Patents Represented by Attorney Francis L. Masselle
  • Patent number: 5024549
    Abstract: Permanent joinder of structural components is accomplished by means of a heat retractable member connected between them by mechanically interlockable elements and raising the temperature of the member to a value sufficient to cause retraction thereof.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: June 18, 1991
    Assignee: MRJ Group, Inc.
    Inventor: James F. Dalby
  • Patent number: 4874250
    Abstract: The automatic serial testing of the heats of transformation of material samples is accomplished. The samples are enclosed in capsules which are placed into sample carriers on a turntable. A transfer mechanism transfers the capsules from the turntable to a controllably heatable test sample receiver and, after the measurement, back to the turntable. The entire arrangement is located in a housing filled with nitrogen. The sample carriers with the capsules can be inserted into this housing and onto the turntable through an air lock.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: October 17, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventor: Winfried Gonner
  • Patent number: 4834536
    Abstract: Electrical contact members 20, 22 for supplying transverse electrical current to a tubular furnace member (22) for electrothermal atomization of samples for analysis by atomic absorption spectrophotometry, the tubular furnace member having diametrically opposite, longitudinally-extending contact ribs (84, 86). The contact members (20, 22) form, in operative assembly, a cavity 88 in which tubular furnace member (24) is accommodated and is held between V-shaped channels (44, 76) in contact members (20, 22). Cavity 88 is formed by a recess (36) in one contact member (20) and covered, except for a separating gap, by the other contact member (22). Respective inert protective gas passages (62, 82) terminate at one end in channels 44, 76.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: May 30, 1989
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventors: Rolf Tamm, Gerhard Christian
  • Patent number: 4818838
    Abstract: Disclosed is a particle beam lithography system (10) having a workpiece loading/unloading position to one side of a particle beam (32) and beam column (12) where a workpiece (14), to be processed, is placed in a vacuum chuck (100) to eliminate any irregularity or warpage of the workpiece (14). At this same position, the workpiece (14) is oriented and fixed at a preselected distance from a standard by gap setting means (162, 162b). This distance correlates with a preselected gap (G) between a seal apparatus (16) and the workpiece (14) during workpiece processing. The workpiece (14) and chuck (100) are then moved beneath the seal apparatus (16) and beam column (12) for workpiece processing. After processing, the workpiece (14) and chuck (100) are returned to the loading/unloading position to be removed from the lithography system (10).
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: April 4, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventors: Lydia J. Young, Lee H. Veneklasen
  • Patent number: 4818489
    Abstract: A pocket instrument for sampling breath air in situ, includes a microprocessor-controlled directional control valve with needles at an outlet to which needle the sample vessels are attached. The directional control valve is arranged to be connected through another outlet to the atmosphere and to a collecting chamber respectively, which collecting chamber is provided with a feeding device for accommodating and delivering the breath air.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: April 4, 1989
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventors: Winfried Gonner, Bruno Kolb, Gottfried Machata
  • Patent number: 4816123
    Abstract: The basic concept of this invention involves the use of a wire or capillary tube as a template strand. The outside diameter and shape of the template strand correspond to the inside diameter and shape of a desired separation capillary. A detector may be incorporated by providing a pair of electrode wires, or the ends of a pair of optical fibers, and pressing them against opposite sides of the template. As plastic is then polymerized around this asssembly by casting or molding. The template is then removed, leaving a capillary channel with a sidewall incorporating the wire electrodes and optical fibers. Using this method, it is possible to form a single unit including a separation capillary, conductivity detector, and spectroscopy detector.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: March 28, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventors: Kenneth Ogan, Frans M. Everaerts, Theo P. E. M. Verheggen
  • Patent number: 4813267
    Abstract: A thermal conductivity cell is described whose elements are well protected against short term temperature fluctuations, changes in flow rates, leaks, and vapor pressures of construction materials. The sample and reference chambers are formed within a relatively large copper block with a controlled thermal time constant. The thermal elements are isolated from the gas flow paths by porous metal plugs which are thermally "clamped" to the block. Element feed-throughs are potted in thermally conductive epoxy to minimize the effect of temperature gradients.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: March 21, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventors: Stanley D. Norem, Henry W. Bullinger
  • Patent number: 4803051
    Abstract: An atomic spectrometer in combination with an atomizer apparatus for atomizing a test sample into an atomic state for analysis in the atomic spectrometer. The atomizer apparatus includes a heater for heating a sample to free individual atoms of the sample for atomic spectroscopy, a tube member containing a packing of an adsorbent, a reagent adsorbed on the adsorbent which reacts with a metal constituent in a sample to form a metal complex which adsorbs to the adsorbent at a first temperature and is volatile at a second higher temperature for desorption from the adsorbent, and a heater for heating the tube member.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: February 7, 1989
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventor: Gunter Knapp
  • Patent number: 4798464
    Abstract: The advantage of sustained wavelength accuracy and mechanical simplicity of a spectrophotometer using a photodiode array as photometric detector and a fixed diffraction grating as dispersion means may be limited to a relatively short wavelength range by problems of stray light, second order errors and overloading of the detector at portions of the wavelength range. By utilizing repeat scanning of the array, each scan being modified by using a different source lamp and correction filters, freedom from the cited problems over part of each scanned wavelength range can be effected. A computer controls the scan sequence and combines the usable portion of each scan to produce error free operation over an extended range.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: January 17, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventor: Roy E. Boostrom
  • Patent number: 4797609
    Abstract: An apparatus and method for monitoring the light intensity of individual light emitting diodes in an array of light emitting diodes. Means are provided to measure current flow through an unenergized diode adjacent to an energized diode. Current flow through the unenergized diode is porportional to light intensity of the light emitted by its energized adjacent diode.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: January 10, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventor: J. Leon Yang
  • Patent number: 4792688
    Abstract: A differentially pumped seal apparatus (14) comprising a rough port nozzle (R), a medium port nozzle (M) and a high port nozzle (H), each with a centrally located sleeve (34,36,40) defining concentric apertures (44,48,52). Each nozzle is configured as a sector of a circular cylinder which provides for large channels (62, 72, 76) to be formed for connecting the sleeve apertures (44,48,52) of each nozzle directly to vacuum pumps (46,50,54) to thereby provide a graded seal with high conductance and increased pumping efficiencies, higher vacuum and a smaller gap between the sleeve (34,36,40) and a workpiece (12).
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: December 20, 1988
    Assignee: The Perkin-Elmer Corporation
    Inventor: Lydia J. Young
  • Patent number: 4788431
    Abstract: A specimen distance measuring system uses a plate (36) to obstruct the flux of backscattered electrons produced by an electron beam (18), and to cast a shadow across a measurement detector (32) which is sensitive to the position of the shadow. The shadow plate (36) and measurement detector (32) are aligned at an angle of approximately 45 degrees with a substrate (14) in order to allow calibration of the distance measuring system by scanning the electron beam (18). The measuring system is particularly useful as a height sensor (10) in an electron beam lithography apparatus (12) for sensing the height of a substrate (14). The distance measuring system may also include a reference detector (34) which is positioned in order to receive backscattered electron flux without obstruction from the shadow plate (36).
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: November 29, 1988
    Assignee: The Perkin-Elmer Corporation
    Inventors: William A. Eckes, Lee Veneklasen, Glen E. Howard, Donald J. McCarthy, Allen M. Carroll, Daniel L. Cavan
  • Patent number: 4787745
    Abstract: A conjugate interferometer includes a first interferometer and a second interferometer arranged so that the common optical element thereof is the respective translating mirrors of the first and second interferometers.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: November 29, 1988
    Assignee: The Perkin-Elmer Corporation
    Inventor: Jens P. Dybwad
  • Patent number: 4786174
    Abstract: In a polychromator, the image plane or the focus line (28) is adapted optimumly to the plane of a detector (26), e.g. to a diode-array. At the same time, an optimum linear wavelength scale is obtained on the detector (26). To this end, an arrangement having a concave grating (14), and an imaging mirror (20) is provided. An optimizing method is described by which both curves can be optimized in converging steps by alternate variation of the distance b between concave grating (14) and mirror (20) and the asymmetry measure G' of the concave grating (14).
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: November 22, 1988
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventor: Wolfgang Witte, deceased
  • Patent number: 4779966
    Abstract: A well corrected ring field catadioptric optical system utilizing refractive elements of the same glass type. A virtual relay corrected for axial and lateral primary color incorporates an air-surface doublet and two field lenses to correct for field aberrations to provide a well corrected ring field virtual image. A spherical mirror is used to make the virtual image accessible.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: October 25, 1988
    Assignee: The Perkin-Elmer Corporation
    Inventor: Irwin Friedman
  • Patent number: 4779216
    Abstract: A method for calibrating a monochromator to compensate for mechanical imperfections in its diffraction grating and grating drive assembly employs a two stage interactive procedure which permits the use of small (0.2 nm) spectral regions for the identification of emission lines. An iterative, self-consistent, discrete Fourier transform is used for the determination of multiple positioning correction terms. When the Fourier calculations are completed, the results of the calibration procedure are presented by the system to the analyst for acceptance. If accepted, the positioning error of the primary calibration line is measured, stored and used by the system to maintain a zero centered distribution of positioning errors each time the monochromator is reinitialized.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: October 18, 1988
    Assignee: The Perkin-Elmer Corporation
    Inventor: John B. Collins
  • Patent number: 4776694
    Abstract: A burner assembly for an atomic absorption spectrometer having carrier (20) fixed to the burner head (14) and mounting a flame sensor (96) and an ignition device (16) so as to permit a single alignment of the flame sensor (18) and the ignition device (16) relative to the burner head (14) and subsequent movement or adjustment of the burner relative to the housing without changing the mutual positions of the ignition device (16) and the flame sensor (18) and while the flame is burning.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: October 11, 1988
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventors: Klaus P. Rogasch, Rolf Tamm
  • Patent number: 4776786
    Abstract: A gas conducting tube (12) with a flat end (14) cut off at an angle is pivotal above the burner head 10 for lighting the flame of an atomic absorption spectrometer. Gas emerging from the burner is passed through the tube from the first end 14 to a second end 16 where a glow filament 24 is arranged. The diverted gas is lit and flashes back to the burner, whereby the flame thereof is lit. After the flame has been lit, the tube 12 is rotated out of the area of the burner head 10.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: October 11, 1988
    Assignee: Bodenseewerk Perkin-Elmer
    Inventors: Bernhard Huber, Toma Tomoff
  • Patent number: 4773755
    Abstract: An apparatus and method for determining the zero line in atomic absorption spectrometers having an atomizer and a burner for atomizing the sample wherein the flow of oxidizing agent supplied to the atomizer is interrupted by means of a switching valve and an additional flow of oxidizing agent is supplied to the burner through a by-pass conduit by-passing the atomizer with the additional flow being equal to the flow of oxidizing agent to the atomizer during operation of the atomizer and the absorption of the measuring light beam defining the zero line.
    Type: Grant
    Filed: August 27, 1986
    Date of Patent: September 27, 1988
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventor: Bernhard Huber
  • Patent number: 4773552
    Abstract: A closure and method of assembly for sample vials comprising a cap and a septum with the septum having a plurality of radially extending protrusions for retentive engagement with the cap to retain the septum and annular disk within the cap during positioning of the closure on the sample vial.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: September 27, 1988
    Assignee: Bodenseewerk Perkin-Elmer & Co., GmbH
    Inventors: Dietrich H. Boege, Wolfgang Riegger