Patents Represented by Attorney Donald J. Lisa
  • Patent number: 6290173
    Abstract: A bellows body is curved and formed with a plurality of convolutions to allow axial and lateral flexure of both ends of the bellows when connected between the engine exhaust stack and an airframe duct. The upper slotted end of the bellows fits over the stack nipple and is conventionally, fixedly sealingly secured thereto by an O-clamp. The outside diameter of the lower end forms a gas tight slip joint in the bore of the lower cowling heater duct flange. For added reinforcement an optional collar may be permanently fitted exteriorly and/or interiorly of the stack wall adjacent the stack nipple and an optional brace may be welded interiorly between the stack and scupper.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: September 18, 2001
    Assignee: Commuter Air Technology, Inc.
    Inventor: Norris K. Nickels
  • Patent number: 6241444
    Abstract: A forged, integral bolt (20) has a head, a tapered neck (22), a shank, and a plurality of plastically deformable, raised, contact surface portions (31) uniformly positioned adjacent the neck and extending axially and radially of the bolt for spreading a load applied to the bolt. Each raised portion has a base portion contiguous the neck, and an elongated, V-shaped, ridge portion raised above the base which is constructed to contact and fay with a congruent wall portion of a bolt bore (12) in a support structure. The bolt may have various shapes. (FIGS. 1-3, 10-23). The ridges may extend up onto the sides of the head. (FIG. 9). The ridge portions and base portions may be integrally forged as a pair of symmetrical, self-aligning, inserts (40) separate from, but mating with, opposite sides of the neck when a load is applied to the bolt.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: June 5, 2001
    Inventor: Ronald C. Clarke
  • Patent number: 6220802
    Abstract: A forged, integral bolt (20) has a head, a tapered neck (22), a shank, and a plurality of plastically deformable, raised, contact surface portions (31) uniformly positioned adjacent the neck and extending axially and radially of the bolt for spreading a load applied to the bolt. Each raised portion has a base portion contiguous the neck, and an elongated, V-shaped, ridge portion raised above the base which is constructed to contact and fay with a congruent wall portion of a bolt bore (12) in a support structure. The bolt may have various shapes. (FIGS. 1-3, 10-23). The ridges may extend up onto the sides of the head. (FIG. 9). The ridge portions and base portions may be integrally forged as a pair of symmetrical, self-aligning, inserts (40) separate from, but mating with, opposite sides of the neck when a load is applied to the bolt.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: April 24, 2001
    Inventor: Ronald C. Clarke
  • Patent number: 6204771
    Abstract: A fastener system employs a portable, sensing device, such as one or more reactance capacitors or an image processor such as a camera or a laser, which removably attaches adjacent to the fastener to detect and measure the change in a gap or specialized form of the bolt head or associated washer caused by the relative movement of portions of the fastener system when the fastener is under strain without contacting the sensed portions undergoing the significant relative movement. Associated electronic components process and indicate the clamp load of the fastener system.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: March 20, 2001
    Inventor: Stanley Ceney
  • Patent number: 6181719
    Abstract: A gas laser RF power supply has two RF oscillators operating at different frequencies, the first frequency to provide maximum RF voltage to the plasma tube prior to ignition, and the second frequency to provide optimum power for sustaining CW or pulse operation of the laser. The oscillator outputs are modulated to control power to the tube, the one in the form of RF pulses at the first frequency and at a power level below the laser emission threshold, and the other in CW or pulse form at the second frequency at a laser gas medium excitation level above the laser emission threshold. The first frequency is the resonance frequency of the tube prior to plasma ignition and the frequency of minimum average RF power required for a reliable ignition. The second frequency is the most efficient operating frequency for the plasma ignited and kept ionized by the pulses of the first frequency and provides maximum output laser power.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: January 30, 2001
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Mikhail E. Ryskin, David W. Schultz, George M. Mavroleon
  • Patent number: 6097707
    Abstract: A single channel wireless digital communication network [10] has a cellular topology which includes a central unit [12] ("CW") controlling communications with a plurality of remote units [14] ("TU") in a star configuration. Network access is synchronously controlled through a time division multiplexed cycle [20] of variable total duration having an up-link phase [21] of a variable number of fixed size time slots [25, 27, 27a], each pre-assigned by reservation by a remote unit, and a down-link phase [22] of a variable number of variable size slots [31a, 31b] which are adaptively utilized. The CU adaptively manages all slot assignments according to a variety of parameters. RU up-link slot reservations are confirmed by the CU in a variety of ways. During the up-link phase, RU's which did not reserve a slot on the previous up-link cycle are temporarily suspended and are then polled or periodically tested for re-entry.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: August 1, 2000
    Inventors: Migdat I. Hodzic, James M. Brennan
  • Patent number: 6048150
    Abstract: A forged, integral bolt (20) has a head, a tapered neck (22), a shank, and a plurality of plastically deformable, raised, contact surface portions (31) uniformly positioned adjacent the neck and extending axially and radially of the bolt for spreading a load applied to the bolt. Each raised portion has a base portion contiguous the neck, and an elongated, V-shaped, ridge portion raised above the base which is constructed to contact and fay with a congruent wall portion of a bolt bore (12) in a support structure. The bolt may have various shapes. (FIGS. 1-3, 10-23). The ridges may extend up onto the sides of the head. (FIG. 9). The ridge portions and base portions may be integrally forged as a pair of symmetrical, self-aligning, inserts (40) separate from, but mating with, opposite sides of the neck when a load is applied to the bolt.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: April 11, 2000
    Inventor: Ronald C. Clarke
  • Patent number: 5982803
    Abstract: A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (a) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (b) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing without disturbing the uniform distribution of forces on the electrodes.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: November 9, 1999
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Mikhail E. Ryskin, Christian Julian Risser
  • Patent number: 5901167
    Abstract: A gas laser design (10) includes, an elongated sealed tube (21) filled with a gas, a power supply for exciting the gas, an optical resonator (24,25) for producing directional optical energy, and a fan/electronics package assembly (50), all of which are surrounded and enclosed by an external housing (30,70,90) forming a passageway in the space between the tube and the housing for providing cooling air therethrough. The passageway is divided into two physically separated cooling air paths by a horizontal surface (21a or 41). The lower space is a dual L-shaped path defining the first cooling air path downwardly at the inlet end of the tube in the vertical air channels (31,32) formed by the contoured shape of the tube and rearwardly (33) through the spaces (27,29) between the horizontal fins (26,28) of the tube to an outlet (101) at the rear of the tube.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: May 4, 1999
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Christian Julian Risser, Mikhail E. Ryskin
  • Patent number: 5894493
    Abstract: A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (A) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (B) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing without disturbing the uniform distribution of forces on the electrodes.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: April 13, 1999
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Mikhail E. Ryskin, Christian Julian Risser
  • Patent number: 5881087
    Abstract: An extruded aluminum gas laser tube assembly (10) has a pair of extruded, elongated, electrically insulated, aluminum electrodes (23,24) adapted to couple to an external RF supply and supported in the laser tube in predetermined spaced-apart relationship relative to each other and to the laser tube (11). The electrode supporting structure is eight pairs of matching, longitudinal, machined grooves (12,21), four pairs at each end of the tube (11) and electrodes (23,24) in each of which pairs is received a cylindrical, insulated, anodized aluminum spacer pin (22) which slidably supports the electrodes in the tube and allows longitudinal expansion of the electrodes relative to the tube substantially without bending.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: March 9, 1999
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Christian Julian Risser, Mikhail E. Ryskin
  • Patent number: 5867517
    Abstract: A sealed gas laser tube (10) has a pair of electrically insulated electrodes (53, 54) supported in the tube (11) adapted to couple to an external RF supply (30).
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: February 2, 1999
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Christian Julian Risser
  • Patent number: 5820266
    Abstract: A travelling thermocouple dynamically profiles the actual temperature of a substrate passing through a vertical oven without entangling the thermocouple wires. Media components, such as microprocessor chips in a semiconductor wafer, are supported on a tray or plate on a driven conveyor. A thermocouple formed of two metal wires of extended length are connected at one end to the media component and at the other end to a stationary readout device and function as the temperature gauge for all trays of components passing through the oven. A C-shaped clamp or hook secured to the thermocouple wires resiliently engages a chain drive driven independently of the conveyor drive but in correlation therewith by a computer controller and pulls the wires through the oven keeping pace with the media component to which it is attached.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: October 13, 1998
    Inventor: Tibor J. Fedak
  • Patent number: 5754575
    Abstract: A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (a) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (b) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing without disturbing the uniform distribution of forces on the electrodes.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: May 19, 1998
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Mikhail E. Ryskin, Christian Julian Risser
  • Patent number: 5729640
    Abstract: A portable scatterometer and/or an angular radiated light measurement instrument that uses a measurement head which includes a double tapered fiber optic bundle with a concave front face to simultaneously collect partial or full hemispherically scattered light reflected from a point on a surface illuminated by a depolarized, telescopically focused, laser diode source, the light rays being received by each fiber normal to its face. The image of the collected light beams is minified and coupled by the fiber optic bundle into an anti-blooming CID camera with an x-y scanning area array which converts the light beams to electrical signals. In a unique real time, computer-controlled, data acquisition and reconstruction process, a frame grabber a unique algorithm are used to collect over 200,000 points of light reconstruct the data into a 2D or 3D scatter profile and display the results, all within one second. Multiple embodiments of the tapered fiber optic bundle collector are disclosed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 17, 1998
    Assignee: Breault Research Organization
    Inventor: Raymond Joseph Castonguay
  • Patent number: 5678790
    Abstract: A utensil rest has an upwardly extending cradle for holding a utensil by gravity, an elongated vertical rib supporting the cradle and having one end taller than the other end, and a, spring clip depending from the short end of the rib having a pair of spaced, inturned prongs with outturned ends. The prongs easily snap onto and grasp the handle of a receptacle or cooking vessel mounting the rest thereon, positioning the tall end of the rib near the vessel rim and fulcruming the bottom of the tall end against the top surface of the handle for holding the working end of the utensil generally horizontally over the open vessel. In one mode, a transverse ridge at the inboard end of the cradle vertically supports the inboard end of the utensil. The rest is molded integrally of nylon.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: October 21, 1997
    Inventor: Robert R. Dwyer
  • Patent number: 5661746
    Abstract: A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (a) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (b) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing Without disturbing the uniform distribution of forces on the electrodes.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: August 26, 1997
    Assignee: Universal Laser Syatems, Inc.
    Inventors: Yefim P. Sukhman, Mikhail E. Ryskin, Christian Julian Risser
  • Patent number: 5649679
    Abstract: The present invention relates to a protective cover for an airplane nose-wheel fairing. The protective cover prevents a nose-wheel fairing from becoming cracked or scratched as an airplane tow bar is attached or removed from the nose-wheel strut.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: July 22, 1997
    Inventor: Mark Perkins
  • Patent number: 5650705
    Abstract: A motor control system (10) for controlling a multiple number of motors, each motor having a multiple number of phases. System (10) can be used to dynamically vary the step sizes from microsteps to full steps (i.e. "syncro-stepping the motor").
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: July 22, 1997
    Inventor: John Roger Hart
  • Patent number: 5640246
    Abstract: A portable scatterometer and/or an angular radiated light measurement instrument that uses a measurement head which includes a double tapered fiber optic bundle with a concave front face to simultaneously collect partial or full hemispherically scattered light reflected from a point on a surface illuminated by a depolarized, telescopically focused, laser diode source, the light rays being received by each fiber normal to its face. The image of the collected light beams is minified and coupled by the fiber optic bundle into an anti-blooming CID camera with an x-y scanning area array which converts the light beams to electrical signals. In a unique real time, computer-controlled, data acquisition and reconstruction process, a frame grabber and a unique algorithm are used to collect over 200,000 points of light, reconstruct the data into a 2D or 3D scatter profile and display the results, all within one second.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 17, 1997
    Assignee: Breault Research Organization
    Inventor: Raymond Joseph Castonguay