Patents Represented by Attorney, Agent or Law Firm Curtis L. Harrington
  • Patent number: 6860347
    Abstract: An electric drive attachment for a wheelchair comprising a drive housing containing an electric motor, a drive wheel which touches the ground and drives the wheelchair through frictional contact with the ground and speed reducing mechanism between the motor and drive wheel, attachment structure to attach the wheelchair drive unit to the wheelchair as a pair of clamps one on each side of the frame. Also included are torque dampening systems to reduce the shock of starting the motor, a clutch which enables manual forward movement of a wheelchair without engagement of the motor and without dragging of the drive wheel, an under run wheel and positive pressurization of the gear works and area surrounding the drive wheel to keep the housing free of debris.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: March 1, 2005
    Assignee: Daka Research Inc.
    Inventors: Clive Marles Sinclair, Alexander Joseph Kalogroulis
  • Patent number: 6849064
    Abstract: A minimal incision maximal access system allows for maximum desirable exposure along with maximum access to the operative field utilizing a minimum incision as small as the METRx and Endius systems. Instead of multiple insertions of dilating tubes the design is is a streamlined single entry device to avoid repetitive skin surface entry. The system offers the capability to expand to optimum exposure size for the surgery utilizing hinged bi-hemispherical or oval working tubes applied over an introducer obturator which is controllably dilated to slowly separate muscle tissue. Deeper end working and visualization areas with maximum proximal access and work dimensions are provided to makes the operative procedure safer in application and shorten the surgeons's learning curve because it most closely approximates the ability to use open microdiskectomy techniques.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: February 1, 2005
    Inventor: James S. Hamada
  • Patent number: 6848385
    Abstract: An underwater motive device utilizes a plastic rear housing which includes a battery storage space sealed with a tight fit to provide sealing, a pressured removal system is provided to pressurize the sealed battery chamber to enable the front wall to be removed. The motor is microprocessor controlled for safety by providing a slight delay before energizing the motor, and by providing some time in residence at a slow speed before switching to a higher speed. The result is a safe underwater motive device which will not accidentally become power actuated before the user is able to securely grasp and direct it, and which will not go to full speed except from a low speed to give the user a chance to stabilize himself in the water. Further, the control circuitry includes other features to provide both long battery life, good serviceable usage and battery preservation and motor preservation.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: February 1, 2005
    Inventor: Pat Y. Mah
  • Patent number: 6817933
    Abstract: A plurality of spaced apart supports are designed to closely support a work piece immediately adjacent the edge being worked, ground or polished. Adjacent shear forced are also eliminated by the use of a polymeric interconnections used to both generally contribute to the spacing and to transmit the vacuum in a distributed manner among the individual support units. The top and bottom surfaces of the supports are dressably machineable in place on the working table to insure that all are brought to exactly the same height to insure even support, and utilize a hardened rubber, or any other suitable machinable material which will not enable the work piece to displace significantly downwardly upon the application of vacuum. The tops and bottoms, as a group, are selectively operable. The ability to periodically dress both ends of the interconnected supports gives the user the power to continually insure that each interconnected support set is within a more exacting vertical tolerance.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: November 16, 2004
    Inventor: John Blick
  • Patent number: 6807783
    Abstract: A window frame molding system with removeable and interchangeable moldings of the present invention provide an organizational system which can be used to install, change, and remove window frame moldings while not damaging the window frame itself. For a rectangular installation, the entire structure can consist of four straight pieces of metal, plastic, synthetics, or wood, as mounting members, with the ends either flat or cut angularly at 45°, as the base of the structure. Further, four decorative moldings and four junction pieces of metal, plastic, synthetics, or wood, interfit with the mounting member in a configuration with the moldings being slide locked into place and the junction pieces securing the decorative moldings in place. Because of the variety of materials which can be used to make the window frame moldings, they are both inexpensive and easy to manufacture.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: October 26, 2004
    Inventor: Han-Sen Lee
  • Patent number: 6808288
    Abstract: A light generating flashlight system device utilizes a large centrally located magnet which is mounted to slide past a magnet pickup or current induction wire which may be preferably mounted at a center point of travel in a tubular housing having a tubular chamber through which the magnet travels. A pair of elastomeric dampers are located each at the end of a support system sleeve which is sized to fit within a main housing to stabilize all internal support within a sealed unit. The result is a device which both facilitates the manual movement of the flashlight body so that the magnet slides past the center magnet pickup or current induction wire, and also conserves the residual momentum of the magnet once it has traveled past the magnet pickup or current induction wire by providing a bumper and spring to conserve some of the mechanical energy going in the other direction. Ninety second of manual activation enables about five minutes of illumination.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: October 26, 2004
    Inventor: Pat Y. Mah
  • Patent number: 6805681
    Abstract: The purpose of this invention is to provide taping socks which hold the ankle so as to protect the instep or the Achilles' tendon and prevent intorelance during walking or exercising. In the taping socks which have tightening parts woven in the socks, the first tightening part 7a is to tighten the Achilles' tendon and to be knitted around an ankle part S00, and a second tightening part 7b is to tighten an arch part P00 and to be knitted around the instep part 5. The said first tightening part 7a and said second tightening part 7b are crossed in an X shape at a flection part of front side to protect the Achilles' tendon and the instep part as well as hold the ankle part S00.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: October 19, 2004
    Inventor: Yoshiyuki Yokoyama
  • Patent number: 6799700
    Abstract: Dilute chemical carrying systems include multiple embodiments of pressurizable and gravity feed reservoirs, and are provided for support and carriage of a segregated accommodation space, in some cases separately provided and in others integrally provided, for metered introduction of a concentrate into such reservoir. The structures both provide storage for concentrated chemical containers, and metered measurement while eliminating waste, make up time and minimizing contact between workers and the chemicals or nutrients in their concentrated state. Metering may be preferably provided by a pump assembly, and operational blocking of the pump assembly may be provided in separate or integrated structures. A concentrate container system enables users to recycle sealed containers to even further eliminate the necessity to directly handle concentrate.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: October 5, 2004
    Inventors: Andrew Durant, David Millar, Steven Baranek
  • Patent number: 6785700
    Abstract: An architecture component for use in performing a wavelet transform of a sampled signal, and an architecture including such components are disclosed. The architecture component includes a multiplier, and a multiplexor to multiplex a number n of filter coefficients onto the multiplier. The multiplier processes n consecutive samples with consecutive coefficients, successive multiplier outputs being stored for subsequent processing to generate an output of the filter after every n samples. The wavelet transform may be a discrete wavelet transform or a wavelet packet decomposition. The architecture component may be configured to multiplex two or more coefficients onto a multiplier. Embodiments are disclosed in which the components are derived from a parameterized description in a hardware description language.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: August 31, 2004
    Assignee: Amphion Semiconductor Limited
    Inventors: Shahid Masud, John Vincent McCanny
  • Patent number: 6783003
    Abstract: A needle holder has a variety of features that make it an optimal device for safe storage and disposal of hypodermic needles. The needle holder of the present invention includes at least one hypodermic needle retainer for engaging and keeping a hypodermic needle. Further, the needle holder includes a receptacle that may accommodate surgical needles or other small sharps or biologically contaminated articles. The needle holder may be easily and conveniently employed in a variety of settings. Alternative embodiments will accommodate double-ended hypodermic needles, and will also accommodate larger versions of hypodermic needles such as thoracic, cardiac, or spinal needles, and which has additional support provision including hook arms and an adhesive layer.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: August 31, 2004
    Inventors: Kendell Simm, Dale Emis
  • Patent number: 6769472
    Abstract: The structures and process for producing the structures of the invention enable extensive and efficient use of block scrap for slat manufacturing. The techniques employed advantageously accomplish two goals simultaneously, enabling scrap, such as block scrap, to be formed into longer effective lengths. Such longer effective lengths can then be cutably formed into slats of various sizes. The joinder of the block scrap is by deeply extending, finite interlock length finger joints which, once the material is cutably formed into slats, remain as relatively shallow (the thickness of the slat) and finite interlock length finger joints. The joints have the added benefit that they statistically “break up” any grain differences which would otherwise create warp, and enable long lengths of slat to be employed from several shorter lengths of scrap. An applied covering layer may be applied by wrapping or insertion.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: August 3, 2004
    Inventor: Han-Sen Lee
  • Patent number: D501292
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: February 1, 2005
    Inventor: Susan Wardell
  • Patent number: D494801
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: August 24, 2004
    Inventor: Han-Sen Lee
  • Patent number: D495328
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: August 31, 2004
    Inventor: Cha-Shun Chang
  • Patent number: D495770
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: September 7, 2004
    Inventor: Roger William Hickey
  • Patent number: D496621
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: September 28, 2004
    Inventor: Robert Roy McMath
  • Patent number: D496657
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: September 28, 2004
    Inventor: Pat Y. Mah
  • Patent number: D498865
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: November 23, 2004
    Inventor: Pat Y. Mah
  • Patent number: D500044
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: December 21, 2004
    Inventor: Cha-Shun Chang
  • Patent number: D500046
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: December 21, 2004
    Inventor: Cha-Shun Chang