Patents Represented by Attorney, Agent or Law Firm Donald C. Casey
  • Patent number: 5742697
    Abstract: A microphone having a telescopic sound pickup means includes a handle fitted with an adjusting knob provided with an internal spiral slide groove. By turning the adjusting knob, a pin may be brought by the spiral slide groove to slide upwardly and downwardly along a vertical slot formed in one side of the handle. The pickup head is therefore brought to perform telescopic actions by the displacement of the pin.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: April 21, 1998
    Assignee: PAO Sung Industrial Co., Ltd.
    Inventor: Chiang Ching-Chung
  • Patent number: 5724963
    Abstract: A portable filter for a compressed air system is described. The filter is intended to be worn by an operator, and contains a diverter valve whereby air from a remote air compressor enters the filter, and is divided into a flow to a work line, and a regulated flow to a conventional respirator mask to provide breathing air to the operator. The air diverted to the operator passes through a three-stage filter consisting of elements in series which are designed to both remove impurities from the air, and register excessive moisture content therein as a warning to the operator. The flow to the work line is typically a five foot line to an air-driven implement such as a paint sprayer or the like.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: March 10, 1998
    Inventor: Larry E. Seeley
  • Patent number: 5722050
    Abstract: A transmitter-receiver system including a transmitter unit installed in an audio equipment, and a receiver unit installed in an earphone, wherein the transmitter unit includes an automatic electric level regulator to regulate the electric level of the output signal of audio equipment to a predetermined range, a power control circuit controlled by the output signal of the audio equipment to provide the necessary working voltage, and an inductance antenna to transmit output signal from the audio equipment to the receiver unit; the receiver unit is of low working voltage design, including an automatic 24-time frequency divider circuit to effectively discriminate left and right sound tracks, and an auto-shut off circuit to automatically cut off power supply when the audio equipment does no work; the transmitter unit and the receiver unit further use a respective dual oscillation frequency regulating circuit consisting of an oscillating transistor, a dielectric resonator, and two variable resistors for regulating
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: February 24, 1998
    Inventor: Jinsaun Chen
  • Patent number: 5715048
    Abstract: A calibration system for a measuring device utilizing a photo multiplier tube is provided. The calibration system is intended to provide a stable light source variable over a wide range of intensities which can be used to calibrate the PMT reading using a closed loop feedback circuit. The LED and a photo cell are disposed in a reference block chamber whereby the photo cell is in close proximity disposed perpendicular to the axis of the LED. The LED being dome shaped will direct light energy on to the photo cell, and also peripherally. The PMT is disposed adjacent the LED and at an angle to its longitudinal axis whereby light generated by the PMT simultaneously strikes both the photo cell and the PMT without reflection.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: February 3, 1998
    Assignee: Dynex Technologies, Inc.
    Inventor: Walter W. Taylor
  • Patent number: 5709513
    Abstract: An improved mounting structure includes a soft mounting sleeve having a locking hole at a central position for fitting into a through hole of a mount, and a screw fitted with a washer. In assembly, the screw is inserted into the mounting sleeve fitted into the mount before driven into a frame structure. When the screw is driven into the top side of the mount, the bottom side of the mounting sleeve will elevate with the turning of the screw to impose a pressure on the screw threads, thus preventing the screw from being driven further and achieving a good mounting effect. This arrangement also prevents the screw from driving unduly deep into the frame structure due to excessive torsional force to prevent any possible damage to the frame structure or the screw threads.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: January 20, 1998
    Inventor: Chun-Hsin Tsai
  • Patent number: 5704923
    Abstract: A liquid level detector and alarm device including an electrical bridge consisting of two infrared detectors for detecting the change of the liquid level of the infusion solution of a drip infusion set, an A/D converter, and a single chip microprocessor connected to the electrical bridge through the A/D converter and controlled by the electrical bridge to drive a buzzer when the liquid level drops below a predetermined value.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: January 6, 1998
    Inventors: Chiang Chiu-Hsiung, Kao Han-Chin
  • Patent number: 5700103
    Abstract: A mounting structure including a locking plate disposed between a mount and a frame structure is described. The locking plate is provided with a central locking hole. A screw is provided with a washer that has a plurality of teeth at the outer periphery of its bottom side. The screw is passed through the washer, the mount and the locking plate into the flame structure. The teeth of the washer clutch the surface of the mount and prevent movement with the turning of the screw. The locking plate will slightly elevate with the turning of the screw, imposing a pressure on the screw to stop it from turning. This ensures firm locking of the mount to the frame structure preventing the screw from driving unduly deep into the frame structure to damage the frame structure or the screw threads.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 23, 1997
    Inventor: Chun-Hsin Tsai
  • Patent number: 5697217
    Abstract: A turbocharged diesel engine has a two-stage turbocharger assembly comprising two low-pressure turbochargers coupled in parallel arranged in series with a single high-pressure turbocharger. This allows all turbochargers to be of comparable dimensions and allows for interchangeability of parts. The turbochargers may be mounted on an enclosure which encloses the turbines and the exhaust gas duct work and which communicates with the exhaust pipe to ensure that any leaking exhaust gas escapes to the atmosphere via the exhaust pipe.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: December 16, 1997
    Assignee: GEC- Alstholm Diesels Limited
    Inventors: John Nigel Ramsden, Ian Walter Drake
  • Patent number: 5699363
    Abstract: A digital signal processing apparatus for frequency multiplexing and demultiplexing of narrow band FDM signals has a first block fine processing stage (11) connected in series to a first block coarse processing stage (16, 17) and in parallel therewith a second block fine processing stage (11a) connected in series to a second block coarse processing stage (16, 17). The two stages 11 and 11a are coupled together at one side remote from the two coarse processing stages (16, 17) to provide a first port (14) and the stages (16 and 17) at the side remote from the port (14) provide a plurality of ports (15). Each stage (11, 11a) is a FIR lowpass filter and each stage (16, 17) incorporates a polyphase filter (16) in connection with a Fast Fourier Transform Unit (17).
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: December 16, 1997
    Assignee: MMS Space Systems Unlimited
    Inventors: Alexander Walker Wishart, Paul Simon Cornfield
  • Patent number: 5694290
    Abstract: A replaceable hard disk drive box structure including a box body and a securing seat accommodating the box body. The box body comprises a base, an inner face plate, an upper cover, and a handle. The inner face plate has two outwardly projecting mounting portions for accommodating respective fans. An identification code display is disposed between the mounting portions to allow the user to directly locate the hard disk on the SCSI interface. The outer ends of the inner face plate are respectively provided with coupling portions for connecting the handle. The handle has a projection resembling a quadrant of a circle at either end thereof so that the curvature of the projection of the handle may urge against a rectangular recess at either end of an access of the securing seat when the box body is pulled out, so that the connecting ports of the box body and the securing seat may smoothly disengage, achieving fast and easy installation and removal.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: December 2, 1997
    Inventor: Cheng-Chun Chang
  • Patent number: 5691667
    Abstract: An r.f. radiation absorbing material able to hold off a 30 to 40 kV voltage difference is described as formed by a silicon rubber loaded with ferrite particles. The material is used to reduce self-oscillation in amplifiers.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: November 25, 1997
    Assignee: English Electric Valve Co., Ltd.
    Inventors: Alan Hugh Pickering, Geoffrey John Rowlands, Roy Heppinstall, Edward Stanley Sobieradzki, Geoffrey Thomas Clayworth
  • Patent number: 5690344
    Abstract: An in-line roller skate having an improved sole plate structure includes a boot with an outer sole provided with a plurality of downwardly extending projections. Each projection is provided with a vertically oriented, elongated slot for receiving a bushing of an elastic plastic material for absorbing shock, and at least two pairs of mounting plates for clamping rollers between each pair pivotally-mounted to the corresponding projections. Each pair of mounting pairs secures two rollers at either end thereof. The mounting plates are arranged to be pairs of two and each pair of mounting plates is independently mounted to the projections of the boot. The in-line roller skate has good floor or ground adaptability and shock-absorbing effects.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: November 25, 1997
    Assignee: Playmaker-Co., Ltd.
    Inventor: Kim Chen
  • Patent number: 5691746
    Abstract: The present invention is related to an apparatus for digital video format conversion for a decompressed digital video data outputted from a decompressor, which includes a video interpolation device processing the decompressed digital video data by way of on-the-fly interpolating and filtering procedures to obtain an interpolated and filtered digital video data, and a color space converter electrically connected to the video interpolation device for converting the interpolated and filtered digital video data processed by the on-the-fly interpolating and filtering procedures from a first color space into a second one to complete the digital video format conversion. The present apparatus processes the decompressed digital video data by way of on-the-fly interpolating and filtering procedures and therefore the resolution of an original frame can be shown on a computer monitor to obtain a good frame quality.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: November 25, 1997
    Assignee: Winbond Electronics Corp.
    Inventor: Rong-Fuh Shyu
  • Patent number: 5688400
    Abstract: A modular sewage treatment plant is disclosed using a vessel adapted to contain the standard three phases of a sewage treatment, aeration, settling and clarification. The vessel of this invention uses an inverted, centrally located funnel section to received raw sewage to be treated at the upper opening, and to inject air, counter-currently, at a 180 degree angle to the descending sewage. The aerated sewage leaves the bottom of the aeration section and solids enter a settling section therebelow whereas water to be clarified rises around the outer surface of the funnel shaped aeration section. A hopper shaped bottom in the settling section is provided to facilitated solids removal and a weir system is provided on the upper surface of the clarification section to serve as a scum remover for the clarified water.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: November 18, 1997
    Assignee: Environmental Treatment Facilities, Inc.
    Inventor: Thomas D. Baxter, Sr.
  • Patent number: 5684364
    Abstract: In an electron beam tube such as a klystron, a vacuum seal comprises a ceramic cylindrical wall on which are brazed metal rings which are welded to flares and fixed to electrodes and of a collector. Ceramic rings and are located between the metal ring and the electrodes. The cylindrical wall includes inner flanges which overlap the inner peripheries of the metal rings hence reducing the likelihood of arcing occurring between them and other parts of the arrangement at different potentials. In other embodiments of the invention, the ceramic rings are extended to shield the inner edges of the metal rings or a separate ceramic tube is positioned within the metal rings to provided shielding.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: November 4, 1997
    Assignee: EEV Limited
    Inventors: Roy Heppinstall, Steven Bardell, Stuart William Andrews
  • Patent number: 5678899
    Abstract: The method of fusing brushware is disclosed whereby the molded component upon being tufted with synthetic filament, has a configured one-piece construction having both chemical and physical properties, which contribute to the straightness of the finished brushware where required and resulting in the working ends of said brushware being in the same attitude and configuration as the surface being cleaned.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: October 21, 1997
    Assignee: Tucel Industries, Inc.
    Inventor: John C. Lewis, Jr.
  • Patent number: 5670118
    Abstract: A method and procedure for color coding cuvettes used in laboratory tests without contaminating the interior thereof or changing its binding properties is described. In the procedure of this invention, transparent plastic cuvettes are utilized which are flat bottomed and have a depending rim surrounding the flat bottom. The depending surface of the rim then has color applied thereto by a conventional technique either hot stamping, or by ultra-violet cured silk screen printing. In either event, a colored surface is formed on the rim. The transparent walls of the cuvette then by light pipe effect give the appearance that the color surrounds the upper opening of such cuvette when in fact the opening is of transparent plastic.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: September 23, 1997
    Assignee: Dynex Technologies, Inc.
    Inventor: Dennis Keith Sponholtz
  • Patent number: D384289
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: September 30, 1997
    Inventor: Ming Kun Chan
  • Patent number: D387500
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: December 9, 1997
    Inventor: Chiang Wen-Tsai
  • Patent number: D388551
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: December 30, 1997
    Inventor: Tung Feng Lu