Patents by Inventor Richard H. Baker

Richard H. Baker 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: 6984897
    Abstract: An electro-mechanical energy conversion system coupled between an energy source and an energy load comprising an energy converter device including a permanent magnet induction machine coupled between the energy source and the energy load to convert the energy from the energy source and to transfer the converted energy to the energy load and an energy transfer multiplexer to control the flow of power or energy through the permanent magnetic induction machine.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: January 10, 2006
    Assignee: Spellman High Voltage Electronics Corporation
    Inventors: S. Merrill Skeist, Richard H. Baker
  • Patent number: 6954004
    Abstract: An electro-mechanical energy conversion system coupled between an energy source and an energy load including an energy converter device having a doubly fed induction machine coupled between the energy source and the energy load to convert the energy from the energy source and to transfer the converted energy to the energy load and an energy transfer multiplexer coupled to the energy converter device to control the flow of power or energy through the doubly fed induction machine.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: October 11, 2005
    Assignee: Spellman High Voltage Electronics Corporation
    Inventors: S. Merrill Skeist, Richard H. Baker
  • Patent number: 6924991
    Abstract: An energy transfer multiplexer to control the flow of power or energy between an energy source and an energy load comprising a bi-directional inverter including a first bank or plurality of switches or first plurality of energy transfer control points and a second bank or plurality of switches or second plurality of energy transfer control points operatively coupled by a series resonant transfer link to selectively control the direction of power or energy flow between the first and second bank or plurality of switches or the first and second plurality of energy transfer control points.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: August 2, 2005
    Assignee: Spellman High Voltage Electronics Corporation
    Inventors: S. Merrill Skeist, Richard H. Baker
  • Publication number: 20040257832
    Abstract: An electro-mechanical energy conversion system coupled between an energy source and an energy load comprising an energy converter device including a permanent magnet induction machine coupled between the energy source and the energy load to convert the energy from the energy source and to transfer the converted energy to the energy load and an energy transfer multiplexer to control the flow of power or energy through the permanent magnetic induction machine.
    Type: Application
    Filed: November 10, 2003
    Publication date: December 23, 2004
    Inventors: S. Merrill Skeist, Richard H. Baker
  • Publication number: 20040145932
    Abstract: An energy transfer multiplexer to control the flow of power or energy between an energy source and an energy load comprising a bi-directional inverter including a first bank or plurality of switches or first plurality of energy transfer control points and a second bank or plurality of switches or second plurality of energy transfer control points operatively coupled by a series resonant transfer link to selectively control the direction of power or energy flow between the first and second bank or plurality of switches or the first and second plurality of energy transfer control points.
    Type: Application
    Filed: November 10, 2003
    Publication date: July 29, 2004
    Inventors: S. Merrill Skeist, Richard H. Baker
  • Patent number: 6469469
    Abstract: A variable output induction motor drive system for use with a polyphase variable output alternating current motor including a rotor and stator to drive an operating load such as an automotive vehicle, the variable output induction motor drive system comprises a sine wave current generator operatively coupled to a direct current power source to receive direct current therefrom and to generate a variable sine wave current and operatively coupled to the polyphase variable output alternating current motor to selectively feed the variable sine wave current thereto and a sine wave current control coupled between the sine wave power current generator and the polyphase variable output alternating current motor to monitor the operating parameters of the polyphase variable output alternating current motor and to control the amplitude and frequency of the variable sine wave current fed from the sine wave current generator to the polyphase variable output alternating current motor to control the output torque and speed t
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: October 22, 2002
    Assignee: Spellman High Voltage Electronics Corp.
    Inventors: Derek Chambers, Richard H. Baker, S. Merrill Skeist
  • Publication number: 20020147390
    Abstract: A system for gathering, displaying and analyzing vital sign data hospital patient. A handheld computer including a touchscreen and a barcode scanner is linked via a WLAN network to a database server which stores patient data at a central location. The handheld computer includes a browser program for displaying HTML data entry forms transmitted from the database server which the nurse/operator uses to supply vital signs data such as the patient's current temperature, blood pressure, pulse rate, and respiration rate. Further data entry forms allow the entry of body intake and output amounts and the patients weight. A barcode scanner integrated with the handheld computer may be used to read patient and operatior identification values, as well as medication identification values, from printed media. The touchscreen controls allow current vital sign values to be incremented or decremented.
    Type: Application
    Filed: December 20, 2001
    Publication date: October 10, 2002
    Inventors: John Emmanuel M.D. Markis, E. John Groener, Richard H. Baker, William S. Oncay, Anthony G. P. Marini
  • Patent number: 6338167
    Abstract: This invention is related generally to detachable assemblies and more particularly to novel hardware for easily attaching or removing portable members from stationary structures. A quick acting fastener assembly is described for attaching a portable member, such as a toilet seat, to a stationary member, such as a toilet bowl, for example. The portable member carries a pair of headed pins fixed to the margin thereof and projecting outward to mate with receptacles on the stationary member. Said pins and the mating receptacles are of a unique design such that when the pins are inserted into the matching receptacles the portable member is securely fastened to the stationary member, yet can be removed, disengaged, without any adjustments (levers pulled, fasteners removed, etc.). The distinguishing feature of this invention is in the simplicity of the mechanical hardware, the absence of moving parts, springs, fasteners, levers, or removable nuts, etc.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: January 15, 2002
    Inventors: Richard H. Baker, Krista K. Finigan, Anthony G. P. Marini
  • Patent number: 6286441
    Abstract: A motorized height adjustable table having a support base, a top assembly including a substantially horizontally disposed work surface, and first and second powered drive assemblies for raising and lowering the work surface. The first and second drive assemblies have first and second electric motors and drivingly engage the top assembly for effecting vertical movement of the top assembly to adjust the height of the work surface. A controller is coupled to the first and second drive assemblies for simultaneously controlling the first and second electric motors. The controller senses a relative height displacement between the first and second drive assemblies and de-energizes the motor controlling for the leading drive assembly until the relative difference in height between the first and second drive assemblies is substantially zero.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: September 11, 2001
    Assignee: Steelcase Development Corporation
    Inventors: Roger D. Burdi, Richard H. Baker, John W. Ooms
  • Patent number: 5183319
    Abstract: A system for leveling and securing an overhead cabinet to modular furniture including a pair of spaced posts, each post including a lower end adapted to connect to the modular furniture and an upper end adapted to connect to the overhead cabinet, the upper ends each including a pair of leveling screws so that the overhead cabinet can be both leveled and aligned with adjacent overhead cabinets.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: February 2, 1993
    Assignee: Steelcase, Inc.
    Inventors: Alan L. Pearson, Richard H. Baker
  • Patent number: 5050523
    Abstract: The launching of a vehicle having front and back ends, from the submerged ll of a vessel that is moving forward through water by allowing the vehicle to pivot outboard clear of the hull, preferably from a launchway cavity, into the flow stream where it is released to move under its own propulsion and/or buoyancy forces. A first mechanism is carried on a submerged exterior surface of the hull and connected to the front portion of the vehicle, for initially supporting the vehicle front portion adjacent to the hull in the direction of hull travel, and then selectively releasing the front portion of the vehicle from the hull so that the front portion can move laterally away from the hull into the flow stream.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: September 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John A. Schwemin, Richard H. Baker, James M. Sowle, Stephen A. Jordan
  • Patent number: 4680490
    Abstract: A solid state relay is responsive to a control signal and is used with an impedance load and a source of alternating electrical power. The solid state relay is used to connect and disconnect the load from the source of alternating electrical power. The solid state relay turns on in response to a control signal and to a substantially zero voltage crossing of the alternating electrical power of the source. The solid state relay turns off in response to the control signal and to a substantially zero current crossing of the alternating electrical power of the source.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: July 14, 1987
    Assignee: Gould Inc.
    Inventors: Richard H. Baker, Edward L. Maddox
  • Patent number: 4536699
    Abstract: A low voltage series pass regulator configuration has an input terminal for receiving a predetermined input voltage and an output terminal operatively connected to a load. The regulator comprises at least one field effect transistor in a source follower configuration. The drain of the field effect transistor is operatively connected to the input terminal and the source is operatively connected to the output terminal which provides an output voltage across the load. In one embodiment of the present invention a current limiter is operatively connected between the source and a gate of the field effect transistor. In another embodiment of the present invention a comparator for comparing the output voltage to a first reference voltage is provided. The comparator supplies a control voltage, indicative of the value of the output voltage compared to the first reference voltage, to the gate of the field effect transistor.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: August 20, 1985
    Assignee: Gould, Inc.
    Inventor: Richard H. Baker
  • Patent number: 4523269
    Abstract: A DC to N phase AC converter, where N is an integer greater than 2, includes a DC source having first and second terminals for deriving equal amplitude opposite polarity DC voltages, a series resonant circuit, and N output terminals, one for each phase of the converter. The series resonant circuit is selectively connected in series with the first and second terminals and the N output terminals for an interval equal to one half cycle of the resonant circuit resonant frequency, so that current flows between a selected one of the first and second terminals and the resonant circuit and a selected one of the N output terminals during the interval. The resonant circuit current is zero at the beginning and end of the interval. A capacitor shunting each of the output terminals has a value relative to the capacitance of the series resonant circuit such that the voltage across each output terminal remains approximately constant between adjacent exchanges of energy between the resonant circuit and the output terminal.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: June 11, 1985
    Assignee: Reliance Electric Company
    Inventors: Richard H. Baker, David L. Chu, Derek Chambers
  • Patent number: 4432032
    Abstract: In an inverter comprising power transistors selectively switched on and off to supply a predetermined current waveform to an inductive load, including a standard RC voltage snubber for suppressing load generated voltage surges during turn-off transitions of the switching transistors, an auxiliary snubber is connected across the load to provide snubbing at the start of the turn-off transitions when the conventional voltage snubber is inoperative due to an inherent snubber time constant. The auxiliary snubber comprises a grounded capacitor that is maintained charged directly from the voltage supply. The output of the capacitor is connected to the load through an SCR that is gated on during the on periods of the switching transistors during normal operation. The output voltage is equal to the auxiliary snubber capacitor voltage during normal operation so that there is no current flow through the SCR. During a load current overload, the switching transistors are turned off.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: February 14, 1984
    Assignee: Exxon Research and Engineering Company
    Inventors: Richard H. Baker, Miroslav Glogolia
  • Patent number: 4375662
    Abstract: The d.c. power supplied by a photovoltaic solar panel to a load is controlled by monitoring the slope of the panel voltage vs. current characteristic and adjusting the current supplied by the panel to the load so that the slope is approximately unity. The slope is monitored by incrementally changing the panel load and indicating whether the resulting change in current derived from the panel is above or below a reference value, indicative of the panel voltage. In response to the change in the monitored current being above the reference value, the slope of a voltage vs. current curve is greater than unity and the load is adjusted to decrease the current supplied by the panel to the load. Conversely, in response to the current being less than the reference value, the slope of the voltage vs. current curve is less than unity and the load is adjusted to increase the current supplied by the panel to the load.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: March 1, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventor: Richard H. Baker
  • Patent number: 4367421
    Abstract: In one embodiment of the invention, a switching circuit is provided by connecting the main current paths of a plurality of relatively low voltage transistors in series for switching a relatively high level of voltage, with zener diodes being connected across the main current paths of each one of the transistors, the zeners having a breakdown voltage rating no greater than the inverse voltage rating of their respective transistor, and polarized for breaking down whenever the inverse voltage rating of the transistor is exceeded, the zener diodes also providing a voltage divider circuit for applying appropriate levels of bias voltage to the common connections between the transistors for ensuring the inverse voltage ratings of the transistors are not exceeded at times that the transistors are all turned off, or non-conductive.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: January 4, 1983
    Assignee: Reliance Electric Company
    Inventor: Richard H. Baker
  • Patent number: 4366522
    Abstract: A high-power, solid-state switching circuit includes in a preferred embodiment a first switching device susceptible to damage from excessive peak power dissipation at times of turn-on and turn-off in switching high currents from a relatively high-voltage supply, the first switching device having its main current path connected in parallel with the main current path of a second switching device that is substantially less susceptible to such damage from excessive peak power dissipation, but which has a substantially higher impedance in its main current path than the first device when turned on, the devices complementing one another via the operation of said switching circuit for turning on the second device before the first device, thereby substantially lowering the voltage across the main current path of the first device, allowing the latter to be turned on and turned off with substantially reduced peak power dissipation via the snubbing effect of the second device, and the first device relative to the second
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: December 28, 1982
    Assignee: Reliance Electric Company
    Inventor: Richard H. Baker
  • Patent number: 4365281
    Abstract: A protection circuit for a switching amplifier having a plurality of serially stacked switching transistors includes a voltage breakdown device and a current responsive device for sensing the voltage developed between the emitter and collector electrodes of each conducting switching transistor. The base drive for any transistor is removed in response to Vce of a switching transistor exceeding a predetermined value.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: December 21, 1982
    Assignee: Reliance Electric Company
    Inventor: Richard H. Baker
  • Patent number: 4352998
    Abstract: A common mode rejection coupler in a power switching system having a variable common mode voltage includes a first optical isolator circuit for receiving an input signal and generating in response thereto a first signal which is normally isolated with respect to the common mode voltage. A second optical isolator circuit receives the complement of the input signal and generates a second signal which is also normally isolated with respect to the common mode voltage. The first and second signals are the complement of one another. A comparator receives the first and second signals and generates an output signal which changes state only when the first and second signals complement states. Feedback control circuitry for the comparator is provided for limiting transient changes in one of the first and second signals to prevent the comparator from changing output states when a transient change occurs in one of the first and second signals resulting from a change in the common mode voltage.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: October 5, 1982
    Assignee: Reliance Electric Company
    Inventors: Richard H. Baker, Bruce D. Semanchik