Patents by Inventor Pui-Kuong Lui
Pui-Kuong Lui 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: 8428492Abstract: A connection assembly of the photo-conductor drum is applied for linking a driving shaft. The connection assembly of the photo-conductor drum includes a drum gear and a connector. A first connection part arranged at an end of the drum gear. An end of the connector forms a second connection part corresponding to the first connection part. Another end of the connector forms a joint end. The joint end includes a central pillar, and a plurality of protrusions extending from a periphery of the central pillar. The second connection part could detachably connect to the first connection part. The joint end is detachably connected to the driving shaft. Therefore, by replacing the damaged drum gear or damaged connector only, the costs, quantity of the waste and the maintenance expend would be reduced.Type: GrantFiled: September 1, 2010Date of Patent: April 23, 2013Assignee: Techno Enterprise LimitedInventor: Pui-Kuong Lui
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Publication number: 20120051787Abstract: A connection assembly of the photo-conductor drum is applied for linking a driving shaft. The connection assembly of the photo-conductor drum includes a drum gear and a connector. A first connection part arranged at an end of the drum gear. An end of the connector forms a second connection part corresponding to the first connection part. Another end of the connector forms a joint end. The joint end includes a central pillar, and a plurality of protrusions extending from a periphery of the central pillar. The second connection part could detachably connect to the first connection part. The joint end is detachably connected to the driving shaft. Therefore, by replacing the damaged drum gear or damaged connector only, the costs, quantity of the waste and the maintenance expend would be reduced.Type: ApplicationFiled: September 1, 2010Publication date: March 1, 2012Applicant: TECHNO ENTERPRISE LIMITEDInventor: PUI-KUONG LUI
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Publication number: 20070222835Abstract: An ink cartridge includes a hollow ink tank body, a cover connected to a top of the hollow ink tank body; a pressure regulator arranged inside the hollow ink tank body, and a sealing ring enclosing a supply port of the hollow ink tank body. The hollow ink tank body defines a chamber therein, and the supply port is formed on a bottom thereof. The cover has an air vent penetrating therethrough and a handling member pivoted to a top surface thereof and rotatable for manipulation. The pressure regulator is connected to a hollow tube communicating with the air vent of the cover, so that atmospheric air passes through the pressure regulator via the hollow tube after a sealing film is removed. The sealing ring is made of elastic material to ease for penetration with a small aperture that can be shrunk to secure ink flow from the supply port.Type: ApplicationFiled: March 27, 2006Publication date: September 27, 2007Inventor: Pui-Kuong Lui
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Patent number: 7255431Abstract: An ink cartridge is disclosed and includes a hollow ink tank body, a cover member connected to the body, a pressure regulator mounted on the bottom of the body, a tank disposed under the body and connected to the bottom thereof, and a hollow tube. The body is defined with a cavity therein and an outlet port formed on a bottom thereof. The cover member has a filling inlet and an air vent formed thereon. The tank corresponds to and communicates with the pressure regulator, and further has a venthole and a porous member disposed therein. The hollow tube communicates with the air vent of the cover member and the venthole of the tank. Therefore, the atmospheric air passes into the body via the hollow tube and the tank.Type: GrantFiled: March 30, 2005Date of Patent: August 14, 2007Assignee: Monitek Electronics LimitedInventor: Pui-Kuong Lui
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Patent number: 7255432Abstract: An ink cartridge includes a hollow ink tank body, a cover member connected to the hollow ink tank body, a hollow tube and a pressure regulator arranged inside the hollow ink tank body. The cover member has an air vent penetrating therethrough, and a first through-hole protrusion adjacent to the air vent and extending forwards the hollow ink tank body. The pressure regulator includes a holder, a resilient member arranged inside the holder, an elastic plate connected to the resilient member and abutting against the holder, a secure member disposed over the elastic plate, and a thin film covered the secure member. The pressure regulator further has a through-hole projection extending outwardly therefrom for connecting the hollow tube that connects to the first through-hole protrusion of the cover, so that the atmospheric air passes through the pressure regulator via the hollow tube after a sealing film is removed.Type: GrantFiled: March 30, 2005Date of Patent: August 14, 2007Assignee: Monitek Electronics LimitedInventor: Pui-Kuong Lui
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Patent number: 7175267Abstract: An ink cartridge adapted for an ink jet printer includes a housing, a top cover and an ink porous member. The housing has a bottom wall, a plurality of upstanding side walls extending from edges of the bottom wall, a plurality of upstanding baffles extending from a middle of the bottom wall to define an inner chamber and an outer chamber and an ink outlet port in communication with the inner chamber for containing ink therein. The ink porous member is arranged within the inner chamber of the housing for being impregnated with the ink, and the ink is filled in the outer chamber thereby to storage with a higher quantity of ink.Type: GrantFiled: May 5, 2004Date of Patent: February 13, 2007Assignee: Monitek Electronics LimitedInventor: Pui Kuong Lui
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Publication number: 20060227187Abstract: An ink cartridge is disclosed and includes a hollow ink tank body, a cover member connected to the body, a pressure regulator mounted on the bottom of the body, a tank disposed under the body and connected to the bottom thereof, and a hollow tube. The body is defined with a cavity therein and an outlet port formed on a bottom thereof. The cover member has a filling inlet and an air vent formed thereon. The tank corresponds to and communicates with the pressure regulator, and further has a venthole and a porous member disposed therein. The hollow tube communicates with the air vent of the cover member and the venthole of the tank. Therefore, the atmospheric air passes into the body via the hollow tube and the tank.Type: ApplicationFiled: March 30, 2005Publication date: October 12, 2006Inventor: Pui-Kuong Lui
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Publication number: 20060227188Abstract: An ink cartridge includes a hollow ink tank body, a cover member connected to the hollow ink tank body, a hollow tube and a pressure regulator arranged inside the hollow ink tank body. The cover member has an air vent penetrating therethrough, and a first through-hole protrusion adjacent to the air vent and extending forwards the hollow ink tank body. The pressure regulator includes a holder, a resilient member arranged inside the holder, an elastic plate connected to the resilient member and abutting against the holder, a secure member disposed over the elastic plate, and a thin film covered the secure member. The pressure regulator further has a through-hole projection extending outwardly therefrom for connecting the hollow tube that connects to he first through-hole protrusion of the cover, so that the atmospheric air passes through the pressure regulator via the hollow tube after a sealing film is removed.Type: ApplicationFiled: March 30, 2005Publication date: October 12, 2006Inventor: Pui-Kuong Lui
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Patent number: 6783219Abstract: An ink cartridge includes a hollow ink tank body defining an accommodating chamber therein. The ink tank body has an ink outlet port and a mounted seat being formed on a bottom surface thereof. A cover member has an ink filling inlet formed therein. The cover member is fixedly secured to the hollow ink tank body and sealing the accommodating chamber of said hollow ink tank body. A pressure regulator is mounted on the mounted seat and has a box body, an elastic member, and a cover body. As a result of a negative pressure will increase during printing, the elastic member will change its shape and allow air pass through it unidirectional, and because the elastic member has an elastic force, the ink tank still maintains a certain amount of negative pressure and thereof the ink will not leak through the pressure regulator to outside.Type: GrantFiled: November 27, 2002Date of Patent: August 31, 2004Assignee: Monitek Electronics LimitedInventors: Pui Kuong Lui, Zhao Hui Tang, Yiu Cheong Law
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Patent number: 6761441Abstract: An ink cartridge includes an ink tank body for receiving an ink porous member which is a foam material for absorbing ink, a cover body for being covered with the ink tank body, an ink outlet port protruded outwardly from an outer surface of the ink tank body, and a stopping member arranged in the ink outlet port for receiving an ink delivery needle which the ink is flowed into; wherein the ink porous member has a substantially planar bottom surface relative to a substantially planar bottom surface of the tank body and is dimensioned to substantially fill the accommodating chamber in an uncompressed manner for efficiently supplying ink to the ink delivery needle.Type: GrantFiled: October 18, 2002Date of Patent: July 13, 2004Assignee: Monitek Electronics LimitedInventor: Pui Kuong Lui
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Publication number: 20040100537Abstract: An ink cartridge includes a hollow ink tank body defining an accommodating chamber therein. The ink tank body has an ink outlet port and a mounted seat being formed on a bottom surface thereof. A cover member has an ink filling inlet formed therein. The cover member is fixedly secured to the hollow ink tank body and sealing the accommodating chamber of said hollow ink tank body. A pressure regulator is mounted on the mounted seat and has a box body, an elastic member, and a cover body. As a result of a negative pressure will increase during printing, the elastic member will change its shape and allow air pass through it unidirectional, and because the elastic member has an elastic force, the ink tank still maintains a certain amount of negative pressure and thereof the ink will not leak through the pressure regulator to outside.Type: ApplicationFiled: November 27, 2002Publication date: May 27, 2004Inventors: Pui Kuong Lui, Zhao Hui Tang, Yiu Cheong Law
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Publication number: 20030184625Abstract: An ink cartridge includes an ink tank body, a cover body sealed on the ink tank body and a ventilated member. The cover body has an ink-charging inlet, a fastened recess, an air inlet port formed by an upper opening adjacent to the fastened recess and a lower opening, and a sealing member being disposed underneath the cover body. Further, the ventilated member has a fastened portion for correspondingly fastening into said fastened recess and a piercing portion connected to the fastened portion, and the piercing portion is formed therethrough with at least one air channel extending along an axial direction. Whereby the piercing portion is for piercing said sealing member to make said air inlet port be opened to an ambient atmosphere that enters to an interior of the ink tank body through the air channel of the piercing portion.Type: ApplicationFiled: April 2, 2002Publication date: October 2, 2003Inventors: Pui Kuong Lui, Yiu Cheong Law
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Patent number: 6619790Abstract: An ink-jet printer cartridge upper cover includes an inner tube, an outer tube, a non-rigid sealing ring defining a hole at the center portion thereof, and a vent-tip forming a cavity about the bottom surface thereof and having an air passageway extending from the bottom surface of said cavity through the hole, the upper cover inner tube, and said upper cover outer tube. Inner surface of the non-rigid sealing ring hole engages with outer surface of the upper cover inner tube, and outer surface of the hole engages with the inner surface of the cavity.Type: GrantFiled: March 11, 2002Date of Patent: September 16, 2003Assignee: Monitek Electronics LimitedInventors: Pui Kuong Lui, Yiu Cheong Law
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Publication number: 20030169317Abstract: An ink-jet printer cartridge upper cover includes an inner tube, an outer tube, a non-rigid sealing ring defining a hole at the center portion thereof, and a vent-tip forming a cavity about the bottom surface thereof and having an air passageway extending from the bottom surface of said cavity through the hole, the upper cover inner tube, and said upper cover outer tube. Inner surface of the non-rigid sealing ring hole engages with outer surface of the upper cover inner tube, and outer surface of the hole engages with the inner surface of the cavity.Type: ApplicationFiled: March 11, 2002Publication date: September 11, 2003Inventors: Pui Kuong Lui, Yiu Cheong Law
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Publication number: 20030112304Abstract: An ink cartridge includes an ink tank body for receiving an ink porous member which is a foam material for absorbing ink, a cover body for being covered with the ink tank body, an ink outlet port protruded outwardly from an outer surface of the ink tank body, and a stopping member arranged in the ink outlet port for receiving an ink delivery needle which the ink is flowed into; wherein the ink porous member has a substantially planar bottom surface relative to a substantially planar bottom surface of the tank body and is dimensioned to substantially fill the accommodating chamber in an uncompressed manner for efficiently supplying ink to the ink delivery needle.Type: ApplicationFiled: October 18, 2002Publication date: June 19, 2003Inventor: Pui Kuong Lui
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Patent number: 6567636Abstract: A toner cartridge with a toner stirring mechanism, which is well mixed with toner contained in a toner container, thereby blocking of the toner can be prevented and fluidity of the toner also can be improved by the movement of the toner stirring mechanism in the toner container, and stable toner flow to a developing device. Furthermore, the toner stirring mechanism further includes a stirring member having a grating shape and a pair of swing rods respectively connected to two sides through the connecting rods, wherein one of the swing rods can be driven via a camshaft of the transmission mechanism being driven through a force externally transmitted, by way of a motor disposed outside of the toner container.Type: GrantFiled: May 20, 2002Date of Patent: May 20, 2003Assignee: Monitek Electronics LimitedInventors: Pui Kuong Lui, Yiu Cheong Law
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Patent number: 6560425Abstract: A shutter device for protecting a photosensitive rotary drum includes a drum cover, at least one torsion spring, a press button, and a compression spring. The drum cover has a fixed end pivotally connected to a predetermined location of a process cartridge, a free end shielded on an exposed portion of said drum and an inside surface formed with a hook, and the torsion spring is arranged on said fixed end of the drum cover. The press button is received in a room of a side of the process cartridge, and the compression spring is positioned between a protruded rod formed inside said press button and a sleeve disposed on said room. Furthermore, the present invention has a better protection for the photosensitive rotary drum, and in the meanwhile, can be as a switch of an exposure window of the process cartridge.Type: GrantFiled: June 11, 2002Date of Patent: May 6, 2003Assignee: Monitek Electronics LimitedInventors: Pui Kuong Lui, Yiu Cheong Law
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Patent number: D517600Type: GrantFiled: March 23, 2005Date of Patent: March 21, 2006Assignee: Monitek Electronics LimitedInventor: Pui-Kuong Lui
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Patent number: D496685Type: GrantFiled: March 25, 2003Date of Patent: September 28, 2004Assignee: Monitek Electronics LimitedInventors: Pui Kuong Lui, Yiu Cheong Law
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Patent number: D496686Type: GrantFiled: March 25, 2003Date of Patent: September 28, 2004Assignee: Monitek Electronics LimitedInventors: Pui Kuong Lui, Yiu Cheong Law