Patents by Inventor David B. Parks

David B. Parks 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: 10318170
    Abstract: Solid state memory technology is disclosed. A solid state memory component can include a plurality of bit lines, a source line, and a plurality of non-functional memory pillars. Each non-functional memory pillar is electrically isolated from one or both of the plurality of bit lines and the source line. A solid state memory component can include a plurality of pillars located in a periphery portion of the solid state memory component, and memory cells adjacent to each of the pillars. Associated systems and methods are also disclosed.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: June 11, 2019
    Assignee: Intel Corporation
    Inventors: Jun Zhao, Gowrisankar Damarla, David A. Daycock, Gordon A. Haller, Sri Sai Sivakumar Vegunta, John B. Matovu, Matthew R. Park, Prakash Rau Mokhna Rau
  • Patent number: 6477065
    Abstract: A power supply (500) with vertical field effect transistor synchronous rectifiers (VFET1 and VFET2) having drivers (VFET Driver1 and VFET Driver2) which provide bipolar mode of operation by diode clamping an inductor overshoot which forwards biases the gate-source junction. The rectifiers have low on resistance useful in low output voltage power supplies.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: November 5, 2002
    Assignee: Texas Instruments Incorporated
    Inventor: David B. Parks
  • Publication number: 20020110004
    Abstract: A power supply (500) with vertical field effect transistor synchronous rectifiers (VFET1 and VFET2) having drivers (VFET Driverl and VFET Driver2) which provide bipolar mode of operation by diode clamping an inductor overshoot which forwards biases the gate-source junction. The rectifiers have low on resistance useful in low output voltage power supplies.
    Type: Application
    Filed: February 20, 2001
    Publication date: August 15, 2002
    Inventor: David B. Parks
  • Patent number: 6261500
    Abstract: A golf club shaft is made from sheets of carbon fibers in a thermoplastic matrix. A method and apparatus are also set forth for making a golf club shaft in a substantially voidless manner. An improvement in vibration dampening is obtained.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 17, 2001
    Assignee: Phoenixx TPC, Inc.
    Inventors: David B. Park, Laurent C. Bissonnette, Jerald A. Rolla
  • Patent number: 6246185
    Abstract: A high frequency arc lamp power supply (518) and display system (500). The power supply (518) drives an arc lamp (504) at a frequency high enough to several times higher than the display system's LSB frequency. By pulsing the lamp many times during each LSB period, the variations in light output during the pulses are all integrated in each bit period and do not degrade the quality of the image display. This eliminates the need for the controller (514) to synchronize the arc lamp power supply (518) with the spatial light modulator (502) when using pulse width modulation.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: June 12, 2001
    Assignee: Texas Instruments Incorporated
    Inventor: David B. Parks
  • Patent number: 6208535
    Abstract: A power supply (500) with vertical field effect transistor synchronous rectifiers (VFET1 and VFET2) having drivers (VFET Driver1 and VFET Driver2) which provide bipolar mode of operation by diode clamping an inductor overshoot which forwards biases the gate-source junction. The rectifiers have low on resistance useful in low output voltage power supplies.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 27, 2001
    Assignee: Texas Instruments Incorporated
    Inventor: David B. Parks
  • Patent number: 5589079
    Abstract: An assembly for recovering crystals from a slurry comprises a filtration unit including a rotatably mounted cylindrical filter, a slurry input for receiving slurry pressurized by a pump. The filtration unit has an outlet for discharging crystalline material separated from the slurry by the filtration unit. A first hopper connected to the filtration unit at the discharge outlet thereof is provided at a downstream side with a first valve unit which is in turn connected to a second hopper on a downstream side. A second valve unit is coupled to the second hopper at a downstream side thereof. Each of the valve units includes a rotatably mounted dome shaped valve member. The second hopper is provided with a vent extending to a gas storage tank. A conduit links the hoppers to one another for substantially equalizing pressure in the hoppers prior to an opening of the upstream valve during a discharge procedure.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: December 31, 1996
    Assignee: Baker Hughes Incorporated
    Inventors: David B. Park, Michael F. Crawley
  • Patent number: 5470473
    Abstract: An assembly for recovering crystals from a slurry comprises a filtration unit including a rotatably mounted cylindrical filter, a slurry input for receiving slurry pressurized by a pump. The filtration unit has an outlet for discharging crystalline material separated from the slurry by the filtration unit. A first hopper connected to the filtration unit at the discharge outlet thereof is provided at a downstream side with a first valve unit which is in turn connected to a second hopper on a downstream side. A second valve unit is coupled to the second hopper at a downstream side thereof. Each of the valve units includes a rotatably mounted dome shaped valve member. The second hopper is provided with a vent extending to a gas storage tank. A conduit links the hoppers to one another for substantially equalizing pressure in the hoppers prior to an opening of the upstream valve during a discharge procedure.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: November 28, 1995
    Assignee: Baker Hughes Incorporated
    Inventors: David B. Park, Michael F. Crawley
  • Patent number: 4640410
    Abstract: A conveyor installation comprises a framework having stationary guides with plastic contact surfaces. A conveyor belt is mounted for travel on the framework and includes plastic carriers mounted on plastic chain links. The carriers are supported for sliding contact with some of the guides which define vertical support rails. The carriers are connected to the links by socket and post connections with dowel pins extending therethrough. The conveyor belt carries plastic hold-down members which engage the stationary guides to prevent rising-up of the conveyor belt as the belt changes direction, the hold-down members being connected by socket/post connections. The carriers are of grid-like, air pervious construction and include U-shaped, downwardly curved projections at front and rear edges.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: February 3, 1987
    Inventors: Karl V. Palmaer, David B. Park
  • Patent number: 4613037
    Abstract: A longitudinally elongate conveyor belt is adapted for conveying a plurality of transversely spaced items. The belt comprises a plurality of interconnected, generally transversely extending rod members which are spaced apart along the longitudinal direction. Each rod member is upwardly arched to define first and second item-supporting segments. The first and second segments diverge in the downward direction so as to resist a tendency for the first and second items to be displaced by belt sag. An outer edge of the belt may be elevated relative to the inner edge to compensate for centrifugal forces.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: September 23, 1986
    Assignee: Stewart Systems, Inc.
    Inventors: David B. Park, John A. Weaver, A. Scott Zumbrum
  • Patent number: 4579218
    Abstract: A conveyor travels in a helical path and is driven by a plurality of drive sprockets which are mounted on a common drive shaft. Each drive sprocket includes a yieldable portion which moves relative to a ring gear of the sprocket when the conveyor encounters an unyielding resistance. A sensor is activated in response to relative movement of the yieldable portion of the sprocket to provide an indication of which drive sprocket has sensed the resistance to conveyor travel.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: April 1, 1986
    Assignee: David B. Park
    Inventors: David B. Park, Gerard J. McDonald, James Snyder
  • Patent number: 4576277
    Abstract: A conveyor installation comprises a framework having stationary guides with plastic contact surfaces. A conveyor belt is mounted for travel on the framework and includes plastic carriers mounted on plastic chain links. The carriers are supported for sliding contact with some of the guides which define vertical support rails. The carriers are connected to the links by upstanding coupling members. Plastic clip-on sleeves are mounted on the coupling members for engagement with some of the stationary guides to minimize wear of the chain, while assuring a low friction sliding contact between the chain and the guides. Snap-on pan guides are insertable into recesses of the carriers.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: March 18, 1986
    Assignee: David B. Park
    Inventors: David B. Park, James R. Snyder, Gerard J. McDonald, Roland Hoet
  • Patent number: 4540083
    Abstract: The unlatch assembly employs a reciprocating carriage to engage and pull a product-carrying mat entering into the ascending elevator away from the main conveyor. The carriage is reciprocated in a path under the elevator and disengages when the mat is fully within the elevator. The carriage drive employs a single chain to avoid skewing of the carriage.
    Type: Grant
    Filed: February 28, 1980
    Date of Patent: September 10, 1985
    Assignee: Santrade Ltd.
    Inventors: James R. Cowdery, David B. Park, Rouzas R. Khoylian
  • Patent number: 4503968
    Abstract: The relatch assembly employs a trackway of articulated sections which are reciprocated vertically while a carriage is reciprocally driven along the trackway sections to engage a carrier on the descending elevator. The articulated trackway sections permit engagement of a carrier and subsequent pulling of the carrier from the descending elevator. A ramp is also provided to act in synchronism with the trackway sections to support a carrier being pulled from the elevator. The carriage is cycled twice during the time one carrier is pulled from the elevator into relatching engagement with the main conveyor. During the second cycle, the trackway sections remain in a lowermost position.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: March 12, 1985
    Assignee: Santrade Ltd.
    Inventors: Rouzas R. Khoylian, James R. Cowdery, David B. Park
  • Patent number: 4324326
    Abstract: The discharge assembly includes a pivotally mounted transfer conveyor to receive a flexible carrier from a descending process elevator and a discharge conveyor for discharging the items on the carrier onto a take-off conveyor. The diameter of the nose roller of the discharge conveyor is made relatively small so as to reduce the gap to the take-off conveyor.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: April 13, 1982
    Assignee: Design + Process Engineering Inc.
    Inventors: Rouzas R. Khoylian, James R. Cowdery, David B. Park
  • Patent number: 4232779
    Abstract: The infeed and discharge assemblies are mechanically actuated by movement of the hook assemblies on the endless chains of the horizontal conveyor in order to sequentially direct the flexible carriers into and out of the respective vertical conveyors. Each of the infeed and discharge assemblies includes a pivotally mounted ramp assembly with a pair of latch assemblies at the ends for engaging an aligned pair of tracks in the respective vertical conveyors.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: November 11, 1980
    Assignee: Design & Process Engineering, Inc.
    Inventors: Rouzas R. Khoylian, James R. Cowdery, David B. Park