Patents Assigned to Par Technologies
  • Publication number: 20060131530
    Abstract: Thin chamber diaphragm-operated fluid handling devices, including thin chamber pumps and thin chamber valves, facilitate device compactness and, in some configurations, self-priming. Diaphragm actuators of the thin chamber devices either comprise or are driven by piezoelectric materials. The thinness of the chamber, in a direction parallel to diaphragm movement, is in some embodiments determined by the size of a perimeter seal member which sits on a floor of a device cavity, and upon which a perimeter (e.g. circumferential or peripheral portion) of the diaphragm actuator sits. The diaphragm actuator is typically retained in a device body between the floor seal member and another seal member between which the perimeter of the actuator is sandwiched. The devices have an input port and an output port.
    Type: Application
    Filed: January 19, 2006
    Publication date: June 22, 2006
    Applicant: PAR Technologies, LLC
    Inventor: W. East
  • Publication number: 20050280334
    Abstract: A piezoelectric power generator (20, 120) comprises plural piezoelectric devices (22, 122); an actuator (24) positioned to impart an excitation to the plural piezoelectric devices (22, 122) in a predefined sequence; and, an electrical conduction system (30) connected to the plural piezoelectric devices for conducting an electrical charge created by the excitation. Preferably the plural piezoelectric devices (22, 122) are arranged in a predetermined relationship relative to the actuator (24) whereby only one of the plural piezoelectric devices (22, 122) is actuated at a time. For example, the plural piezoelectric devices (22, 122) can be arranged in an angular pattern (such as a circular pattern) relative to the actuator (24). Preferably, a rotational speed of the actuator (24) permits an excitation response for a given plural piezoelectric device (22, 122) to essentially fully decay before the given plural piezoelectric device (22, 122) is again excited.
    Type: Application
    Filed: June 17, 2004
    Publication date: December 22, 2005
    Applicant: PAR Technologies, LLC
    Inventors: William Ott, Edward Tanner
  • Publication number: 20050224212
    Abstract: A heat sink (20) comprises a heat sink monolith (23) and a cover (22). The heat sink monolith (23) comprises a thermal transfer plate (25) and a wire mesh structure (26). The thermal transfer plate (25) of the monolith (23) and the cover (22) cooperate to define a heat transfer chamber (24). The wire mesh structure (26) of the monolith (23) is configured and positioned in the chamber (24) to provide a tortuous, heat conduction path for fluid (e.g., a coolant) which turbulently travels from an inlet (40) of the chamber to one or more outlets (42) of the chamber (24). The wire mesh structure comprises wires which are fused by diffusion bonding (rather than by soldering) into a mesh. The diffusion bonding of the wires provides the wire mesh structure with many and appropriately sized interstices, making it easier to push the fluid through the heat sink assembly and thereby significantly reducing the size and power of the pump which pushes the fluid.
    Type: Application
    Filed: April 2, 2004
    Publication date: October 13, 2005
    Applicant: PAR Technologies, LLC
    Inventor: W. East
  • Patent number: 6849814
    Abstract: A gravity-type sensor device comprising a switch which monitors the position of an object over a three dimensional pathway which extends dimensionally about all three orthogonal axes where the object may be tilted, rotated or inverted, as well as translated through space rather than maintained at a fixed location, so as to provide a signal to indicate that the object is moving in the correct three dimensional manner, whereby the switch is disposed within an external housing in a manner that allows the position of the switch to be altered relative to the housing, thereby allowing the angle or plane of the pathway to be adjusted when the housing is attached to different objects.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: February 1, 2005
    Assignee: PAR Technology, Inc.
    Inventor: Everett Ogden
  • Patent number: 6603084
    Abstract: A gravity responsive attitude switch containing electrical contacts separated by a gap, the switch containing a bead liquid and a carrier liquid, the two liquids being immiscible and having different electric resistivity values, where the liquid bead may be disposed between the contacts by properly positioning the switch. The contacts are connected in an electronic circuit which senses the difference in resistivity dependent on whether the bead liquid or the carrier liquid is bridging the gap between the contacts, which in turn determines whether an operative electric circuit is opened or closed.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: August 5, 2003
    Assignee: Par Technology, Inc.
    Inventor: Everett Ogden
  • Patent number: 6281456
    Abstract: A three-axis gravity switch having a curved chamber to retain a gravity responsive member such as a ball of liquid mercury, the chamber having a three-dimensional pathway defined on at least one of its walls, where the gravity responsive member and pathway are conductive, either electrically or optically, such that a circuit is completed when the gravity responsive member contacts the pathway, where the switch can be rotated, inverted and translated in three dimensions such that the pathway defines an acceptable three dimensional course of rotation for the switch.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: August 28, 2001
    Assignee: Par Technology, Inc.
    Inventor: Everett Ogden
  • Patent number: 5159361
    Abstract: A system, method, and apparatus for obtaining the corneal topography of an object using computer analyzed rasterstereographic images. The object may be nontransparent and diffusing, or it may be transparent and nondiffusing, such as a cornea. Rasterstereographic images of a cornea are produced by staining the cornea with a fluorescein solution which projects a light and dark line pattern onto the cornea through a grid. When obtaining the topography of a cornea, several different filters are used for producing and obtaining a grid image. An image processor uses unique software to store and analyze data extracted from the grid pattern. A video camera, an illuminator, the filters, and the grid may be mounted on a microscope. One embodiment uses a grid with vertical lines. Another embodiment uses a grid having intersecting horizontal and vertical lines for exhibiting surface details in a two-dimensional x-y plane.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: October 27, 1992
    Assignee: Par Technology Corporation
    Inventors: James L. Cambier, Salvins J. Strods
  • Patent number: 4995716
    Abstract: A system, method, and apparatus for obtaining the corneal topography of an object using computer analyzed rasterstereographic images. The object may be nontransparent and diffusing, or it may be transparent and nondiffusing, such as a cornea. Rasterstereographic images of a cornea are produced by staining the cornea with a fluorescein solution which projects a light and dark line pattern onto the cornea through a grid. When obtaining the topography of a cornea, several different filters are used for producing and obtaining a grid image. An image processor uses unique software to store and analyze data extracted from the grid pattern. A video camera, an illuminator, the filters, and the grid may be mounted on a microscope.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: February 26, 1991
    Assignee: Par Technology Corporation
    Inventors: Joseph W. Warnicki, Paul G. Rehkopf, James L. Cambier, Salvins J. Strods
  • Patent number: D312076
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: November 13, 1990
    Assignee: PAR Technology Corporation
    Inventors: Phillip Miller, Darald R. Schultz, George E. Hanson
  • Patent number: D348654
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: July 12, 1994
    Assignee: PAR Technology Corporation
    Inventors: James D. Branck, Brian D. Johnson