Patents by Inventor Qingyuan Chen
Qingyuan 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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Patent number: 9853258Abstract: A general-purpose battery compartment, comprising a compartment body that can receive either lithium batteries or AA batteries therein and separate the AA batteries received therein to prevent contact therebetween; wherein spring leafs used to connect with the lithium batteries or the AA batteries are provided within the compartment body, and contact points of anode and cathode of the lithium batteries are respectively connected to the two spring leafs that are connected to output terminals of anode and cathode of the battery compartment.Type: GrantFiled: May 6, 2016Date of Patent: December 26, 2017Assignee: Yueqing Chuangyi Photography Equipment Co., Ltd.Inventor: Qingyuan Chen
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Publication number: 20170146891Abstract: The present utility model relates to a transverse tube and a photographic equipment support. The purpose of the utility model is to provide a transverse tube that can be used with a common photographic equipment to allow a centre shaft transverse, and provide a photographic equipment containing the transverse tube.Type: ApplicationFiled: May 10, 2016Publication date: May 25, 2017Inventor: Qingyuan CHEN
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Publication number: 20170033334Abstract: A general-purpose battery compartment, comprising a compartment body that can receive either lithium batteries or AA batteries therein and separate the AA batteries received therein to prevent contact therebetween; wherein spring leafs used to connect with the lithium batteries or the AA batteries are provided within the compartment body, and contact points of anode and cathode of the lithium batteries are respectively connected to the two spring leafs that are connected to output terminals of anode and cathode of the battery compartment.Type: ApplicationFiled: May 6, 2016Publication date: February 2, 2017Inventor: Qingyuan CHEN
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Publication number: 20160202597Abstract: The present invention is an on-camera flashlight, comprising a lower light holder and a top light holder freely rotatably connected to the lower light holder. A flashlight light source is mounted on the top of the top light holder. The light emitting diode and the flashlight light source are mounted on the on-camera flashlight, combined for ease of use. Two functions-in-one lighting device saves space, avoids overloading the camera, and makes it portable. Because the two light sources are set in combination, the cooperation and sequence of the two light sources are easier to control. As the light emitting diode is mounted on the top light holder which may freely rotate with respect to the lower light holder, the light emitting diode may also freely rotate. It is also convenient to adjust the light direction. Above features all remarkably facilitate operation and versatility of the on-camera flashlight.Type: ApplicationFiled: July 9, 2015Publication date: July 14, 2016Inventor: Qingyuan CHEN
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Publication number: 20160116826Abstract: This specification discloses an on-camera flashlight, comprising a flashlight body, wherein the flashlight body is provided with a flashlight battery cabin, characterized that the flashlight battery cabin is provided with multiple (e.g. six) electric contactors electrically connected to output metal plate of a battery. The flashlight battery cabin in the present invention is used for holding batteries. The flashlight battery cabin has at least six electric contactors and the six electric contact shrapnel are located at the center of the base portion of the flashlight battery cabin. Therefore, it can ensure that the batteries and the flashlight battery cabin are pressed uniformly, and the batteries do not easily swell up and thus safety is improved. Moreover, because the flashlight battery cabin is pressed uniformly, the shell does not easily damage and the service life of the camera is thus extended.Type: ApplicationFiled: February 6, 2015Publication date: April 28, 2016Inventor: Qingyuan Chen
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Publication number: 20150370147Abstract: The present invention provides a flashlight, comprising: an input module, configured to input a first input information, the first input information is used to trigger the first main control module to adjust the output mode of the flashlight and the output mode is an output mode comprising flashlight parameters and parameter names; a first main control module connected to the input module, configured to receive the first input information, determine the output mode of the flashlight corresponding to the first input information, and generate a first control instruction corresponding to the output mode; a display connected to the first main control module, configured to receive the first control instruction, and output the flashlight parameters and parameter names according to the first control instruction.Type: ApplicationFiled: February 6, 2015Publication date: December 24, 2015Inventor: Qingyuan Chen
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Publication number: 20150153631Abstract: The present invention relates to a mechanism and system for attaching an external flash to a camera, and a flash. The connection mechanism comprises: a body, a connecting foot and at least two groups of electrical contacts for touching contacts of hot shoes of at least two differing types of cameras for connecting an external flash control unit; when a flash provided with the mechanism for attaching an external flash to a camera as disclosed in the present invention is mounted on a camera, the corresponding group of electrical contacts touch each other to transmit signals. Since at least two groups of electrical contacts are provided, the flash is capable of being applied to cameras of two differing types, and further facilitating users and saving costs.Type: ApplicationFiled: July 30, 2014Publication date: June 4, 2015Inventor: Qingyuan Chen
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Patent number: 8636429Abstract: An easily adjustable tripod includes a main body, legs, a positioning piece, and a spring. The main body includes an adjustable connection part having protruding parts that function as gear teeth. Each leg includes a connector having two protruding side walls. The connector and the adjustable connection part are coupled with mounting screws. The positioning piece is coupled to the connector between the two protruding walls and meshes with the protruding parts on the adjustable connection part. The opening angle of the legs can be easily adjusted and fixed using the positioning piece and the adjustable connection part. The spring and the positioning piece are installed to form an organic whole, so the positioning piece can be conveniently adjusted without changing the opening angle after fixation. It is easy to close and fold the tripod because of the applied force of the spring.Type: GrantFiled: April 12, 2012Date of Patent: January 28, 2014Inventor: Qingyuan Chen
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Publication number: 20130121680Abstract: An easily adjustable tripod includes a main body, legs, a positioning piece, and a spring. The main body includes an adjustable connection part having protruding parts that function as gear teeth. Each leg includes a connector having two protruding side walls. The connector and the adjustable connection part are coupled with mounting screws. The positioning piece is coupled to the connector between the two protruding walls and meshes with the protruding parts on the adjustable connection part. The opening angle of the legs can be easily adjusted and fixed using the positioning piece and the adjustable connection part. The spring and the positioning piece are installed to form an organic whole, so the positioning piece can be conveniently adjusted without changing the opening angle after fixation. It is easy to close and fold the tripod because of the applied force of the spring.Type: ApplicationFiled: April 12, 2012Publication date: May 16, 2013Inventor: Qingyuan Chen
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Patent number: 7559223Abstract: Methods and apparatuses for determining entrained and/or dissolved gas content of gas-liquid mixtures. Data generated is used to control the True (air-free) or Apparent (air-containing) Density or Entrained Air content of liquids within optimum ranges, e.g. in paper coating processes and in the manufacture of food products, personal care products, pharmaceutical products, paints, petroleum blends, etc.Type: GrantFiled: December 13, 2004Date of Patent: July 14, 2009Assignee: Appleton Papers Inc.Inventors: Qingyuan Chen, Robert Josef Franda
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Patent number: 7257985Abstract: Methods and apparati for measuring entrained gas content. One of the disclosed apparatus embodiments includes a chamber and piping for process fluid, the piping including two different sectors each comprising a density and temperature gauge having a pressure gauge located upstream and a second pressure gauge located downstream, the two sectors being operatively joined together by a pressure-changing device. The pressure measurement feature may be incorporated into the combination density and temperature gauge, eliminating the need for separate pressure gauges. Data generated by this invention reduces measurement error caused by the dissolving or exsolving of gases with changes in pressure of a fluid, while providing instantaneous measurement, through apparatuses that measure system conditions at each of two pressure states within a very short period of time. For instance, in the context of continuously coating a substrate, the method of this invention comprises: a.Type: GrantFiled: August 21, 2003Date of Patent: August 21, 2007Assignee: Appleton Papers Inc.Inventors: Robert Josef Franda, Qingyuan Chen
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Patent number: 7017388Abstract: Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care products (shampoo), paints, and in any industry where information on entrained and/or dissolved gases, and related parameters such as true density of and gas solubility in process liquids, is employed to optimize processing. The amount of gas in a liquid is determined by subjecting a mixture of an incompressible liquid sample and a compressible gas to three or more different equilibrium pressure states, measuring the temperature and volume of the mixture at each of the pressure states, determining the changes in volume of the mixture between at least two different pairs of pressure states, and calculating the amount of gas in the liquid sample.Type: GrantFiled: May 10, 2004Date of Patent: March 28, 2006Assignee: Appleton Papers, Inc.Inventors: Qingyuan Chen, Robert Josef Franda
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Publication number: 20050109078Abstract: Methods and apparatuses for determining entrained and/or dissolved gas content of gas-liquid mixtures. Data generated is used to control the True (air-free) or Apparent (air-containing) Density or Entrained Air content of liquids within optimum ranges, e.g. in paper coating processes and in the manufacture of food products, personal care products, pharmaceutical products, paints, petroleum blends, etc.Type: ApplicationFiled: December 13, 2004Publication date: May 26, 2005Inventors: Qingyuan Chen, Robert Franda
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Publication number: 20050043900Abstract: Methods and apparati for measuring entrained gas content. One of the disclosed apparatus embodiments includes a chamber and piping for process fluid, the piping including two different sectors each comprising a density and temperature gauge having a pressure gauge located upstream and a second pressure gauge located downstream, the two sectors being operatively joined together by a pressure-changing device. The pressure measurement feature may be incorporated into the combination density and temperature gauge, eliminating the need for separate pressure gauges. Data generated by this invention reduces measurement error caused by the dissolving or exsolving of gases with changes in pressure of a fluid, while providing instantaneous measurement, through apparatuses that measure system conditions at each of two pressure states within a very short period of time. For instance, in the context of continuously coating a substrate, the method of this invention comprises: a.Type: ApplicationFiled: August 21, 2003Publication date: February 24, 2005Inventors: Robert Franda, Qingyuan Chen
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Patent number: 6847898Abstract: Methods and apparatuses for determining entrained and/or dissolved gas content of gas-liquid mixtures. Data generated is used to control the True (air-free) or Apparent (air-containing) Density or Entrained Air content of liquids within optimum ranges, e.g. in paper coating processes and in the manufacture of food products, personal care products, pharmaceutical products, paints, petroleum blends, etc.Type: GrantFiled: August 21, 2003Date of Patent: January 25, 2005Assignee: Appleton Papers Inc.Inventors: Qingyuan Chen, Robert Josef Franda
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Publication number: 20040206157Abstract: Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care products (shampoo), paints, and in any industry where information on entrained and/or dissolved gases, and related parameters such as true density of and gas solubility in process liquids, is employed to optimize processing. The amount of gas in a liquid is determined by subjecting a mixture of an incompressible liquid sample and a compressible gas to three or more different equilibrium pressure states, measuring the temperature and volume of the mixture at each of the pressure states, determining the changes in volume of the mixture between at least two different pairs of pressure states, and calculating the amount of gas in the liquid sample.Type: ApplicationFiled: May 10, 2004Publication date: October 21, 2004Applicant: Appleton Papers, Inc.Inventors: Qingyuan Chen, Robert Josef Franda
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Patent number: 6766680Abstract: Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care products (shampoo), paints, and in any industry where information on entrained and/or dissolved gases, and related parameters such as true density of and gas solubility in process liquids, is employed to optimize processing. The amount of gas in a liquid is determined by subjecting a mixture of an incompressible liquid sample and a compressible gas to three or more different equilibrium pressure states, measuring the temperature and volume of the mixture at each of the pressure states, determining the changes in volume of the mixture between at least two different pairs of pressure states, and calculating the amount of gas in the liquid sample.Type: GrantFiled: January 16, 2002Date of Patent: July 27, 2004Assignee: Appleton Papers, Inc.Inventors: Qingyuan Chen, Robert Josef Franda
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Publication number: 20030131652Abstract: Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care products (shampoo), paints, and in any industry where information on entrained and/or dissolved gases, and related parameters such as true density of and gas solubility in process liquids, is employed to optimize processing. The amount of gas in a liquid is determined by subjecting a mixture of an incompressible liquid sample and a compressible gas to three or more different equilibrium pressure states, measuring the temperature and volume of the mixture at each of the pressure states, determining the changes in volume of the mixture between at least two different pairs of pressure states, and calculating the amount of gas in the liquid sample.Type: ApplicationFiled: January 16, 2002Publication date: July 17, 2003Inventors: Qingyuan Chen, Robert Josef Franda
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Patent number: 6496781Abstract: The present invention provides an improvement to the two, inaccurate, traditional approaches relating concentration to density. The first of these assumes that the solute is completely insoluble in the solvent; the second is based on a soluble solute. The present improved relationship is referred to as the CONCENTRATION-DENSITY MODEL. This model allows for a theoretical determination of the concentration-density relationship for a multi-component solid/liquid or liquid/liquid mixture. Included in the Concentration-Density Model is a new concept referred to as ADDITIVE VOLUME COEFFICIENT (AVC). This concept compensates for the fact that the net volume of a mixture does not always equal the sum of the volumes of each component. This improved Concentration-Density Model provides fluid-handling manufacturers with a method for accurately determining a mixture's concentration on-line with the aid of current density measurement instrumentation.Type: GrantFiled: June 29, 2001Date of Patent: December 17, 2002Assignee: Appleton Papers Inc.Inventors: Qingyuan Chen, Robert J. Franda
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Patent number: 6196058Abstract: An improved method and apparatus for determining fluid viscosity comprises conveying substantially fully developed, uni-directional, and undisturbed fluid flow through a differential pressure measurement section and flow rate measuring means connected in line with, but separated from, the differential pressure measurement section. A preceding flow tube section is connected to the inlet of the differential pressure measurement section, and a succeeding flow tube section is connected to the outlet of the differential pressure measurement section so that entrance and exit flow effects are avoided in the measurement section. Differential pressure measured in substantially undisturbed, uni-directional, and fully developed fluid flow results in improved accuracy of viscosity calculation using the Hagen-Poiseuille equation.Type: GrantFiled: March 12, 1998Date of Patent: March 6, 2001Assignee: Consolidated Papers, Inc.Inventor: Qingyuan Chen