Patents by Inventor Kwei-Tang Chang

Kwei-Tang Chang 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).

  • Patent number: 6715406
    Abstract: A coffee maker comprises a base, a main body, a filter unit, a sprinkling unit, and an upper cover. Mortises, a positioning groove, and a lower socket are disposed at the top and two sides of the base, respectively. The mortises, the positioning groove, and the lower socket correspond to tenons, a positioning post, and an upper socket at the lower portion of the main body to facilitate connection, dismantlement, and cleaning of the base and the main body. A transparent window is disposed at the front side of the main body, and an inner glass container is disposed in the main body. The filter unit and the sprinkling unit are received in the inner glass container. Through the transparent window and the inner glass container, one can view the situation of brewing coffee in the inner glass container, hence enhancing the fun of brewing coffee.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: April 6, 2004
    Inventor: Kwei Tang Chang
  • Publication number: 20030205145
    Abstract: The present invention provides a separable coffee maker, which comprises a base, a filter unit, a guide pipe, and a container. The base has a receiving space therein. The filter unit is disposed in the receiving space of the base. Through holes are formed on the guide pipe, which is disposed above the filter unit. The container has an inner pipe body therein. The inner pipe body is extended upwards from the bottom portion of the container. The container is separately placed on the base. The inner pipe body of the container is slipped onto the guide pipe. A separable coffee maker whose container can be separately taken out is thus formed.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 6, 2003
    Inventor: Kwei Tang Chang
  • Publication number: 20030205569
    Abstract: The present invention provide a dual-purpose pot for roasting and frying, which comprises a main body, a pot body, an electric heat pipe, a fan, and a frying net. The top portion of the main body is open, and an upper cover capable of opening and closing is disposed at the top portion of the main body. The pot body is disposed in the main body. The electric heat pipe is disposed inside the pot body. The fan is disposed at the inside of the upper cover. The fan comprises a motor and a fan blade. The motor is fixed at the inside of the upper cover. The fan blade is fixed with a power output shaft of the motor.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 6, 2003
    Inventor: Kwei Tang Chang
  • Publication number: 20030205146
    Abstract: A coffee maker comprises a base, a main body, a filter unit, a sprinkling unit, and an upper cover. Mortises, a positioning groove, and a lower socket are disposed at the top and two sides of the base, respectively. The mortises, the positioning groove, and the lower socket correspond to tenons, a positioning post, and an upper socket at the lower portion of the main body to facilitate connection, dismantlement, and cleaning of the base and the main body. A transparent window is disposed at the front side of the main body, and an inner glass container is disposed in the main body. The filter unit and the sprinkling unit are received in the inner glass container. Through the transparent window and the inner glass container, one can view the situation of brewing coffee in the inner glass container, hence enhancing the fun of brewing coffee.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 6, 2003
    Inventor: Kwei Tang Chang
  • Publication number: 20030006176
    Abstract: An electric thermos bottle capable of filtering flowing water comprises a thermos bottle, an internal glass container, a heating pipe, a water pump, a filter, and a water supply pipe. The internal glass container is disposed in the thermos bottle and forms a water-storing space therein. The heating pipe and water pump are disposed at the bottom of the water-storing space, and the filter is disposed at the top thereof. One end of the water supply pipe is connected to the water pump, and the other end thereof forms a reflux mouth and a water outlet respectively disposed above the filter and outside the thermos bottle. The water outlet is connected with a water button. Water in the water-storing space can flow via the water supply pipe to the filter and back to the water-storing space by continual action of the water pump, preventing peculiar smell and filtering out impurities.
    Type: Application
    Filed: November 13, 2001
    Publication date: January 9, 2003
    Inventor: Kwei Tang Chang
  • Patent number: 6247393
    Abstract: The present invention proposes an apparatus for making soybean milk, wherein a cover body is connected to the opening of a container, and a fixing tank is extended form the cover body toward the inside of the container. A motor is installed in the fixing tank. A reaming blade is extended from the motor. A through passage is installed downwards from a position away from the center of the cover through the fixing tank to a cup-shaped component. A fixedly-joining device is installed at the inner edge of the opening of the cup-shaped component to be correspondingly joined with a fixedly-joined device installed at the bottom end of the peripheral surface of the fixing tank. The reaming blade is placed in the cup-shaped component. The periphery of the cup-shaped component is formed to be a filtering net. An electro-thermal tube is connected from the bottom edge of the cover into the container.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: June 19, 2001
    Inventor: Kwei Tang Chang
  • Patent number: 6183200
    Abstract: A fan device comprises a front fan cover, a blade device, a rear fan cover and a rotary front net. The front fan cover is installed with a first motor and a second motor therewithin. The blade means is installed behind the front fan cover and secured to the center of the shaft of the first motor for being driven to rotate by the first motor. The rear fan cover is installed behind the front fan cover and the blade device. The rear fan cover is combined with the front fan cover. The rotary front net has many lattices. The rotary front net is properly connected to the shaft center of the second motor and is driven to rotate by the second motor. The front fan cover is installed with a fragrant piece groove, a mosquito-repellent incense piece groove and an electric heat piece, and a fan leg frame is pivotally mounted to the rear fan cover. Thereby, the output wind can be diffuse uniformly and smoothly.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: February 6, 2001
    Inventor: Kwei-Tang Chang
  • Patent number: 6172340
    Abstract: A hot water bottle includes a bottle bottom, a bottle body, and a bottle cover. The bottle body is made of transparent glass which allows the level of water to be seen clearly from the outside of the bottle. A plurality of protective strips, with proper distribution, are formed on the outer surface of the bottle body to protect the user's hand by acting as a heat isolation barrier.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: January 9, 2001
    Inventor: Kwei-Tang Chang
  • Patent number: 6125737
    Abstract: A baking pot comprises a casing, an inner pot, an electric heating tube, a fan, a protecting disk and a web type pot body. The casing has an opening at top thereof and is installed with an upper cover. The inner pot is installed within the casing. The electric heating tube is fixed within the inner pot. The fan is installed within the inner pot; and is driven by a proper dynamic force. The protecting disk is fixed within the inner pot, and is positioned atop the electric heating tube and the fan The web type pot body installed on the protecting disk. By above structure, a baking pot is formed, which is suitable for baking potato strips, potato blocks, chicken blocks, or other freezing foods.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: October 3, 2000
    Inventor: Kwei Tang Chang
  • Patent number: 6007206
    Abstract: A comb mirror for improving health of a human body is disclosed. A plurality of far infrared ray lamps are installed in the inner space of the comb mirror body, By a first switch within the body, the first switch will control the on and off states of the far infrared ray lamps. A protecting web is installed in front of the inner space for isolating the far infrared ray lamps for providing the user to contact the far infrared rays lamps. Each of two sides of the body is installed with a respect mirror door which may rotate with the body. Each outer surface of the mirror door is installed with a plan mirror. The inner surface of the mirror seat is installed with concave mirror. By opening the mirror door, far infrared ray will be emitted. The concave mirror serves to focus the far infrared ray to the human body.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: December 28, 1999
    Inventor: Kwei-Tang Chang
  • Patent number: 5873298
    Abstract: The invention relates to a dual-function filter type pot cover, comprising an outside plate, an inside plate, a diverting cover, a filter element and a switching knob, wherein the outside plate, the inside plate and the diverting cover are combined as one, while the switching knob can rotate in relation to the diverting cover, on the inside plate are air vents, on the diverting cover is a separating plate that divide it into a first space with a filter element and a cover plate and a second space with steam holes and an arched guide groove, while on the inner rim of the switching knob is a protruded obstructing plate that is located in the guide groove, so that by rotating the switching knob, when the obstructing plate is away from the steam holes, the steam in the pot will escape without obstruction from the air vent on the inside cover to the first space and out of the steam holes, suitable for cooking food with water, or on the other hand, in case the cooking involves frying with oil, the obstructing plate
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: February 23, 1999
    Inventor: Kwei-Tang Chang
  • Patent number: 5782163
    Abstract: A coffee maker including a brewing and warming unit and a carafe, wherein the carafe has a hot plate at the bottom, and a downward annular flange raised from the bottom around the hot plate for supporting the carafe on a table top; the brewing and warming unit includes a base having a heat insulating rack and a concave heat insulating plate mounted within the heat insulating rack to hold a heating plate for heating the carafe, a lever controlled micro switch which is switched on when the carafe is placed on the heating plate or switched off when the carafe is removed from the heating plate, a first sensor which detects the temperature of the carafe, a second sensor which detects the temperature of the heating plate, and a control circuit driven by the micro switch to control the power of the heating plate subject to the detection result of the first sensor and the second sensor.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: July 21, 1998
    Inventor: Kwei-Tang Chang
  • Patent number: 5589092
    Abstract: A multipurpose electronic cooker control circuit including a rectifier filter circuit, an electronic switch for the ON/OFF control of an electric heater, a comparator circuit for temperature control, a single chip main control unit, a time and temperature display unit, a keyboard control circuit, and a buzzer, wherein the output terminal of the rectifier filter circuit is respectively connected to the input terminals of the electronic switch, the comparator circuit, the single chip main control unit, the time and temperature display unit, the keyboard control circuit and the buzzer; the output terminal of the single chip main control unit is respectively connected to the input terminals of the electronic switch, the comparator circuit, the time and temperature display unit and the buzzer; the output terminal of the comparator circuit is connected to the input terminal of the single chip main control unit; the output terminal of the keyboard control circuit is connected to the input terminal of the single chip
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: December 31, 1996
    Inventor: Kwei-Tang Chang
  • Patent number: 5570624
    Abstract: A percolator which includes a base, an electric heating circuit mounted in the base, a pot having a top opening, a spout extending from the top opening, and an upright guide tube, a filter mounted in the top opening of the pot and coupled to the upright guide tube, a handle fixedly secured to the pot, and a lid for covering on the the top opening of the pot over the filter, wherein the pot has a circular bottom hole, a heat-conductive cap fastened to the circular bottom hole to hold the guide tube in the pot, and an annular bottom flange around the circular bottom hole; the base comprises a circular hot plate disposed in contact with the heat-conductive cap, an annular groove disposed around the circular hot plate and forced into engagement with the annular bottom flange of the pot, a wire groove around the periphery, and a plug holder at the periphery; the handle has two pivot holes aligned at the top; the lid has a pivot pivotably and detachably connected to the pivot holes of the handle.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: November 5, 1996
    Inventor: Kwei-Tang Chang
  • Patent number: 5170695
    Abstract: For a kitchen utensil, a handle comprising a fastening ring fastened on the body of a kitchen utensil, a locating plate mounted on said fastening ring with two opposite pairs of lugs extended outwards, a handle body secured to said opposite pairs of lugs by screws and gaskets, and a guard plate secured between said handle body and the body of said kitchen utensil, said guard plate having projecting strips set in front notches and stopped against inner flanges on said handle body, wherein said two opposite pairs of lugs of said locating plates define a space therebetween for dissipating heat.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: December 15, 1992
    Inventor: Kwei-Tang Chang
  • Patent number: D444343
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: July 3, 2001
    Inventor: Kwei Tang Chang
  • Patent number: D339957
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: October 5, 1993
    Inventor: Kwei-Tang Chang
  • Patent number: D395191
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: June 16, 1998
    Inventor: Kwei-Tang Chang
  • Patent number: D428985
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: August 1, 2000
    Inventor: Kwei-Tang Chang