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).
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Patent number: 6984897Abstract: 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: GrantFiled: November 10, 2003Date of Patent: January 10, 2006Assignee: Spellman High Voltage Electronics CorporationInventors: S. Merrill Skeist, Richard H. Baker
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Patent number: 6954004Abstract: 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: GrantFiled: November 10, 2003Date of Patent: October 11, 2005Assignee: Spellman High Voltage Electronics CorporationInventors: S. Merrill Skeist, Richard H. Baker
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Patent number: 6924991Abstract: 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: GrantFiled: November 10, 2003Date of Patent: August 2, 2005Assignee: Spellman High Voltage Electronics CorporationInventors: S. Merrill Skeist, Richard H. Baker
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Publication number: 20040257832Abstract: 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: ApplicationFiled: November 10, 2003Publication date: December 23, 2004Inventors: S. Merrill Skeist, Richard H. Baker
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Publication number: 20040145932Abstract: 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: ApplicationFiled: November 10, 2003Publication date: July 29, 2004Inventors: S. Merrill Skeist, Richard H. Baker
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Patent number: 6469469Abstract: 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 tType: GrantFiled: September 1, 2000Date of Patent: October 22, 2002Assignee: Spellman High Voltage Electronics Corp.Inventors: Derek Chambers, Richard H. Baker, S. Merrill Skeist
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Publication number: 20020147390Abstract: 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: ApplicationFiled: December 20, 2001Publication date: October 10, 2002Inventors: John Emmanuel M.D. Markis, E. John Groener, Richard H. Baker, William S. Oncay, Anthony G. P. Marini
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Patent number: 6338167Abstract: 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: GrantFiled: November 22, 1999Date of Patent: January 15, 2002Inventors: Richard H. Baker, Krista K. Finigan, Anthony G. P. Marini
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Patent number: 6286441Abstract: 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: GrantFiled: April 30, 1999Date of Patent: September 11, 2001Assignee: Steelcase Development CorporationInventors: Roger D. Burdi, Richard H. Baker, John W. Ooms
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Patent number: 5183319Abstract: 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: GrantFiled: February 20, 1992Date of Patent: February 2, 1993Assignee: Steelcase, Inc.Inventors: Alan L. Pearson, Richard H. Baker
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Patent number: 5050523Abstract: 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: GrantFiled: October 17, 1990Date of Patent: September 24, 1991Assignee: The United States of America as represented by the Secretary of the NavyInventors: John A. Schwemin, Richard H. Baker, James M. Sowle, Stephen A. Jordan
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Patent number: 4680490Abstract: 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: GrantFiled: April 2, 1985Date of Patent: July 14, 1987Assignee: Gould Inc.Inventors: Richard H. Baker, Edward L. Maddox
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Patent number: 4536699Abstract: 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: GrantFiled: January 16, 1984Date of Patent: August 20, 1985Assignee: Gould, Inc.Inventor: Richard H. Baker
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Patent number: 4523269Abstract: 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: GrantFiled: November 16, 1983Date of Patent: June 11, 1985Assignee: Reliance Electric CompanyInventors: Richard H. Baker, David L. Chu, Derek Chambers
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Patent number: 4432032Abstract: 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: GrantFiled: March 1, 1982Date of Patent: February 14, 1984Assignee: Exxon Research and Engineering CompanyInventors: Richard H. Baker, Miroslav Glogolia
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Patent number: 4375662Abstract: 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: GrantFiled: November 26, 1979Date of Patent: March 1, 1983Assignee: Exxon Research and Engineering Co.Inventor: Richard H. Baker
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Patent number: 4367421Abstract: 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: GrantFiled: April 21, 1980Date of Patent: January 4, 1983Assignee: Reliance Electric CompanyInventor: Richard H. Baker
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Patent number: 4366522Abstract: 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 secondType: GrantFiled: May 2, 1980Date of Patent: December 28, 1982Assignee: Reliance Electric CompanyInventor: Richard H. Baker
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Patent number: 4365281Abstract: 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: GrantFiled: June 18, 1980Date of Patent: December 21, 1982Assignee: Reliance Electric CompanyInventor: Richard H. Baker
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Patent number: 4352998Abstract: 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: GrantFiled: April 7, 1980Date of Patent: October 5, 1982Assignee: Reliance Electric CompanyInventors: Richard H. Baker, Bruce D. Semanchik