Patents by Inventor Kung Cheng Chen
Kung Cheng Chen 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: 20130068071Abstract: An adjustable wrench has a wrench body, a clamping element and a ratcheting jaw. The wrench body has a handle, a head and a thumbscrew. The head is formed on a front end of the handle and has a connecting block, a fixed jaw, a curved slot, a positioning pin, a mounting recess and a sliding slot. The clamping element is movably connected to the wrench body and has a rear end, a front end, a sliding bar and a movable jaw. The sliding bar is formed on the rear end of the clamping element, is mounted in the sliding slot and engages the thumbscrew and has multiple teeth. The ratcheting jaw is a curved block capable of sliding forward and retracting backward inside the curved slot and has a backward area, a forward area, a guide hole, an engaging surface, an abutting surface, an engaging protrusion and a spring.Type: ApplicationFiled: December 15, 2011Publication date: March 21, 2013Inventor: Kung-Cheng CHEN
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Patent number: 8381568Abstract: An electronic torque wrench calibration method includes providing test rod for simulating wrench body and support plate for simulating hand grip wherein on either side of the support plate there are provided at least two test points and an intermediate reference point; securing sensor to a stress gauge; placing two weights on the reference points and setting a count to one; recording torque as standard value; placing a weight on a respective one of the test points; recording torque as test value; comparing the test value with the standard value and obtaining an error; increasing bores of the adjustment holes if the error is greater than one prior to looping back to weight placing step; and ending the method by determining whether a predetermined count has been reached, and otherwise placing the weight on another respective one of the test points prior to looping back to test value recordation step.Type: GrantFiled: September 3, 2010Date of Patent: February 26, 2013Assignee: Xiamen United Trade Electronic Co., Ltd.Inventors: Kung-Cheng Chen, Hui-Bing Lin
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Publication number: 20120297936Abstract: An open end wrench includes a handle; and a spaced pair of jaws secured to and projecting from the handle, one of the jaws comprising a first engagement surface and a second engagement surface together arranged in an angled pair, and the other of the jaws comprising a third engagement surface, a fourth engagement surface spaced from the third engagement surface, and a concave surface between the third engagement surface and the fourth engagement surface, the third engagement surface being not parallel to the fourth engagement surface. The second engagement surface extends at an angle between 2-degree and 7-degree with respect to a virtual center line passing an opening between the pair of jaws. The fourth engagement surface extends at an angle between 2-degree and 5-degree with respect to the virtual center line. The second engagement surface is not parallel to the fourth engagement surface.Type: ApplicationFiled: May 25, 2011Publication date: November 29, 2012Applicant: E-MAKE Tools Co., LtdInventor: KUNG-CHENG CHEN
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Publication number: 20120167709Abstract: A crank system mounted to a drive sprocket of a bicycle includes a crank arm secured to the drive sprocket and disposed at both sides thereof, the crank arm having two bent ends; and two telescopic assemblies each comprising a bar having one end fixedly secured to either end of the crank arm, the bar having a cross section of polygon, the bar including a plurality of longitudinal notches, a sliding tube slidably put on the bar, the sliding tube including a surface opening communicating with the bar, and a pivotal lock member in the surface opening, the lock member being adapted to either dispose in one of the notches in a locked position of the telescopic assembly or clear the notch in a unlocked position of the telescopic assembly. This length adjustable bicycle crank system can save force when pedaling.Type: ApplicationFiled: January 3, 2011Publication date: July 5, 2012Inventors: Kung-Cheng Chen, Walter Luke
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Publication number: 20120055227Abstract: An electronic torque wrench calibration method includes providing test rod for simulating wrench body and support plate for simulating hand grip wherein on either side of the support plate there are provided at least two test points and an intermediate reference point; securing sensor to a stress gauge; placing two weights on the reference points and setting a count to one; recording torque as standard value; placing a weight on a respective one of the test points; recording torque as test value; comparing the test value with the standard value and obtaining an error; increasing bores of the adjustment holes if the error is greater than one prior to looping back to weight placing step; and ending the method by determining whether a predetermined count has been reached, and otherwise placing the weight on another respective one of the test points prior to looping back to test value recordation step.Type: ApplicationFiled: September 3, 2010Publication date: March 8, 2012Applicant: XIAMEN UNITED TRADE ELECTRONIC CO., LTD.Inventors: KUNG-CHENG CHEN, Hui-Bing Lin
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Patent number: 7722139Abstract: A slide assembly includes an outer slide member on either side of a cabinet; two inner slide members each adapted to move relative to the outer slide member and comprising front and rear tabs each having an adjacent opening; a front locking unit on either side of a drawer and comprising a first projection having a flat side surface, and a downward bent first snapping member disposed rearward of the first projection; and a rear locking unit formed on either side of the drawer and comprising a second projection having a flat side surface, and a downward bent first snapping member disposed forwardly of the second projection. The first snapping member can be locked between the front opening and the front tab and the second snapping member can be locked between the rear opening and the rear tab without using tools.Type: GrantFiled: April 16, 2009Date of Patent: May 25, 2010Assignee: E-Make Co., Ltd.Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20100019636Abstract: A latch mechanism for a sliding drawer supported by telescopic slides and mounted in a cabinet with two strikes on side walls, the drawer including two holes proximate both sides of a front side wall, and two lateral side walls, the latch mechanism comprising in combination a handle mounted on the front side wall of the drawer; two lever catches including a bottom recess pivotably seated upon the bottom of the hole, a top shoulder adjacent the top of the hole for retaining the lever catch, and a top rear tang stopped by the strike in a drawer retention position; and a transverse member secured to the front ends of the lever catches. Clockwise pivoting the transverse member will unlock the tangs. Pulling the handle will open the drawer by passing the tangs under the strikes. Pushing the handle will pass the tangs under the strikes to close the drawer.Type: ApplicationFiled: July 23, 2008Publication date: January 28, 2010Applicant: E-MAKE CO., LTD.Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20090211933Abstract: A movable toolbox includes a padding assembly comprising four units including a hollow first padding and a complementary hollow second padding, each padding including first, second and curved outer surfaces, and a wall for forming first and second shock absorbing spaces wherein the first surface of the first padding is adhered to one surface on the corner, the first surface of the second padding is adhered to the other surface on the corner, and the second surface of the first padding is adhered to that of the second padding; and a cap shaped as three-quarters of a dome comprising two abutting surfaces and two hollow legs in the first shock absorbing space of the first padding distal the corner and the first shock absorbing space of the second padding distal the corner respectively. Additionally, a pad is provided on the top surface having four corners urged against the abutting surfaces.Type: ApplicationFiled: February 27, 2008Publication date: August 27, 2009Inventors: KUNG-CHENG CHEN, Lung-Chuan Huang
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Patent number: 7516864Abstract: A built-up container includes a base, a front and rear side plates, a right and left side plates and a lifted upper cover. The base provides threaded holes and the side plates provide through holes and threaded holes so that the container can be built up with bolts engaging with the threaded holes. It is characterized in that no holes and no bolts expose outside the container with reinforced strength such that integrity and smoothness of the container can be obtained and the fasteners inside the container are free from water and unable to hurt foreign objects. In addition, the container is capable of being set up fast easily to enhance facility of assembling job.Type: GrantFiled: June 30, 2005Date of Patent: April 14, 2009Assignee: E-MAKE Co., Ltd.Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20080129165Abstract: A quickly detachable cabinet provides several elongated holes and projection elements at two joining plates thereof for the elongated holes being matched with the projection elements and a latch element being inserted into an inserted space between the respective projection element and the elongated hole. Hence, the cabinet can be assembled and disassembled easily with hands without hand tools.Type: ApplicationFiled: November 30, 2006Publication date: June 5, 2008Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20070257588Abstract: A drawer latch includes a controller mounted on an outer side of the drawer. A lever is pivotally mounted on an inner side of a cabinet, which contains the drawer, for selectively engaged to the controller. The lever automatically engaged to the controller to prevent the drawer from an accidentally operated when the drawer is closed.Type: ApplicationFiled: May 8, 2006Publication date: November 8, 2007Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20070035218Abstract: An anti-slant device for a cabinet with multiple drawers includes an actuator extending from a back of each of the multiple drawers. A base is secured on a back of the cabinet and corresponding to the actuators extending from each of the multiple drawers. The base has a holder mounted on a top thereof. A slider is slidably mounted on the base and longitudinally moved relative to the base. Each actuator extends through the slider for upwardly/downward drive the slider. A buckle is disposed on a top of the slider and linearly corresponds to the holder. The buckle is received in the holder to hold the slider in place when one of the drawers is pull out of the cabinet.Type: ApplicationFiled: August 12, 2005Publication date: February 15, 2007Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20070000923Abstract: A built-up container includes a base, a front and rear side plates, a right and left side plates and a lifted upper cover. The base provides threaded holes and the side plates provide through holes and threaded holes so that the container can be built up with bolts engaging with the threaded holes. It is characterized in that no holes and no bolts expose outside the container with reinforced strength such that integrity and smoothness of the container can be obtained and the fasteners inside the container are free from water and unable to hurt foreign objects. In addition, the container is capable of being set up fast easily to enhance facility of assembling job.Type: ApplicationFiled: June 30, 2005Publication date: January 4, 2007Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20060261716Abstract: An automatic locking device for a drawer includes a hinge secured on one side of the drawer, a lever laterally attached to the hinge, a restoring element mounted on the hinge and a latch mounted on a frame. The latch corresponds to the lever. The lever is automatically engaged to the latch due to a restitution force of the restoring element when the drawer is closed.Type: ApplicationFiled: May 18, 2005Publication date: November 23, 2006Inventors: Kung-Cheng Chen, Lung-Chuan Huang
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Publication number: 20040232660Abstract: A pushcart with telescopic handle, including a base seat and a dragging apparatus. Several wheels and the dragging apparatus are mounted on one face of the base seat. The dragging apparatus includes a first slide rail and a second slide rail. A first stopper section is disposed at one end of the first slide rail. The second slide rail is fitted in the first slide rail and reciprocally slidable out of or into the first slide rail. A second stopper section is disposed at one end of the second slide rail. The first stopper section serves to stop the second stopper section, whereby when extending, the second slide rail will not detach from the first slide rail. A handle section is disposed at the other end of the second slide rail for pushing/dragging the first slide rail to drive the base seat. The second slide rail further has a pivot section.Type: ApplicationFiled: November 28, 2003Publication date: November 25, 2004Applicant: E-MAKE CO., LTD.Inventor: Kung Cheng Chen
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Patent number: 6742854Abstract: Anti-inclination and internal locking device for a cabinet, including a cabinet body, at least two drawers disposed in the cabinet body, a projecting body disposed on rear side of each drawer, a base seat fixedly disposed on inner side of a rear wall board of the cabinet body corresponding to each drawer, a slide seat slidably fitted in the base seat and movable between a first position and a second position and a first and a second connecting sections respectively disposed at one end of the base seat and one end of the slide seat. The projecting body has an activating section and a stop section. The slide seat is formed with an opening corresponding to the projecting body.Type: GrantFiled: September 16, 2002Date of Patent: June 1, 2004Assignee: E-Make Co., Ltd.Inventor: Kung Cheng Chen
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Publication number: 20030106475Abstract: A receiving plate supporting device includes a base, a supporting portion, a plate and a pair of rods. The base has a pair of piece-like bodies which are spaced with a predetermined distance and are installed at a wall. A supporting portion is installed at the two piece-like bodies having an upper slide path and a lower slide path. The plate is a rectangular plate with a width corresponding to a distance between two piece-like bodies. The pair of rods is corresponding to the supporting portion and is installed at lateral sides of the plate. The plate can be placed horizontally or vertically as desired. Therefore, it is space-efficient and convenient. Furthermore, the receiving plate supporting device can be assembled easily, and structure of each component is easy and is cost-effective.Type: ApplicationFiled: December 10, 2001Publication date: June 12, 2003Applicant: E-MAKE CO., LTD.Inventor: Kung Cheng Chen
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Publication number: 20030107307Abstract: Hanging board structure for collectively storing tools, including at least one tool hanging board, at least one hanging hook and a cabinet body. The tool hanging board is a board body having predetermined length and width and formed with several perforations at intervals. One end of the hanging hook is inserted in the perforation of the tool hanging board. A tool can be hung on the other end of the hanging hook. The cabinet body is a rectangular body composed of an upper, a lower, a front and a rear panels which define an interior space. The left and right sides of the cabinet body are formed with openings. The inner faces of the upper and lower panels are respectively formed with corresponding slide sections. Two edges of the tool hanging board are respectively inlaid in the slide sections, whereby the tool hanging board can be reciprocally moved out of or into the cabinet body from left and right sides thereof.Type: ApplicationFiled: December 10, 2001Publication date: June 12, 2003Applicant: E-MAKE CO., LTD.Inventor: Kung Cheng Chen
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Patent number: 6575313Abstract: Structure for firmly resting tools thereon, including a base board, a magnetic section and at least one insertion key. The base board is formed with multiple insertion holes arranged at predetermined intervals. The magnetic section is laid on the base board. The insertion key can be inserted into the insertion hole. Various tools with different configurations can be rested on the base board and the insertion keys can be inserted into the insertion holes around the tools to elastically locate the tools. In addition, the magnetic section is able to attract iron-made tools to more firmly rest the tools on the base board.Type: GrantFiled: February 27, 2002Date of Patent: June 10, 2003Assignee: E-Make Co., Ltd.Inventor: Kung Cheng Chen