Patents Assigned to The Singer Company
  • Wave packet communication subsystem for determining the sync pulses and correlating the data pulses of a wave packet
    Patent number: 4688251
    Abstract: A subsystem of a wave packet communication system uses the same sets of receivers and correlators to detect both the sync pulses and the messages carried by different wave packets. The system does this by taking the sync pulses from each packet and generating a corresponding preamble on the basis of a modular arithmetic algorithm based on prime numbers such that different messages from different transmitters can be received by the same subsystem simultaneously.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: August 18, 1987
    Assignee: The Singer Company
    Inventors: Irwin M. Citron, Philip Kaszerman
  • Generic database generator system and method
    Patent number: 4685068
    Abstract: System and method for processing information from a paper map source to produce an accurate high resolution digitized map database in matrix format having separate files for each selected feature. The system and method scans the input paper map source and processes the scanned data into a digitized map database in matrix format with distinct and selectable features as are represented on the input map. Selected features include vegetation, hydrography, lines of communication, miscellaneous features, and terrain elevation. The use of separate files significantly reduces the processing time required by application programs used to analyze or display the data relating to a particular feature.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: August 4, 1987
    Assignee: The Singer Company
    Inventors: Joseph A. Greco, II, Donald K. Hawkins, Scott R. LeGrys, Wai Kit Man
  • Diagnostic circuit utilizing bidirectional test data comparisons
    Patent number: 4683569
    Abstract: Test points are connected in parallel to shift registers which are read out bidirectionally. Comparisons are then made of the data in each direction of shift and inconsistencies of the compared signals, from a reference data signal, cannot only indicate which test point has an error present thereat, but whether and which stage of a shift register employed in the present diagnostic system is inoperative.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: July 28, 1987
    Assignee: The Singer Company
    Inventor: Albert M. Rubin
  • Computer-generated image system to display translucent features with anti-aliasing
    Patent number: 4679040
    Abstract: A computer-generated image system that is described in the Disclosure has a videoprocessor circuit with an integrator circuit to assign a predetermined identification to each edge of each face of any image that is to be displayed. Also, it has a "skip-over logic" circuit to identify any area in the face of any image to be displayed that requires no further intensity modification.Perhaps a key to the success of this arrangement in accordance with the described invention is its provision of a signal modifier circuit to apply a pre-determined intensity modification factor to any area not identified by the skip-over logic circuit. By this arrangement, any area that is to be displayed behind a translucent area will be visible although at a reduced intensity.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: July 7, 1987
    Assignee: The Singer Company
    Inventor: Johnson K. Yan
  • Doppler-inertial data loop for navigation system
    Patent number: 4675822
    Abstract: Accurate vehicle pitch and roll can be computed from a corresponding signal loop which receives inertial data input contaminated by the effects of gravity on a vehicle. Data from Doppler radar is compared to the inertial data and an error signal dependent on pitch or roll angle is substracted from the input inertial data resulting in the generation of accurate navigational parameters.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: June 23, 1987
    Assignee: The Singer Company
    Inventors: Louis S. Marino, Heinz Buell, John M. Fiore
  • Calibration system for mechanical gas volume corrector
    Patent number: 4674316
    Abstract: A calibration system for a mechanical gas volume corrector which has a first shaft turned at a rate corresponding to the otherwise uncorrected volumetric flow rate through the meter, a second shaft, a variable ratio transmission coupled between the first and second shafts, and a mechanism for altering the ratio of the transmission in response to changes of a physical condition of the gas. The calibration system includes an arrangement for applying a representation of a reference state of the physical condition to the ratio altering mechanism, and indicator for indicating a fixed number of revolutions of one of the shafts, an arrangement for determining the number of revolutions of the other of the shafts corresponding to the fixed number of revolutions of the one shaft, and a calculator for determining and displaying the ratio of the other shaft revolution number to the fixed number.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: June 23, 1987
    Assignee: The Singer Company
    Inventors: Charles W. Albrecht, Malcolm W. Cornforth
  • Filter retention system for vacuum cleaners
    Patent number: 4670937
    Abstract: An arrangement in a vacuum cleaner preventing dirt collecting bag spill during a vacuuming operation by the combination of a bag retaining interlock with a cleaner handle shiftable between extreme positions each suitable for a different cleaner operating mode, with interlock release provided only in an intermediate, unuseable handle position.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: June 9, 1987
    Assignee: The Singer Company
    Inventors: William R. Sumerau, Henry C. Harbin
  • Hose connection for vacuum cleaner attachments
    Patent number: 4669755
    Abstract: A vacuum cleaner hose connection fitting is provided which can accommodate attachments both internally and externally thereon, and a single latch device is provided capable of securing either internally or externally accommodated attachments to the hose fitting.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: June 2, 1987
    Assignee: The Singer Company
    Inventors: Frank R. Harris, Marsha J. Cartee
  • Digital frequency multiplier
    Patent number: 4669099
    Abstract: A square wave with a 50% duty cycle which has frequency twice that of an input square wave also having a 50% duty cycle is obtained by generating from the incoming square wave two waveforms having 75% duty cycles with the two waveforms 180.degree. out of phase with each other. The two waveforms are combined in an ANDing operation to obtain an output waveform which is a square wave with twice the frequency of the incoming square wave. In similar fashion, using additional similar circuits and gating, tripling is possible.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: May 26, 1987
    Assignee: The Singer Company
    Inventor: Alfred W. Zinn
  • Method of applying electric motor armature insulation
    Patent number: 4663835
    Abstract: A continuous electric motor armature insulation arrangement is disclosed together with a method for providing such continuous insulation by the use of mold segments which engage a narrow continuous ledge around each armature slot which by the application of pressure seals the mold cavity against escape of injected insulation material and prevents intrusion of insulation into the armature slots.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: May 12, 1987
    Assignee: The Singer Company
    Inventor: George A. Caillier, Sr.
  • Vacuum cleaner bag suspension
    Patent number: 4662913
    Abstract: A resilient support sustaining the upper terminus of a dirt collecting bag on the handle of an upright vacuum cleaner in which an extensible strap on the bag is fastened within a downwardly open recess on the handle maintaining the upper terminus of the bag completely within the handle recess.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: May 5, 1987
    Assignee: The Singer Company
    Inventor: Don W. Vermillion
  • Convertible vacuum cleaner handle
    Patent number: 4662026
    Abstract: A vacuum cleaner handle shiftably supported on a vacuum cleaner body for selective positioning thereon suiting floor supported or hand carried vacuum cleaner operation and including handle segments telescopically adjustable and secured by a common latch element into different handle lengths each suitable for a different vacuum cleaner operating mode.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: May 5, 1987
    Assignee: The Singer Company
    Inventors: William R. Sumerau, Valerie D. Owens
  • Versatile vacuum cleaning appliance
    Patent number: 4660246
    Abstract: A vacuum cleaner having pivotally interconnected body and nozzle head portions and a handle which is extendable for upright floor cleaning operation or retractable for hand carried or cannister type vacuuming operation, in which the handle in retracted position fixes the cleaner body and nozzle head portions against pivotal movement.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: April 28, 1987
    Assignee: The Singer Company
    Inventors: John L. Duncan, John E. Jones, Martin E. Harbeck, Stephen R. Burns
  • Control mechanism for sewing machine stitch forming mechanism
    Patent number: 4658743
    Abstract: A sewing machine having feed control linkage spring biased in one direction and manual selector cams effecting feed control linkage settings in buttonhole stitch formation, one selector cam including a projection effecting abnormal control linkage position from which the control linkage shifts to final setting in the spring bias direction.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: April 21, 1987
    Assignee: The Singer Company
    Inventors: Robert B. Brauch, Pao-Ter Huang
  • Vibrating beam force transducer with angled isolator springs
    Patent number: 4658174
    Abstract: An isolation system which prevents energy from being transferred by the vibrating member of a resonator to its end mounts is formed by having isolator springs coupled to respective isolation masses. Each of the isolation masses is connected to a corresponding end mount. Each pair of isolator springs is angled in such a way that the axes of the isolator springs would intersect at a node located somewhere along the longitudinal axes of the vibrating member. Consequently, the axes of the isolator springs are positioned perpendicularly to loci of motions representing the direction of force and moment reactions produced at the roots of the vibrating member.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: April 14, 1987
    Assignee: The Singer Company-Kearfott Division
    Inventor: William C. Albert
  • Visual system with filter for a simulator
    Patent number: 4657512
    Abstract: The disclosure describes a vehicle simulator visual system for training two individuals, such as a pilot and a co-pilot seated side-by-side to view compound images that are projected on the same large curved screen. Structurally, the system comprises two projectors, each of which has a polarizer to polarize the individual light images in opposite directions in a circular manner. Two separate windshields are simulated and each one supports an analyzer that is polarized in the opposite circular direction from its projector. The polarization of each analyzer is such that one windshield will pass light that is polarized from one projector, and the other windshield will pass light that is polarized by the other polarizer.
    Type: Grant
    Filed: June 8, 1985
    Date of Patent: April 14, 1987
    Assignee: The Singer Company
    Inventor: Richard A. Mecklenborg
  • Vibrating beam force transducer with A-frame beam root and frequency adjusting means
    Patent number: 4658175
    Abstract: A vibrating beam force transducer includes a piezoelectric beam structure supported at first and second ends, and an oscillator for inducing a vibration in the piezoelectric beam. To permit adjusting the bias frequency of the beam, an adjustment mass is formed at the center of the beam, the adjustment mass made of piezoelectric material. Part of the adjustment mass can be broken off to adjust the bias frequency. The first and second ends are attached to the a support structure by first and second legs at each end of the beam, the legs having an angle therebetween, thereby forming an A-frame mount.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: April 14, 1987
    Assignee: The Singer Company-Kearfott Division
    Inventor: William C. Albert
  • Vibrating beam force transducer with single isolator spring
    Patent number: 4656383
    Abstract: A force transducer having a vibratory member either a beam or a string and means for effectively isolating the vibratory member from its end mounts over the range of its operating frequencies to eliminate energy loss to the mounts. The axial stresses, either tension or compression, are directly transferred to the vibratory member to affect its natural resonant frequency. Isolation at vibration frequencies is effected by the cooperation of combined isolator masses and isolator springs with the vibratory member. The isolator masses comprise two bars extending from each end support of the vibratory member, each being coextensive with a portion of the support member. The pairs of masses are axially separated. The isolator springs comprise two single thin, spaced resilient members, each isolator spring connecting a single end support of the member and a single transducer end mount.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: April 7, 1987
    Assignee: The Singer Company-Kearfott Division
    Inventor: William C. Albert
  • Digital distortion-correcting circuit for projection a flat image on a curved screen from a digital data source for a simulator projected-image visual system
    Patent number: 4656521
    Abstract: A simulator projected-image system includes a distortion-correcting circuit to modify flat-image data that is stored sequentially in a Random Access Memory by connecting a source of random address to obtain selected video data from the memory in a predetermined order and a circuit to combine the selected video data to form an image that is substantially free from distortion when projected on a curved screen.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: April 7, 1987
    Assignee: The Singer Company
    Inventors: John R. Trzeciak, James A. Turner
  • Microstrip circuit temperature compensation with stub means
    Patent number: 4654668
    Abstract: In order to achieve temperature compensation in a microstrip linear array, the array is periodically loaded by means of a plurality of open circuited stubs coupled to the main transmission line through tightly controlled gap dimensions to provide increasing shunt susceptance which compensates for the decease in shunt susceptance of the line as temperature increases.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: March 31, 1987
    Assignee: The Singer Company
    Inventors: Leonard Schwartz, Emile J. Deveau