Patents by Inventor Chun Kai Zheng
Chun Kai Zheng 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: 9165728Abstract: A switch with contacts includes a housing formed by snap-fit connection of an upper cover and a base, an operating lever and a movable contact holder, the operating lever and the moveable contact holder being movably-fit to one other. A stop device with a lock mechanism is provided in the housing, the lock mechanism being disposed between the stop device and the movable contact holder. An unlock mechanism is arranged between the stop device and the operating lever. The movable contact holder has positions at each of its two ends with the movable contact holder located in the positions of the two ends. The stop device and the movable contact holder are locked and stopped by the unlock mechanism.Type: GrantFiled: July 16, 2012Date of Patent: October 20, 2015Assignee: KEDU ELECTRIC CO., LTDInventor: Chun Kai Zheng
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Publication number: 20130026024Abstract: A switch with contacts includes a housing formed by snap-fit connection of an upper cover and a base, an operating lever and a movable contact holder, the operating lever and the moveable contact holder being movably-fit to one other. A stop device with a lock mechanism is provided in the housing, the lock mechanism being disposed between the stop device and the movable contact holder. An unlock mechanism is arranged between the stop device and the operating lever. The movable contact holder has positions at each of its two ends with the movable contact holder located in the positions of the two ends. The stop device and the movable contact holder are locked and stopped by the unlock mechanism.Type: ApplicationFiled: July 16, 2012Publication date: January 31, 2013Applicant: KEDU ELECTRIC CO., LTDInventor: Chun Kai Zheng
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Patent number: 8125748Abstract: A ground fault circuit interrupter which comprises a main body structure, a low friction mechanical means, an electrical circuit, a low current utilizing solenoid, all of which are located in the main body structure for (1) interrupting the flow of electrical current in the interrupter when current flows from a live or neutral line to ground, (2) indicating an end-of-life condition in the interrupter, and (3) providing protection from reverse wiring of the interrupter.Type: GrantFiled: November 19, 2008Date of Patent: February 28, 2012Assignee: Zhejiang Kedu Electric Mfg. Co. Ltd.Inventor: Chun Kai Zheng
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Patent number: 8022299Abstract: A kind of rotatory emergency stop cover with plug-in unit includes lock cover 11 having shutter 9 that contains raised block b and return spring inside, lock base 15 having groove a, stop button 4 having torsional spring; lock cover has cam 8 and torsional spring, stop button 4 has retainer 3 and plug-in unit that is passing through stop button 4 to go into cam 8 for the connection of stop button 4 to cam 8. Shape and size of unit 1 are adjusted to woke in with that of cam 8 for only use in plug-in unit 1. Plug-in unit is operable to actuate and separate synchronously stop button 4 from cam 8 to ensure that stop button 11 won't open if plug-in unit is not inserted after locking. Support plate 13 has additional hole b, with rectangular hole c being on lock cover 7; it is convenient for user to secure with a lock without removal of unit when lock cover 11 is operated. Stop button 4 has retainer 3, retainer is used to cover hole g to prevent foreign objects from falling into after removal of plug-in unit 1.Type: GrantFiled: November 19, 2008Date of Patent: September 20, 2011Assignee: Zhejiang Kedu Electric Mfg. Co. LtdInventor: Chun Kai Zheng
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Patent number: 8013246Abstract: A push-in emergency stop cover with a plug-in unit includes a retainer, a stop button, a lock cover, a lock base, a combination of a lock and lock spring assembled in the lock cover, a plug-in unit, a slide block, a push button and an associated spring, a slide block and associated spring, a groove provided in said lock cover, said plug-in unit having a key extending through an opening provided in said stop button and to one side of said slide block, the push button having a push rod provided with an inclined plane and a raised block having an inclined plane at the rear of the lock. When the plug-in unit is inserted in the stop button to separate the lock from a lockstitch of the lock base, the lock cover will open; the lock cover will not open when the plug-in unit is removed after the cover is locked. The stop button has a retainer to cover an opening in the stop button to prevent foreign obstacles from falling into the opening.Type: GrantFiled: November 19, 2008Date of Patent: September 6, 2011Assignee: Zhejiang Kedu Electric Meg. Co. LtdInventor: Chun Kai Zheng
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Publication number: 20090147416Abstract: A ground fault circuit interrupter which comprises a main body structure, a low friction mechanical means, an electrical circuit, a low current utilizing solenoid, all of which are located in the main body structure for (1) interrupting the flow of electrical current in the interrupter when current flows from a live or neutral line to ground, (2) indicating an end-of-life condition in the interrupter, and (3) providing protection from reverse wiring of the interrupter.Type: ApplicationFiled: November 19, 2008Publication date: June 11, 2009Applicant: Zhejiang Kedu Electric Manufacturing Co., LTDInventor: CHUN KAI ZHENG
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Publication number: 20090126431Abstract: A kind of rotatory emergency stop cover with plug-in unit includes lock cover 11 having shutter 9 that contains raised block b and return spring inside, lock base 15 having groove a, stop button 4 having torsional spring; lock cover has cam 8 and torsional spring, stop button 4 has retainer 3 and plug-in unit that is passing through stop button 4 to go into cam 8 for the connection of stop button 4 to cam 8. Shape and size of unit 1 are adjusted to woke in with that of cam 8 for only use in plug-in unit 1. Plug-in unit is operable to actuate and separate synchronously stop button 4 from cam 8 to ensure that stop button 11 won't open if plug-in unit is not inserted after locking. Support plate 13 has additional hole b, with rectangular hole c being on lock cover 7; it is convenient for user to secure with a lock without removal of unit when lock cover 11 is operated. Stop button 4 has retainer 3, retainer is used to cover hole g to prevent foreign objects from falling into after removal of plug-in unit 1.Type: ApplicationFiled: November 19, 2008Publication date: May 21, 2009Applicant: Zhejiang Kedu Electric Manufacturing Co. LTDInventor: CHUN KAI ZHENG
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Publication number: 20090126430Abstract: A push-in emergency stop cover with a plug-in unit includes a retainer, a stop button, a lock cover, a lock base, a combination of a lock and lock spring assembled in the lock cover, a plug-in unit, a slide block, a push button and an associated spring, a slide block and associated spring, a groove provided in said lock cover, said plug-in unit having a key extending through an opening provided in said stop button and to one side of said slide block, the push button having a push rod provided with an inclined plane and a raised block having an inclined plane at the rear of the lock. When the plug-in unit is inserted in the stop button to separate the lock from a lockstitch of the lock base, the lock cover will open; the lock cover will not open when the plug-in unit is removed after the cover is locked. The stop button has a retainer to cover an opening in the stop button to prevent foreign obstacles from falling into the opening.Type: ApplicationFiled: November 19, 2008Publication date: May 21, 2009Applicant: Zhejiang Kedu Electric Manufacturing Co. LTDInventor: CHUN KAI ZHENG
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Patent number: D596144Type: GrantFiled: May 15, 2008Date of Patent: July 14, 2009Assignee: Zhejiang Kedu Electric Manufacturing Co., LtdInventor: Chun Kai Zheng
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Patent number: D605606Type: GrantFiled: May 15, 2008Date of Patent: December 8, 2009Assignee: Zhejiang Kedu Electric Mfg. Co. LtdInventor: Chun Kai Zheng
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Patent number: D615047Type: GrantFiled: July 7, 2009Date of Patent: May 4, 2010Assignee: Zhejiang Kedu Electric Manufacturing Co. LtdInventor: Chun Kai Zheng