Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in modular floating tile assemblies. The tray is made of plastic and has vertical tray edges recessed under the surface.

Abstract: This specification describes a tray substrate for tile flooring that can be used in narrow grout line modular floating tile assemblies. The tray is preferably made of plastic and has vertical tray edges around the top of the tray substrate with upward and downward tabs protruding from the sides of the tray substrate wherein some of the tabs are at least partially recessed under the surface of the tray.

Abstract: This specification describes a tray substrate for tile flooring that can be used in modular floating tile assemblies. The tray is made of plastic and has vertical tray edges recessed under the surface.

Abstract: A concentration detector is adapted to detect the concentration of a liquid fuel in a container. The concentration detector comprises a rotating mechanism positioned underneath the level of the liquid fuel and having a rotational center. A first float having a specific gravity less than the specific gravity of the liquid fuel, a volume equivalent to “V” and a mass equivalent to “M”. The distance between the mass center of the first float and the rotational center is “L”. A second float connected with the first float and having a specific gravity less than the specific gravity of the liquid fuel, a volume equivalent to “V” and a mass equivalent to “r*M”. The distance between the mass center of the second float and the rotational center is “L. The mass center of the second float, the rotational center and the mass center of the first float constitute an included angle of 120°.

Abstract: A concentration detector is disclosed, which is adapted to detect a concentration of a liquid fuel in a container. The concentration detector includes a rotating means positioned underneath a level of a liquid fuel and rotatable at an angle ? on a X-Y plane. The rotating means includes at least three floating objects connected with each other. Each floating object has a specific gravity less than a specific gravity of the liquid fuel ?. The floating objects are balanced according to a torque equation, F(?,?)=0, such that the rotating means is still under the level of the liquid fuel. While a concentration of the liquid fuel is changed and the angle ? of the rotating means is detected, the specific gravity of the liquid fuel ? is obtained from the torque equation, F(?,?)=0, and thereby computing the concentration of the liquid fuel.

Abstract: A fuel cartridge for a fuel cell comprises a fuel tank, an outlet and an electric unit. The fuel tank includes a sealed space constructed by a hollow case. The outlet is disposed on the case of the fuel tank, and fuel inside the fuel tank flows out from the outlet. The electric unit includes an electrical I/O interface and at least an electric component, and the electrical I/O interface is connected to the electric components.

Abstract: A distributed control method for a fuel cell system is disclosed. An auxiliary power source first provides power for a main control unit and a power management unit during the fuel cell system is turned on. The main control unit repeatedly receives status data of fuel cells from the power management unit or actively inquires of the power management unit to determine whether the fuel cell system is abnormal, and real-time regulates the system to maintain it in an optimal condition. The power management unit detects the status of the fuel cell using sensors, produces a corresponding status datum, and then feeds back the status datum to the main control unit. While the fuel cell system is turned off, fuels residual in flow channels of a fuel cell and un-drained products produced by the electrochemical reaction of a fuel cell are cleaned up, and the last status of the fuel cell before shut off is stored.

Abstract: The present invention is to provide a measurement apparatus of measuring fuel capacity used in fuel cell system; the measurement apparatus comprises a sensor device, a resistor, an A/D converter and a controller. The sensor device comprises a first electrode and a second electrode and accommodated in fuel storage and/or fuel flow layer to detect the fuel capacity of the anode, the second electrode connects to a low level voltage, one terminal of the resistor connects to the first electrode, the other terminal electrically connects to a high level voltage. The input terminal of the A/D converter connects to the first electrode and the first terminal of the resistor to input a measuring analog voltage, and also converts into a measuring digital voltage, the controller connects to the A/D converter to input measuring digital voltage and converts into the liquid level of the anode fuel in the fuel storage and/or fuel flow layer.

Abstract: The present invention provides a concentration detection device, which is used to detect the concentration of liquid fuel within a container.

Abstract: The present invention provides a fuel cell electric power sensing methodology and the applications thereof.

Abstract: This invention comprises a fuel cell power generation control methodology and the applications thereof, comprising the step of providing a DC converter and a fuel cell and then electrically connecting an input side of the DC converter to an output side of the fuel cell; converting output electricity of the fuel cell of the DC converter into a constant voltage output; the DC converter converts the output current of the fuel cell into a constant voltage (CV); and the DC converter keeps the DC converter input side within the planned limit of a constant current (CC). In other words, the output current of the fuel cell is kept within the planned limit of a constant current, wherein the planned limit of the constant current (CC) is the current limit determined by the quantity of MEAs in the fuel cell and the current limit below the optimum power interval generated by the MEA.