Patents by Inventor Hui-Chu Huang
Hui-Chu Huang 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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Patent number: 7600237Abstract: A locking device for locking a main body with a lid is provided. The locking device includes a base, a fixed piece, an engaging piece, and a driver. The base is disposed on the main body. The fixed piece disposed on the base includes a track. The engaging piece slides in the track. The first end of the engaging piece is received into or separated from the recess when the engaging piece slides. The driver drives the engaging piece to slide in the track. In locking state, the engaging piece is engaged with the recess of the lid, while the lid is locked with main body. When the driver drives the engaging piece to slide along track, the first end of the engaging piece is separated from the recess of the lid for the lid to be unlocked from the main body.Type: GrantFiled: April 19, 2005Date of Patent: October 6, 2009Assignee: Lite-On It CorporationInventors: Yuan-Hung Chang, Tzu-Nan Chen, Hui-Chu Huang
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Patent number: 7281256Abstract: A disk drive includes a spacer unit mounted at one end of a roller-mounting frame for spacing a disk transport roller apart from a plate member. The spacer unit has a predetermined length greater than the greatest outer diameter of the transport roller.Type: GrantFiled: March 18, 2005Date of Patent: October 9, 2007Assignee: Lite-On It CorporationInventor: Hui-Chu Huang
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Patent number: 7197754Abstract: An apparatus for detecting an external optical disk drive's open/closed status. The apparatus includes an upper housing, a cover, a solenoid valve sub-assembly, a solenoid valve base, a solenoid valve, a hook device, a torsion spring, an elastic plate, a lower housing, and two wires. When the cover is closed, the convex portion located at the front edge of the cover presses on the torsion spring, and the torsion spring contacts the elastic plate, resulting in an electrically conductive state. When the cover is opened, the torsion spring is released, and the torsion spring disengages from the elastic plate, disconnecting the circuit.Type: GrantFiled: July 17, 2003Date of Patent: March 27, 2007Assignee: Lite-On IT CorporationInventors: Tzu-Nan Chen, Hui-Chu Huang
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Publication number: 20060059499Abstract: A disk drive includes a spacer unit mounted at one end of a roller-mounting frame for spacing a disk transport roller apart from a plate member. The spacer unit has a predetermined length greater than the greatest outer diameter of the transport roller.Type: ApplicationFiled: March 18, 2005Publication date: March 16, 2006Inventor: Hui-Chu Huang
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Publication number: 20050236849Abstract: A locking device for locking a main body with a lid is provided. The locking device includes a base, a fixed piece, an engaging piece, and a driver. The base is disposed on the main body. The fixed piece disposed on the base includes a track. The engaging piece slides in the track. The first end of the engaging piece is received into or separated from the recess when the engaging piece slides. The driver drives the engaging piece to slide in the track. In locking state, the engaging piece is engaged with the recess of the lid, while the lid is locked with main body. When the driver drives the engaging piece to slide along track, the first end of the engaging piece is separated from the recess of the lid for the lid to be unlocked from the main body.Type: ApplicationFiled: April 19, 2005Publication date: October 27, 2005Applicant: LITE-ON IT CORPORATIONInventors: Yuan-Hung Chang, Tzu-Nan Chen, Hui-Chu Huang
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Patent number: 6941568Abstract: An optical disk drive assembly. A top housing, cover, tab, solenoid switch base, solenoid switch, hook, and torsion spring work to enable securing and opening of the cover, rotatably connected to the top housing with a front edge. The tab protrudes from the front edge of the cover in the middle, and defines an opening. The solenoid switch base is disposed on the top housing and comprises a torsion spring and a spring support and defines a shaft opening. The solenoid switch is inserted at the solenoid switch base and comprises a pivot and a tension spring disposed on the pivot. The hook comprises a hook shaft, and the hook pivots on the solenoid switch with the hook shaft accommodated in the shaft opening. The torsion spring is disposed at the spring support of the solenoid switch base to open the cover.Type: GrantFiled: May 5, 2003Date of Patent: September 6, 2005Assignee: Lite-On It CorporationInventor: Hui-Chu Huang
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Publication number: 20050193400Abstract: A roller-cleansing disk includes a substrate and an electrostatic layer mounted on one side surface of the substrate. When the roller-cleansing disk is inserted into an optical recording and reproducing device provided with a roller for drawing in or ejecting a CD disk, the electrostatic layer of the substrate contacts and cleans an outer surface of the roller.Type: ApplicationFiled: February 25, 2005Publication date: September 1, 2005Inventors: Jui-Chiang Lin, Tsung-Jung Kuo, Hui-Chu Huang
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Patent number: 6785896Abstract: A locking mechanism of an external optical disk drive. The locking mechanism of an external optical disk drive with a cover and an upper housing comprises a curved extension portion, a fixing support, a gear mount, a motor, and a switch. The curved extension portion includes two posts and is positioned at the cover. The fixing support is fixed on upper housing and the cover is pivotally coupled to the upper housing. The gear mount is positioned on the upper housing and includes a gear train. The motor is fixed on the gear mount and connected to and driving the gear train. The switch sends command to stop or start the motor when any one of the posts contacts the switch.Type: GrantFiled: March 10, 2003Date of Patent: August 31, 2004Assignee: Lite-On It CorporationInventor: Hui-Chu Huang
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Patent number: 6731581Abstract: A rotating device for a cover connected to a housing of a disc drive. The rotating device includes a spring-loaded outer sleeve, a spring-loaded inner sleeve, a spring and a fixing place. The spring-loaded outer sleeve, having a first closed end and a first open end, is fixed to the cover and filled with damping material. The spring-loaded inner sleeve with the spring within has a second closed end with a key and a second open end inserted into the first open end of the spring-loaded outer sleeve. The fixing place is fixed to the housing of disc drive and includes an upper L-shaped member with an upper slot, a lower L-shaped member with a lower slot and a first end portion with a hollow to pivot the first closed end of the spring-loaded outer sleeve. The lower L-shaped member is bolted to the upper L-shaped member, and the upper slot and the lower slot are used to mesh the key of the spring-loaded inner sleeve.Type: GrantFiled: March 25, 2002Date of Patent: May 4, 2004Assignee: Lite-On IT CorporationInventor: Hui-Chu Huang
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Publication number: 20040076102Abstract: The present invention is directed to a locking mechanism for use in an external optical disk drive. The locking mechanism includes a switch supporting base, a push rod, a locking member and an electromagnetic switch. An elastic member is fitted to the push rod, and both ends of the elastic member are restrained by the push rod and the switch supporting base. To open the cover, the locking member disengages from the cover by the electromagnetic switch and the push rod pushes the cover upwardly due to the elastic member. To lock the cover, the push rod is restrained by the switch supporting base and the push rod does not contact the cover. Thus, there is no force applied to the cover, and the cover is simply restrained by the locking member.Type: ApplicationFiled: March 4, 2003Publication date: April 22, 2004Inventor: Hui-Chu Huang
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Patent number: 6717902Abstract: Lock mechanism for an optical disk drive assembly. The optical disk drive assembly includes a housing, an electromagnetic lock and a resilient piece. The housing includes a lid. The lid is locked or unlocked by the electromagnetic lock. The lid is opened by the resilient piece when the lid is unlocked.Type: GrantFiled: April 23, 2002Date of Patent: April 6, 2004Assignee: Lite-On It CorporationInventor: Hui-Chu Huang
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Publication number: 20040062172Abstract: An optical disk drive assembly. A top housing, cover, tab, solenoid switch base, solenoid switch, hook, and torsion spring work to enable securing and opening of the cover, rotatably connected to the top housing with a front edge. The tab protrudes from the front edge of the cover in the middle, and defines an opening. The solenoid switch base is disposed on the top housing and comprises a torsion spring and a spring support and defines a shaft opening. The solenoid switch is inserted at the solenoid switch base and comprises a pivot and a tension spring disposed on the pivot. The hook comprises a hook shaft, and the hook pivots on the solenoid switch with the hook shaft accommodated in the shaft opening. The torsion spring is disposed at the spring support of the solenoid switch base to open the cover.Type: ApplicationFiled: May 5, 2003Publication date: April 1, 2004Inventor: Hui-Chu Huang
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Publication number: 20040062171Abstract: A locking mechanism of an external optical disk drive. The locking mechanism of an external optical disk drive with a cover and an upper housing comprises a curved extension portion, a fixing support, a gear mount, a motor, and a switch. The curved extension portion includes two posts and is positioned at the cover. The fixing support is fixed on upper housing and the cover is pivotally coupled to the upper housing. The gear mount is positioned on the upper housing and includes a gear train. The motor is fixed on the gear mount and connected to and driving the gear train. The switch sends command to stop or start the motor when any one of the posts contacts the switch.Type: ApplicationFiled: March 10, 2003Publication date: April 1, 2004Inventor: Hui-Chu Huang
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Patent number: 6709032Abstract: A cover-locking device for an optical disk drive. The cover-locking device includes a locking protrusion and a locking mechanism. The locking protrusion is formed on the cover and is provided with a locking hole. The locking mechanism is mounted on the main body, comprising an electromagnetic switch, a hook base, a hook, a pushing part and a link. The electromagnetic switch includes an extensible magnet adapted to move between a first position and a second position. The hook is pivotally connected to the hook base to lock the locking protrusion at the locking hole, and is further pivotally connected to the extensible magnet. The pushing part is pivotally connected to the hook base, comprising a pushing end adapted to open the cover. The link is pivotally connected to the pushing part with one end and pivotally connected to the extensible magnet with another end.Type: GrantFiled: December 3, 2002Date of Patent: March 23, 2004Assignee: Lite-On It CorporationInventor: Hui-Chu Huang
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Publication number: 20040052168Abstract: An apparatus for detecting an external optical disk drive's open/closed status. The apparatus includes an upper housing, a cover, a solenoid valve sub-assembly, a solenoid valve base, a solenoid valve, a hook device, a torsion spring, an elastic plate, a lower housing, and two wires. When the cover is closed, the convex portion located at the front edge of the cover presses on the torsion spring, and the torsion spring contacts the elastic plate, resulting in an electrically conductive state. When the cover is opened, the torsion spring is released, and the torsion spring disengages from the elastic plate, disconnecting the circuit.Type: ApplicationFiled: July 17, 2003Publication date: March 18, 2004Inventors: Tzu-Nan Chen, Hui-Chu Huang
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Patent number: 6704264Abstract: An optical disk drive has a lid an emergency ejection hole. An opening is defined in the lid. The emergency ejection structure comprises a locking element having a locking hook and an ejection lever, a safety element movably disposed under the emergency ejection hole, and an electromagnetic unit for generating magnetic field to attract the safety element in the optical disk drive. The locking hook is fitted the opening and keep the lid closed. With magnetic force, electromagnetic unit attracts the safety element. The locking hook can engage with the opening when the optical disk drive is connected to electrical power that enables the electromagnetic unit to attract and hold the safety element. The locking hook can disengage from the opening when the optical disk drive is disconnected from electrical power, enabling the electromagnetic unit to release the safety element.Type: GrantFiled: August 26, 2002Date of Patent: March 9, 2004Assignee: Lite-On It CorporationInventors: Cheng-Yao Liao, Hui-Chu Huang
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Publication number: 20030152010Abstract: An optical disk drive has a lid an emergency ejection hole. An opening is defined in the lid. The emergency ejection structure comprises a locking element having a locking hook and an ejection lever, a safety element movably disposed under the emergency ejection hole, and an electromagnetic unit for generating magnetic field to attract the safety element in the optical disk drive. The locking hook is fitted the opening and keep the lid closed. With magnetic force, electromagnetic unit attracts the safety element. The locking hook can engage with the opening when the optical disk drive is connected to electrical power that enables the electromagnetic unit to attract and hold the safety element. The locking hook can disengage from the opening when the optical disk drive is disconnected from electrical power, enabling the electromagnetic unit to release the safety element.Type: ApplicationFiled: August 26, 2002Publication date: August 14, 2003Inventors: Cheng-Yao Liao, Hui-Chu Huang
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Publication number: 20030102678Abstract: A cover-locking device for an optical disk drive. The cover-locking device includes a locking protrusion and a locking mechanism. The locking protrusion is formed on the cover and is provided with a locking hole. The locking mechanism is mounted on the main body, comprising an electromagnetic switch, a hook base, a hook, a pushing part and a link. The electromagnetic switch includes an extensible magnet adapted to move between a first position and a second position. The hook is pivotally connected to the hook base to lock the locking protrusion at the locking hole, and is further pivotally connected to the extensible magnet. The pushing part is pivotally connected to the hook base, comprising a pushing end adapted to open the cover. The link is pivotally connected to the pushing part with one end and pivotally connected to the extensible magnet with another end.Type: ApplicationFiled: December 3, 2002Publication date: June 5, 2003Inventor: Hui-Chu Huang
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Publication number: 20030076763Abstract: Lock mechanism for an optical disk drive assembly. The optical disk drive assembly includes a housing, an electromagnetic lock and a resilient piece. The housing includes a lid. The lid is locked or unlocked by the electromagnetic lock. The lid is opened by the resilient piece when the lid is unlocked.Type: ApplicationFiled: April 23, 2002Publication date: April 24, 2003Inventor: Hui-Chu Huang
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Patent number: 6552993Abstract: A clamping device for optical disk driver comprises a base plate, an upper clamping body and a plurality of sliding stages. The base plate has a through hole receiving the upper clamping body. The sliding stages are arranged on the base plate and around the through hole. The base plate has a sliding block and a control rod at predetermined positions. The sliding stage has a Z shaped groove and the upper clamping body is rotated to clamp an optical disk.Type: GrantFiled: March 28, 2001Date of Patent: April 22, 2003Assignee: Lite-On It CorporationInventor: Hui-Chu Huang