Patents Represented by Law Firm 1
  • Method and apparatus for infrared imaging in small passageways
    Patent number: 6735462
    Abstract: An infrared imaging system (10) includes a catheter (11). The catheter is inserted into a small passageway, such as a blood vein (23), in order to collect infrared information from the vein. The information is refracted by at least one lens (32, 46, 52, 57, 63) in a collecting section (17, 45, 56, 61) of the catheter, and is imaged onto the ends (38) of an array of optical fibers (34). The fibers transmit the information to a relay lens (42), which images the information onto respective detector elements of an infrared detector (12). The infrared detector converts the information received from the relay lens into electrical information, which is transmitted to a circuit (13). The circuit generates electrical data that is transmitted to a display (16), which displays a visible image based on the infrared radiation emitted by the scene.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: May 11, 2004
    Assignee: Raytheon Company
    Inventors: Paul Klocek, Douglas W. Anderson
  • Underwater navigation device
    Patent number: 5187871
    Abstract: A navigation device for personal use includes a face mask with a transparent window for binocular vision when the device is worn by the user. The face mask has a directional indicator attachement with a multiplicity of symbols to identify the directional orientation of the mask. The directional indicator is attached at a stable location and distance for continuous availability of direct binocular viewing.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: February 23, 1993
    Inventor: Damien McDermott
  • Impregnated diamond drill bit construction
    Patent number: 4274769
    Abstract: An impregnated diamond drill bit having a generally cylindrical, hollow crown structure with a lower portion containing diamond particles and a steel shank attached to the crown structure at its upper end. The diamond particles are dispersed within a metal matrix in the lower portion of the crown. Around both the outside circumferential wall and the inside circumferential wall of portions of the crown structure, there are layers of a highly wear resistant material. These layers are formed of a material that is more wear resistant than the material used for the metal matrix in which the diamond particles are dispersed.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: June 23, 1981
    Assignee: Acker Drill Company, Inc.
    Inventor: Leonid Multakh
  • Substituted 7,8-dihydro-6H-(1,2,5)thiadiazolo(3',4'-5,6)pyrazino(2,3-b)(1,4)oxazines
    Patent number: 4080499
    Abstract: Substituted 7,8-dihydro-6H-(1,2,5)thiadiazolo(3',4'-5,6)pyrazino(2,3-b)(1,4)oxazine compounds useful as herbicides or fungicides are disclosed.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: March 21, 1978
    Assignee: 1
    Inventor: Thomas J. Dietsche