Patents by Inventor John A. Wade

John A. Wade 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: 6315381
    Abstract: The present invention is an energy control system and method for an inkjet printer cartridge for controlling the droplet firing energy. One embodiment of the present invention includes calibrating an inkjet print cartridge having a printhead die divided into sections. This method includes selecting an operational range of the inkjet print cartridge, measuring the electrical characteristics of the electrical components over this operational range, calculating an optimal calibration value for the electrical characteristics of each section, and storing these optimal calibration values. In addition, the present invention allows operation of an inkjet printer having a print cartridge for determining optimal operating settings for the print cartridge.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: November 13, 2001
    Assignee: Hewlett-Packard Company
    Inventors: John Wade, Graham Ross
  • Patent number: 6192905
    Abstract: The present invention 10 discloses an improved device for cleaning the inside of vessels 12 which could include truck tankers or rail car tankers. The present invention discloses a generally vertically standing rotatable support member 24 having mounted thereon a parallel pair of lazy tong assemblies or configurations 22 being a series of jointed and pivoted bars or arms, e.g., 28, capable of being extended over a great distance. Mounted on the distal end of the lazy tong assembly 22 is a spray head 32 having multiple spray outlets 42 and being fluidly connected to a supply of cleaning liquid 18 located on the outside of the vessel 12 which is being cleaned.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: February 27, 2001
    Inventors: John Wade Mincy, John Wayne Mincy
  • Patent number: 6120139
    Abstract: Disclosed is a printing device that overcomes the thermal problems of previous printheads caused by heat generation by providing better cooling of the printhead,avoids bubble accumulation near the printhead which can starve the printhead of ink and provides sufficient volume for air accumulation away from the printhead. The printing device including an outer housing, a substrate having a front surface on which is formed ink ejection chambers and having a back surface, an ink conduit having a distal end proximate to the back surface of the substrate, the ink conduit, the outer housing and the substrate defining an ink flow path to the ink ejection chambers and a bubble accumulation chamber in communication with the ink flow path such that bouyancy will tend to move bubbles that accumulate in the ink flow path into the bubble accumulation chamber.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: September 19, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Winthrop Childers, John Wade, Joe R. Pietrzyk
  • Patent number: 6036469
    Abstract: A quick change system and method of interchanging molds on plastic extrusion blow molding machines is disclosed wherein a universal standard subplate is provided for use with different blow molding machines on which a variety of different mold units are removably mounted on the standard subplate with the subplate establishing a preselected precisely aligned relation automatically between the mold unit and a machine platen. A quick release locking device is provided between each mold unit and a unitary standard water manifold and detabber assembly. The unitary standard assembly is provided as a one-piece component with fluid connections communicating respectively with water and air supply sources of the water manifold and detabber and which are conveniently maintained attached without being disconnected during detachment of the unitary standard assembly from the mold unit during a mold change.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: March 14, 2000
    Assignee: Heise Industries, Inc.
    Inventors: John Wade Allen, Brooks B. Heise, Jr.
  • Patent number: 5964370
    Abstract: A condensate pan is adapted for use in either a left or right horizontal fan coil installation, and includes left and right mirror image sides interconnected with a central section having on its lower surface a riser near one end, and each of the halves having a drainage opening on the other end, such that when the evaporator coil is placed in the condensate pan, the pan is tipped about the riser to lower one side and raise the other, depending on whether its a left or right horizontal installation, such that drainage occurs from the lower side drainage opening. The drainage opening is so located with respect to the floor of the pan that, when a drain pipe is threadably connected thereto, its lower inner surface is disposed vertically below the pan floor to thereby enhance its drainage characteristics.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 12, 1999
    Assignee: Carrier Corporation
    Inventors: Raymond A. Rust, Jr., Timothy J. Perry, Mark D. Singer, Randall D. Allen, John A. Wade, Richard D. Watkins
  • Patent number: 5821708
    Abstract: A method and apparatus for controlling the speed of a multi-phase, brushless DC electrically commutated motor (ECM). Voltage is commutated to the windings of the ECM based on rotor position information derived from back EMF or Hall effect sensors. The application of the commutating voltages is arranged such that the voltage applied to the windings always leads the back EMF generated in the windings by a selected constant lead angle. The speed of the motor is then controlled by pulse width modulating (PWM) the voltage applied to the windings of the ECM.
    Type: Grant
    Filed: June 8, 1995
    Date of Patent: October 13, 1998
    Assignee: Fisher & Paykel Limited
    Inventors: John Julian Aubrey Williams, Christian John Wade Gianni
  • Patent number: 5790792
    Abstract: The present invention is directed to a system comprising one or more multimedia workstations, a high-speed data network, and one or more multimedia servers and associated multimedia network adapters. The server of the present invention may be implemented to be responsible for almost all data processing functionality, relieving the client workstation of this responsibility, and allowing the workstation to serve instead as a repository for multimedia data. In one embodiment, true color pictures, graphic images, etc. are sent directly by the server to each workstation over a high-speed data network with no processing or encoding. For example, a 640.times.480.times.16 bit/pixel image could be sent at 640.times.480.times.2=614,400 bytes of network data. The workstation client needs to perform no substantive processing on the data in order to display it on a video display. Rather, the workstation needs only to store the data to a local graphics frame buffer.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: August 4, 1998
    Assignee: Radiant Systems, Inc.
    Inventors: Michael Dudgeon, Michael Finley, Thomas Tooley, John Wade
  • Patent number: 5715697
    Abstract: A condensate pan is adapted for use in either a left or right horizontal fan coil installation, and includes left and right mirror image sides interconnected with a central section having on its lower surface a riser near one end, and each of the halves having a drainage opening on the other end, such that when thee evaporator coil is placed in the condensate pan, the pan is tipped about the riser to lower one side and raise the other, depending on whether its a left or right horizontal installation, such that drainage occurs from the lower side drainage opening. The drainage opening is so located with respect to the floor of the pan that, when a drain pipe is threadably connected thereto, its lower inner surface is disposed vertically below the pan floor to thereby enhance its drainage characteristics.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: February 10, 1998
    Assignee: Carrier Corporation
    Inventors: Raymond A. Rust, Jr., Timothy J. Perry, Mark D. Singer, Randall D. Allen, John A. Wade, Richard D. Watkins
  • Patent number: 5682185
    Abstract: A method for operating a thermal ink jet printer including a printhead having a sample resistor and ink firing heater resistors responsive to pulses provided to the printhead. The resistance of a sample resistor is read and the pad to pad resistance of the printhead is determined. The operating energy of the printhead is determined from a look-up table and the target power is determined from the target pulse width. The power supply voltage is determined from the target power and the power supply voltage is set. The operating power is determined and the operating pulse width is set based on the operating power and target energy.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: October 28, 1997
    Assignee: Hewlett-Packard Company
    Inventors: John Wade, Brian Canfield
  • Patent number: 4489809
    Abstract: A grease pump for railroad tracks operable by vertical deflections of the rail caused by the weight of the train as the train wheels pass over the track. The pump comprises a housing anchored to the ground and connected to a grease source. Pump operating means comprise a rigid beam connected to the track rail at one end and to a pump operating rod at an opposite end. The operating rod is connected to a cap-like pressure member fitting over the housing and operable by the rail deflection movement to draw grease through inlet port means from the grease source and pump the grease through outlet port means to a track lubricator. Check valves are provided in the pump to control the grease flow.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: December 25, 1984
    Inventor: John A. Wade
  • Patent number: 4000922
    Abstract: A collapsible carrier for kegs and the like. The carrier is in the form of a ring-like clamp comrised of semicircular ring members piovted on opposite sides of the clamp and opening to fit around a keg or barrel. Handle bars are provided at opposite sides and when they are lifted the clamp is closed and upwardly directed tooth-like gripping members are caused to engage the keg in firm gripping engagement. The handle, ring members and gripping teeth are formed in a special angular relationship to provide an I-beam type strength to the ring members and self-clamping force through the lifting action on the handles. When not in use the carrier can be collapsed together to half its expanded size as a convenience in storage.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: January 4, 1977
    Inventor: John A. Wade