Patents Represented by Attorney, Agent or Law Firm Pro-Techtor International
  • Patent number: 6561026
    Abstract: A hydrometer comprises a transparent container including a top opening, two arcuate dividers extended from both sides of top opening for dividing the interior of container into a measuring chamber and two opposite side channels each having a bottom open end in communication with measuring chamber and a top inlet open to outside, and a pointer pivotably mounted inside measuring chamber and adapted for indicating a specific gravity of liquid (e.g., sea water) contained in measuring chamber A fluid path is formed from top inlet through channel and bottom open end into measuring chamber as container immersed in the liquid to be measured. This can avoid the generation of bubbles. Further, the time(s) of adjustment of the specific gravity of liquid can be precisely determined.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: May 13, 2003
    Inventor: Chih Yao Tu
  • Patent number: 6563090
    Abstract: An electric heating blanket control circuit assembly is constructed to include an electric heater, a sensor adapted for detecting the temperature level of the electric heater, a controller, the controller having a monitoring circuit adapted for monitoring normal functioning of the sensor and the electric heater and a main control circuit adapted controlling the operation of the electric heater subject to the detection result of the sensor to keep the temperature of the electric heater to be maintained within a limited range, and a power adapter adapted for providing low voltage DC to the electric heater, the sensor, and the controller for working.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: May 13, 2003
    Inventor: Shu Chih Wu
  • Patent number: 6557670
    Abstract: A double brake protection device for elevator is provided. The device comprises at least one of emergency means and electromagnetic means coupled to brake in order to effect a stepwise stopping procedure for preventing elevator from free falling after brake is released.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: May 6, 2003
    Inventor: Jiun Jyh Wang
  • Patent number: 6559539
    Abstract: A stacked package structure of an image sensor used for electrically connecting to a printed circuit board includes a substrate, an image sensing chip, an integrated circuit, and a transparent layer. The substrate has a first surface and a second surface. The first surface is formed with signal input terminals. The second surface is formed with signal input terminals and signal output terminals for electrically connecting to the printed circuit board. The image sensing chip is mounted on the first surface of the substrate and is electrically to the signal input terminals of the substrate. The integrated circuit is arranged on the second surface of the substrate and is electrically connected to the signal input terminals of the substrate. The transparent layer covers over the image sensing chip, which can receive the image signals via the transparent layer and convert the image signals into electrical signals that are to be transmitted to the substrate.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: May 6, 2003
    Inventors: Hsiu Wen Tu, Wen Chuan Chen, Mon Nan Ho, Li Huan Chen, Nai Hua Yeh, Yen Cheng Huang, Yung Sheng Chiu, Jichen Wu
  • Patent number: 6557185
    Abstract: The invention provides device for affixing a lens of a safety helmet. A helmet housing has a base located on each of both sides. The base has a C-like protruding ring. The protruding ring has an upward opening gap, wherein an inner side surface has a C-like groove. A protruding body is located under the protruding ring, wherein a bottom of the protruding body has a concave clicking opening. A side front portion of the protruding ring has clicking protruding body having a top with a slant surface. A windshield lens of safety helmet has a base plate at each of both sides, which base plate can be affixed onto the base of the helmet housing. An inner side of the base has two L-like clicking protruding bodies, which can be inserted to the C-like groove. A clicking gear is formed on the base plate at a bottom rim corresponding to the protruding body of the base.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: May 6, 2003
    Assignee: Long Huei Helmet Co.
    Inventor: Te Lung Lee
  • Patent number: 6558136
    Abstract: A micropump underpressure control device, working in conjunction with a micropump having an inlet and an outlet. The micropump underpressure control device comprises a control valve and a transmission tube. The control valve is installed at a supply pipe leading to the micropump and further comprises a case with a membrane, a valve assembly, a connecting rod and a spring. The membrane is exposed to pressure from the outlet of the micropump and accordingly deformed, via the connecting rod controlling opening and closing of the valve assembly, so that working liquid is allowed to proceed to the inlet of the micropump or blocked. The transmission tube transmits pressure at the outlet of the micropump to the membrane. On an opposite side, the membrane is pressed on by working liquid and by the spring. Thus pressure at the inlet of the micropump is controlled, being kept smaller than or equal to pressure at the outlet of the micropump by a fixed difference.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: May 6, 2003
    Assignee: Industrial Technology Research Institute
    Inventor: Yu-Yin Peng
  • Patent number: 6558076
    Abstract: The present invention relates to a flow permeable port embankment, mainly constructed by multiple waste tires which are arranged in a longitudinal direction and a transverse direction. The port embankment includes multiple vertically arranged tires and multiple horizontally arranged tires that are combined with each other by fastening of cables. The horizontally arranged tires are poured with concrete. The port embankment can use a wave energy reduction device of central holes of the multiple vertically arranged tires, so that when a big wave or surge rushes into the port embankment through the central holes of the vertically arranged tires, the energy thereof is counteracted naturally and completely, so that the region in the port embankment is calm, thereby preventing ships in the port embankment from hitting each other.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 6, 2003
    Inventor: Chung-Yi Liaw
  • Patent number: 6552382
    Abstract: A scalable vertical DRAM cell structure comprising a scalable trench region and a self-aligned common-drain diffusion region are disclosed by the present invention, in which the scalable trench region comprises a deep-trench region having a vertical transistor and a second-type STI region being defined by a spacer technique. The scalable vertical DRAM cell structure can offer a DARM cell size equal to or smaller than 4F2 and is used to implement two contactless DRAM arrays. A first-type contactless DRAM array comprises a plurality of metal bit-lines integrated with planarized common-drain conductive islands and a plurality of highly conductive word-lines. A second-type contactless DRAM array comprises a plurality of metal word-lines integrated with planarized common-gate conductive islands over common-gate conductive connector islands and a plurality of common-drain conductive bit-lines.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 22, 2003
    Assignee: Intelligent Sources Development Corp.
    Inventor: Ching-Yuan Wu
  • Patent number: 6552386
    Abstract: A scalable split-gate flash memory cell structure of the present invention comprises a common-source region, a scalable split-gate region being formed by a sidewall dielectric spacer, and a scalable common-drain region, wherein the scalable split-gate region comprising a floating-gate region being defined by another sidewall dielectric spacer has a tip-cathode line for erasing. The cell size of the present invention is scalable and can be made to be equal to 4F2 or smaller. The scalable split-gate flash memory cell structure is used to implement two contactless flash memory arrays: a contactless NOR-type flash memory array and a contactless parallel common-source/drain conductive bit-lines flash memory array for high speed read/write/erase operations. Moreover, the contactless flash memory arrays can be fabricated with less critical masking steps as compared to the prior art.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 22, 2003
    Assignee: Silicon-Based Technology Corp.
    Inventor: Ching-Yuan Wu
  • Patent number: 6546950
    Abstract: A lacquer bullet gun gas entry valve, placed inside the lacquer bullet gun at an entrance of a conduit between an expansion chamber and a bullet chamber. The lacquer bullet gun gas entry valve comprises a valve body and a shutter. The valve body has a passageway, allowing compressed gas to pass to the bullet-chamber. The shutter tightly closes a front end of the valve body. The shutter has a first surface to which a first rod is attached and a second surface opposite to the first surface to which a second rod is attached, which is aligned with the first rod on a common axis. Depending on how the shutter is oriented, the first or second rod pass through the passageway, having a far end which extends beyond a rear end of the valve body, so that pushing of the far end by the firing device causes the shutter to be opened. Several longitudinal grooves are cut into the far end both of the first and the second rod, providing a path for compressed gas to push back the firing device.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: April 15, 2003
    Inventor: Chih-Chen Juan
  • Patent number: 6542709
    Abstract: A developer container having a gear transmission mechanism coupled between a mixer, which is mounted inside the container body of the developer container to mix developer, and a propelling screw, which is mounted in a developer supply trough at a bottom side of the developer container and adapted to propel developer out of the developer container and the developer supply trough, for enabling the mixer to be rotated to mix developer upon rotary motion of the propelling screw to propel developer out of the developer supply trough.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: April 1, 2003
    Assignee: General Plastic Industrial Co., Ltd.
    Inventors: Jui-Chi Wang, Robin Hsu, Ching Yu Huang, Li Kuan Tung
  • Patent number: 6533813
    Abstract: The present invention is to provide an intraocular lens that may accommodate automatically, including a central optic having an anterior optic connected with the stroke cylinder, a posterior optic connected with the outer core which is connected with the stroke cylinder, thereby enclosing the central optic in an inner periphery. Thus, by change of the inclined angle of the user, or by variation of the external magnetic field, the push force that is exerted on the central optic of the intraocular lens may be regulated, so as to actively control the position of the central optic of the intraocular lens, so that the user may actively control and regulate the refractive power of the eyeball that is implanted with the intraocular lens.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: March 18, 2003
    Inventors: Chwen Yih Lin, Ray Jui-Fang Tsai
  • Patent number: 6530591
    Abstract: A frame structure for baby stroller is constructed to include a rear seat frame bar adapted to support a rear seat, a front seat frame adapted to support a front seat, the front seat frame having a curved middle section extended downwards and then backwards below the elevation of the rear seat frame bar and supporting a footplate for the standing of a child behind the rear seat frame bar, and a backrest frame bar pivoted to the front seat frame bar and locked in one of a series of tilted positions.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: March 11, 2003
    Inventor: Mien Chen Huang
  • Patent number: D471913
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: March 18, 2003
    Inventor: Vincent Lai
  • Patent number: D472217
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: March 25, 2003
    Inventor: Tien Jong Hsiao
  • Patent number: D472701
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: April 8, 2003
    Inventor: Prost Christophe
  • Patent number: D473091
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: April 15, 2003
    Inventor: Chiu-Yuan Chen
  • Patent number: D473256
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: April 15, 2003
    Inventor: Le - Jang Feng
  • Patent number: D473588
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: April 22, 2003
    Assignee: General Plastic Industrial Co., Ltd.
    Inventors: Jui-Chi Wang, Robin Hsu, Mei Hsia Chang
  • Patent number: D474427
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: May 13, 2003
    Inventor: Mien Chen Huang