Patents by Inventor David B. Wallace

David B. Wallace 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).

  • Publication number: 20200214725
    Abstract: An orthopaedic surgical instrument includes a patella trial and drill guide that may be used to both perform a surgical trial of the patellofemoral joint and guide the surgeon in drilling a number of anchor holes in the patella of the patient.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 9, 2020
    Inventors: Matthew S. Wallace, Jennifer B. Wyant, Richard S. Jones, David S. Barrett, Michael J. Rock, Abraham P. Wright, Olen J. Borkholder, Robert S. Gorab, Rusty T. Meier
  • Patent number: 7228199
    Abstract: A system and method for remote monitoring of material storage levels for dry bulk goods, wherein an independent entity, such as a transportation carrier, can continuously monitor raw material supply levels at a remote manufacturing plant, and, based on projected usage rates, place timely orders on behalf of the plant, with preselected vendors, to replenish depleted raw materials. The transportation carrier can then coordinate material shipments from the vendor to the manufacturing site using its own trucks. In this manner, the task of maintaining sufficient on site raw material storage levels is completely removed from the manufacturing plant.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: June 5, 2007
    Assignee: J.P. Donmoyer, Inc
    Inventor: David B. Wallace
  • Patent number: 7092897
    Abstract: A system and method for remote monitoring of material storage levels for dry bulk goods, wherein an independent entity, such as a transportation carrier, can continuously monitor raw material supply levels at a remote manufacturing plant, and, based on projected usage rates, place timely orders on behalf of the plant, with preselected vendors, to replenish depleted raw materials. The transportation carrier can then coordinate material shipments from the vendor to the manufacturing site using its own trucks. In this manner, the task of maintaining sufficient on site raw material storage levels is completely removed form the manufacturing plant.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: August 15, 2006
    Assignee: J.P. Donmoyer, Inc.
    Inventor: David B. Wallace
  • Patent number: 6672129
    Abstract: A method and apparatus is disclosed which employs a pulse-controlled microdroplet fluid delivery system for precisely dispensing fragrances and other odor producing vapors. The pulse-controlled fluid delivery device is capable of ejecting microdroplets of fluid with a diameter less than 350 micrometers at a controlled ejection rate based upon inkjet printing technology. The pulse-controlled fluid delivery system includes mechanisms for vaporizing the fluids and delivery of the vapors to the nose, which is controlled by a programmable system controller capable of real time data-driven dispensing with a multi-fluid capability. Synthesis of custom fragrances is made possible by a multijet programmed control system which adjusts dispensing rates of components. Calibration of a prior art “electronic nose” is disclosed. A precise calibration gas is produced in real-time to counteract the effect of drifting.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: January 6, 2004
    Assignee: MicroFab Technologies, Inc.
    Inventors: Christopher J. Frederickson, Donald J. Hayes, David B. Wallace, David W. Taylor, Matthew D. Hayes
  • Patent number: 6620283
    Abstract: A method for making a laminated carrier film for use in releasing interstitial fluid from skin for collection or measurement includes providing a printhead having an orifice and a reservoir containing a meltable absorber substance, the printhead being capable in response to electrical signals, to eject droplets of said meltable absorber substance from the orifice; supporting a carrier film having a series of spaced apart openings for a meltable absorber substance on a support base, in close proximity to the printhead, whereby the spaced apart openings on the carrier film can be positioned relative to the orifice to receive absorber substance droplets ejected from the printhead; filling the spaced apart openings of the carrier film with meltable absorber substance ejected from the printhead; and covering the carrier film on one side with a clear polymer film strip selected to allow laser energy to pass through the clear polymer film in order to reach the meltable absorber substance inside the openings.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: September 16, 2003
    Assignee: MicroFab Technologies, Inc.
    Inventors: Donald J. Hayes, David W. Taylor, David B. Wallace
  • Publication number: 20020127014
    Abstract: A fluid dispensing apparatus, for use in fluid dispensing systems for the controlled application, metering, and/or dispensing of fluid from a plurality of orifices. The apparatus comprises a body having at least one cavity, at least one fluid inlet for introducing the fluid into the cavity, and at least one fluid outlet for discharging the fluid from the cavity. A plurality of orifices are in communication with the fluid outlet and at least one piezoelectric actuator is selectively coupled to the body and operable to pressurize the fluid within the cavity and permit the controlled discharge of the fluid through the plurality of orifices onto a substrate.
    Type: Application
    Filed: November 30, 2000
    Publication date: September 12, 2002
    Inventor: David B. Wallace
  • Publication number: 20020082735
    Abstract: A system and method for remote monitoring of material storage levels for dry bulk goods, wherein an independent entity, such as a transportation carrier, can continuously monitor raw material supply levels at a remote manufacturing plant, and, based on projected usage rates, place timely orders on behalf of the plant, with preselected vendors, to replenish depleted raw materials. The transportation carrier can then coordinate material shipments from the vendor to the manufacturing site using its own trucks. In this manner, the task of maintaining sufficient on site raw material storage levels is completely removed from the manufacturing plant.
    Type: Application
    Filed: February 28, 2002
    Publication date: June 27, 2002
    Inventor: David B. Wallace
  • Patent number: 6390453
    Abstract: A method and apparatus is disclosed which employs a pulse-controlled microdroplet fluid delivery system for precisely dispensing fragrances and other odor producing vapors. The pulse-controlled fluid delivery device is capable of ejecting microdroplets of fluid with a diameter less than 350 micrometers at a controlled ejection rate based upon ink-jet printing technology. The pulse-controlled fluid delivery system includes mechanisms for vaporizing the fluids and delivery of the vapors to the nose, which is controlled by a programmable system controller capable of real time data-driven dispensing with a multi-fluid capability. Synthesis of custom fragrances is made possible by a multijet programmed control system which adjusts dispensing rates of components. Calibration of a prior art “electronic nose” is disclosed. A precise calibration gas is produced in real-time to counteract the effect of drifting.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 21, 2002
    Assignee: MicroFab Technologies, Inc.
    Inventors: Christopher J. Frederickson, Donald J. Hayes, David B. Wallace, David W. Taylor, Matthew D. Hayes
  • Patent number: 6366829
    Abstract: A system and method for remote monitoring of material storage levels for dry bulk goods, wherein an independent entity, such as a transportation carrier, can continuously monitor raw material supply levels at a remote manufacturing plant, and, based on projected usage rates, place timely orders on behalf of the plant, with preselected vendors, to replenish depleted raw materials. The transportation carrier can then coordinate material shipments from the vendor to the manufacturing site using its own trucks. In this manner, the task of maintaining sufficient on site raw material storage levels is completely removed from the manufacturing plant.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: April 2, 2002
    Assignee: J. P. Donmoyer, Inc.
    Inventor: David B. Wallace
  • Patent number: 6338715
    Abstract: A more reliable and precise method of determining the olfactory threshold is provided by a digitally operated apparatus that dispenses controlled amounts of a volatile test fluid from a digital jetting device of the type used for ink jet printing. A precise number and size of micro droplets are dispensed onto a heater which vaporizes the fluid at a test location where a patient can sniff and report whether the odor is sensed. Incremental adjustments are made to determine the approximate threshold of olfactory perception of the odor. Sensors are included to verify dispensing and to coordinate dispensing with breathing.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: January 15, 2002
    Assignee: MicroFab Technologies, Inc.
    Inventors: Donald J. Hayes, Ioan Achiriloaie, David W. Taylor, Norman Comparini, David B. Wallace
  • Patent number: 6334980
    Abstract: Miniaturized, self-contained apparatus for conducting bio-chemical reactions and analyses is formed in a compact structure comprising a substrate which includes a plurality of reaction chambers and a plurality of analysis chambers which are in fluid communication with the reaction chambers. Independently controllable heaters and coolers are positioned in thermal contact with the reaction chambers to permit parallel processing of biological samples at different temperature cycles. The apparatus is especially useful for performing and analyzing the results of a polymerase chain reaction.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: January 1, 2002
    Assignee: Microfab Technologies Inc.
    Inventors: Donald J. Hayes, David B. Wallace, Christopher J. Frederickson
  • Patent number: 6334851
    Abstract: A carrier film has one or more openings or wells loaded with a meltable absorbing substance for absorbing laser energy. The carrier film has a clear film which covers one side of the opening containing the absorber substance and the open side of the opening in the carrier film is positioned adjacent to the skin and irradiated through the clear cover film by a laser beam. The melted laser energy absorbing substance is ejected to form a spot laying on the skin. After moving the carrier film, a laser beam impinges the spot thereby raising a tiny blister on the skin containing interstitial fluid. The interstitial fluid is collected for diagnosis and analysis. A method of making and loading the carrier film with a digitally operated dispenser of the type used for ink jet printing is disclosed. Special construction of the opening appears to enhance ejection.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: January 1, 2002
    Assignee: MicroFab Technologies, Inc.
    Inventors: Donald J. Hayes, David W. Taylor, David B. Wallace
  • Patent number: 6325475
    Abstract: An ink-jet dispenser for the micro-dispensation of airborne materials into an individual's airspace for inhalation or sniffing. The ink-jet dispenser will allow the study of temporal integration times, inter-nostril summation, backwards and forwards masking, and other olfactory phenomena.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: December 4, 2001
    Assignee: Microfab Technologies Inc.
    Inventors: Donald J. Hayes, Christopher J. Frederickson, David B. Wallace
  • Patent number: 6170930
    Abstract: A method of producing, on a physical medium, a gradient tonal representation of an image and a printhead for producing the same. An input image is divided into first and second regions. First, continuously variable intensity level, continuous tone and second, discretely variable intensity level, half-tone portions of the representation which respectively correspond to the first and second regions of the image are then printed by depositing selected quantities of ink on the first and second portions of the physical medium such that each pixel thereof has an ink intensity level corresponding to the image intensity level for the corresponding one of the pixels of the first region of the image.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: January 9, 2001
    Assignee: Compaq Computer Corporation
    Inventor: David B. Wallace
  • Patent number: 6029896
    Abstract: The present invention uses a novel waveform to allow the droplet volume dispensed from a demand mode inkjet type device to be increased and selected according to easily controllable parameters. The current invention departs from the conventional drive method by significantly increasing the time for energy input in the initial instance as well is in all later application of the drive voltage to the device. In shape, the waveform is the same whether a unipolar or bipolar pulse is utilized; however, the transition times in the initial instance are up to three times the acoustic resonance and the delay times are of the same order. Droplet diameter can be varied from 1X the orifice diameter to 2X the orifice diameter resulting in an 8:1 range of droplet volume. Since the volume modulation results from changes in the waveform used to drive the solder jet device, the drop volume can be changed and altered in real time.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: February 29, 2000
    Assignee: MicroFab Technologies, Inc.
    Inventors: Roger G. Self, David B. Wallace
  • Patent number: 5849208
    Abstract: Miniaturized, self-contained apparatus for conducting bio-chemical reactions and analyses is formed in a compact structure made from a substrate which includes a plurality of reaction chambers and a plurality of analysis chambers which are in fluid communication with the reaction chambers. Independently controllable heaters and coolers are positioned in thermal contact with the reaction chambers to permit parallel processing of biological samples at different temperature cycles. The apparatus is especially useful for performing and analyzing the results of a polymerase chain reaction.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: December 15, 1998
    Assignee: MicroFab Technoologies, Inc.
    Inventors: Donald J. Hayes, David B. Wallace, Christopher J. Frederickson
  • Patent number: 5772106
    Abstract: A compact printhead assembly is designed for employment in a soldering operation without the need for fluxes and without conducting the operation in a confined chamber. A self-contained printhead assembly has an internal reservoir and internal heating elements for raising the temperature above the melting temperature of solder or other liquid to be dispensed in microdroplets from a working surface at one end of the printhead housing. A jetting device containing an electro-mechanical transducer is pulsed to produced droplets at an exit orifice located at the working surface. Inert gas is preheated by the housing and delivered to the working surface to establish an oxygen-free atmosphere around the exit orifice and between the working surface and a substrate located a working distance away, whereby microdrops can be formed and deposited without harmful oxidation.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: June 30, 1998
    Assignee: MicroFab Technologies, Inc.
    Inventors: Scott D. Ayers, Donald J. Hayes, Michael T. Boldman, David B. Wallace
  • Patent number: 5736314
    Abstract: Thermo-cycling for biological material is provided by a channel such as a capillary tube extending through a series of temperature control elements. Each temperature control element maintains the adjacent portion of the channel at a desired temperature. Fluid to be processed is introduced into the tube through the inlet and flows, preferably through capillary action, to the outlet. The temperature of the fluid changes as it passes each temperature control element and is thus thermo-cycled through a predetermined sequence of temperatures.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: April 7, 1998
    Assignee: MicroFab Technologies, Inc.
    Inventors: Donald J. Hayes, David B. Wallace, Christopher J. Frederickson
  • Patent number: 5721123
    Abstract: Biological material is cycled through a sequence of temperatures by containing the material in a vessel positioned in a chamber maintained at a temperature which is no higher than the lowest temperature in a predetermined temperature sequence. The vessel is then irradiated with varying levels of electromagnetic radiation to heat the material and cycle it through a sequence of predetermined temperatures.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: February 24, 1998
    Assignee: MicroFab Technology, Inc.
    Inventors: Donald J. Hayes, David B. Wallace, Christopher J. Frederickson
  • Patent number: 5658802
    Abstract: Arrays of electro-mechanical dispensers are used to form extremely small drops of fluid and locate them precisely on substrate surfaces in miniature arrays. The printed arrays may consist of DNA, immunoassay reagents or the like. A positioning support such as an X-Y table moves the dispensing devices and substrate surfaces relative to each other to locate the drops on the substrates in predetermined patterns. Arrays of probes as dense as one thousand per square centimeter with center-to-center spacing as small as twenty-five micrometers are formed.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: August 19, 1997
    Assignee: MicroFab Technologies, Inc.
    Inventors: Donald J. Hayes, David B. Wallace, Christopher J. Frederickson