position, the installation recess is covered by the slide to prevent water and dust from entering into the installation recess. When the slide located at a second position, at least one portion of the slide does not cover the installation recess to allow the lock to be unlocked. When the slide located at a third position, the slide is located higher than the first end face of the protrusion and is pivotable so that the installation recess is explored for convenience of replacement of the core.Type: GrantFiled: July 27, 2016Date of Patent: March 7, 2017Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 9464462Abstract: A padlock includes a body having a first recess in the top thereof. A slide slot is defined in one side of the body and communicates with the first recess. A slide is located in the slide slot and movable between a locked position and an unlocked position. The slide protrudes beyond the body when the slide is located at the locked position, and is retracted into the body when the slide is located at the unlocked position. A housing is mounted to the body and has a first hole defined in the inside thereof. Two second holes are defined in the top of the housing. The slide is located in the first hole when the slide is located at the locked position. The slide can be moved and separated from the housing to replace the shackle and the cylinder when the padlock is unlocked.Type: GrantFiled: October 30, 2015Date of Patent: October 11, 2016Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Publication number: 20160002958Abstract: A water-dust-proof case for a lock includes a case with a bottom plate connected to the bottom thereof. The bottom plate has a through hole and a guide slot. The case having a slide slot which is located corresponding to the through hole and the guide slot. A slide is connected to the bottom plate and has a covering portion which is used to cover the through hole and the guide slot. The covering portion has an extension portion which is located corresponding to the guide slot. The extension portion has a neck which is slidable relative to the guide slot so as to move the covering portion to cover the through hole such that water and dust are prevented from entering the lock to case the core stocked.Type: ApplicationFiled: July 7, 2014Publication date: January 7, 2016Inventor: TIEN-KAO LIU
-
Patent number: 9169051Abstract: A package includes a body with a key position and a lock position on one side thereof, and multiple positioning members on the other side of the body. The positioning members position a card. The body has at least one installation hole which has at least one contact portion. A hasp has at least one contact member. When the hasp extends through the at least one installation hole, the contact member is engaged with the at least one contact portion. The shackle of the lock is connected to the hasp and the hasp is adjustable relative to the installation hole according to the size of the lock. The body and hasp are modularized so as to be cooperated with different locks and reduce manufacturing cost.Type: GrantFiled: November 8, 2013Date of Patent: October 27, 2015Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Publication number: 20150129458Abstract: A package includes a body with a key position and a lock position on one side thereof, and multiple positioning members on the other side of the body. The positioning members position a card. The body has at least one installation hole which has at least one contact portion. A hasp has at least one contact member. When the hasp extends through the at least one installation hole, the contact member is engaged with the at least one contact portion. The shackle of the lock is connected to the hasp and the hasp is adjustable relative to the installation hole according to the size of the lock. The body and hasp are modularized so as to be cooperated with different locks and reduce manufacturing cost.Type: ApplicationFiled: November 8, 2013Publication date: May 14, 2015Applicant: Federal Lock Co., Ltd.Inventor: TIEN-KAO LIU
-
Patent number: 8919156Abstract: A core replaceable hockey lock includes a housing having a space defined therein. An installation hole is defined in one end thereof and a slit is defined in the inner periphery of the installation hole. An insertion hole is defined in the housing and communicates with the slit. A deadbolt is rotatably installed in the installation hole and has a recess which is located corresponding to the slit. The deadbolt has at least one passive member connected thereto which is located in one end of the housing. A positioning plate is inserted in the slit and the recess to axially position the deadbolt. A positioning pin is inserted into the insertion hole and positions the positioning plate. The hockey lock can use different cores installed therein such as six-bead core, seven-bead core or bead-replaceable core. The user needs only one key to unlock all of the hockey locks.Type: GrantFiled: February 21, 2014Date of Patent: December 30, 2014Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 8904833Abstract: A lock includes a shackle having a short first portion, a long second portion and a curved portion. The second portion has a groove defined in outside thereof. A body has a first hole and a second hole for receiving the first and second portions respectively. A passage is defined in outside of the body and perpendicularly communicates with the second hole. A positioning unit is located in the passage and has a securing member, a pin and a resilient member. The securing member has a path in which a narrowed section of the pin is inserted. The resilient member biases the pin which is engaged with the groove. When the pin is moved to compress the resilient member, the pin is removed from the groove and the narrowed section is located corresponding to the groove so that the second portion can be removed from the second hole.Type: GrantFiled: July 22, 2013Date of Patent: December 9, 2014Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu
-
Patent number: 8707746Abstract: A lock includes a housing having an axial space and multiple radial top pin holes. Multiple through holes are defined through the housing and located corresponding to the space. A core is located in the space and has multiple radial bottom pin holes which communicate with the top pin holes respectively. A key hole is defined in the first end of the core and a connection member is connected to the second end of the core. The key hole communicates with the bottom pin holes. The housing has a connection portion located corresponding to the connection member. The through holes are located alternatively to the bottom pin holes. When the bottom pin holes are rotated to the through holes and the core moves axially, the connection member is connected to the connection portion. The through holes communicate with the bottom pin holes.Type: GrantFiled: January 28, 2013Date of Patent: April 29, 2014Assignee: Federal Lock Co., Ltd.Inventor: Tien-Kao Liu