Patents Examined by Charles Gorenstein
  • Patent number: 4232507
    Abstract: Apparatus and method for wrapping core yarns, the apparatus including a plurality of spools driven by a single spindle and the method including the steps of applying two or more layers of wrapped yarn to a core yarn by the use of a minimum number of spindles.
    Type: Grant
    Filed: February 22, 1973
    Date of Patent: November 11, 1980
    Assignee: Carlo Menegatto
    Inventors: Francis B. Northup, Donald R. Hart
  • Patent number: 4197754
    Abstract: An apparatus for measuring or monitoring changes in the periphery of a vessel, especially a pressure vessel for containment of a nuclear-reactor core, comprises a wire which extends around the periphery of the vessel and is held along this periphery by a plurality of mechanical elements establishing a predetermined spaced relationship between the wire and the periphery. The wire extends polygonally around these elements and is provided with a displacement-measuring device responsive to any tendency of the wire to shift from its original position. According to the invention, the connecting elements between the wire and the periphery of the vessel are constituted as sheet-metal plates or vanes lying in planes substantially perpendicular to the axis of the wire and extending radially with respect to the axis of the vessel. The vanes are elastically deformable laterally or shiftable in the direction of the axis of the wire and are retained under tension by the tension applied to the wire.
    Type: Grant
    Filed: May 18, 1978
    Date of Patent: April 15, 1980
    Assignee: Siempelkamp Giesserei GmbH & Co.
    Inventors: Hermann Ostendorf, Ernst P. Warnke
  • Patent number: 4180967
    Abstract: An apparatus for twisting together a first and second yarn has a frame extending in a longitudinal direction and carrying a row of upright spindles each having and rotatable about an upright spindle axis. A holder is carried on the frame above each spindle and in turn carries a pair of yarn supplies one which may be the first yarn and one the second, or both the first. When the holder carries both first and second yarn supplies the spindle is operated as a takeup spool and is provided with a traveling-ring arrangement, with the two yarns being pulled off the respective supplies and twisted together. When the holder carries only two supplies of the first yarn the supply of the second yarn can be carried on the spindle, and a separate takeup spool can be provided above the spindle and below the holder. This takeup spool is driven to take up the two yarns and the first yarn is fed from the holder down and then up through the hollow spindle to be twisted with the second yarn that is simultaneously being spun.
    Type: Grant
    Filed: March 15, 1978
    Date of Patent: January 1, 1980
    Assignee: Hamel GmbH - Zwirnmaschinen
    Inventors: Aloys Greive, Aloys Horstmann
  • Patent number: 4175446
    Abstract: The number of steps taken while walking are counted by straining a fatigue life gauge to change its electrical resistance each time the device is stepped on by a subject. The change in resistance of the fatigue life gauge is measured to ascertain the approximate number of steps taken.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: November 27, 1979
    Assignee: The University of Iowa Research Foundation
    Inventors: Roy D. Crowninshield, Andrew J. Branch
  • Patent number: 4173860
    Abstract: A new method has been invented for introducing texture, crimp, or set twist into synthetic polymer yarns which eliminates the need to heat the yarns prior to the texturing step. It has been found that the heat generated in the drawing step of synthetic yarn manufacturing processes is sufficient to cause a twisted undrawn yarn to retain the twist permanently after being drawn. The mild heat treatment experienced by the fibers is highly uniform and produces textured yarns of exceptional uniformity, especially with respect to dyeability, as compared with textured yarns produced by known art processes.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: November 13, 1979
    Inventor: John R. McKlveen
  • Patent number: 4173115
    Abstract: False-twisted yarn strands are separately carried around a guide wheel and the nodes thereof are brought together and locked by applying heat to the nodes and pressing them together, after which the strands are self-twisted. Embodiments include a cam actuated clamping device which holds the yarns in an ultrasonic transducer to which energy is supplied to accomplish the welding. Devices using resistance heating and laser impulses are also disclosed.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: November 6, 1979
    Assignee: WWG Industries, Inc.
    Inventors: Phillip W. Chambley, Alan H. Norris
  • Patent number: 4172357
    Abstract: A process and apparatus for piecing a yarn on spinning assemblies of an open end spinning machine is provided. A prepared yarn end is pieced to a sliver ring produced in a spinning rotor during running up of the spinning rotor from a predetermined slower speed toward its operational normal spinning speed. In order to accommodate application of the yarn end to the sliver ring, the formation of the sliver ring, and the drawing off of new yarn pieced together at the sliver ring, the invention provides for a control of the acceleration behavior of the spinning rotor so as to lengthen the time segment in which the piecing steps can be performed. In preferred embodiments, non-contact electromagnet or electrical eddy current braking means are provided for countering the driving torque of a common drive means for the rotors of several spinning assemblies, whereby the acceleration curve is flattened with a lengthening of the time period for existent desirable piecing speeds.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: October 30, 1979
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Patent number: 4170868
    Abstract: False-twisted yarn strands are separately carried around a guide wheel and the nodes thereof are brought together and locked by mechanical entanglement, after which the strands are self-twisted. Embodiments of entanglement joining devices include reciprocating friction plates which rub the fibers together and twist them, causing joining, the plates being carried on the guide wheel. A needle punching device carried by the wheel is disclosed, the needles being reciprocated by a cam structure within the wheel. In a third embodiment edges of oppositely rotating overlapping discs contact and twist fibers in the node area, causing entanglement.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: October 16, 1979
    Assignee: WWG Industries, Inc.
    Inventors: Phillip W. Chambley, Alan H. Norris
  • Patent number: 4170867
    Abstract: A process for producing a continuous multifilament yarn of melt-spinnable, polymeric material comprising simultaneously draw texturing two partially oriented feeder yarn ends having different molecular orientation due to their respective spinning operations, including plying the two yarn ends together, friction texturing and air jet interlacing the resulting composite yarn. Also disclosed is the spun-like continuous multifilament yarn produced by the disclosed process as well as the resulting fabric made from the yarn. The yarn has components of differing crimp amplitude and frequency.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: October 16, 1979
    Assignee: Phillips Petroleum Company
    Inventor: James C. Leininger
  • Patent number: 4170103
    Abstract: False-twisted yarns are continuously fed to a locking mechanism on a rotating guide wheel. The locking device has a clamping shoe for engaging the yarn, after which the direction of false twist is reversed. Two additional clamping shoes then engage the yarn upstream and downstream of the first clamping point. The first shoe is then retracted to permit the twist between the additional shoes to cancel, and a fluid vortex is used to entangle the yarn filaments, locking the node.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: October 9, 1979
    Assignee: WWG Industries, Inc.
    Inventors: Alan H. Norris, Phillip W. Chambley
  • Patent number: 4169350
    Abstract: The present invention relates to a layout in pneumatic spinning apparatus. In a pneumatic spinning apparatus comprising a drafting device, a pneumatic spinning device, a take-up roller, a winding device and a yarn knotting device, the respective devices are arranged to face an operation space so as to enhance the operation efficiency of the apparatus.
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: October 2, 1979
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Makoto Yamana, Nobunori Kubota
  • Patent number: 4169349
    Abstract: A method for producing a spun-like yarn simulating a staple yarn is described wherein continuous filament yarn is produced which has characteristics similar to a staple spun yarn. The unusual continuous filament yarn produced is made by a texturing process which involves the crimping of a continuous synthetic yarn followed by overfeeding to an air bulking means and then to heat setting means. The preferred method utilizes false twist texturing of synthetic filaments such as polyester, nylon, cellulose acetate or cellulose triacetate and mixtures thereof with an air bulking jet interposed to act on the false twist textured yarn while it has a high residual torque and subsequently decaying said torque.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: October 2, 1979
    Assignee: Fiber Industries, Inc.
    Inventor: James R. Talbot
  • Patent number: 4169551
    Abstract: An apparatus is disclosed for threading one of several generally parallel strands through an operation through which the strands travel. The apparatus is designed to thread a broken strand using the movement of strands adjacent to this strand. The apparatus is also designed to reduce the downtime for the adjacent strands which are employed to pull and guide the broken strand through the rethreading operation. The apparatus is designed to allow for strand guide stabilization through the rethreading operation to allow the strands and guide to pass through the system easily and without placement errors in strand threading positioning. The apparatus includes a means for holding the broken strand, a means for releasably maintaining an adjacent guide strand within the apparatus and a means for releasably grasping the moving pull strand.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: October 2, 1979
    Assignee: PPG Industries, Inc.
    Inventor: Thomas H. Jensen
  • Patent number: 4169381
    Abstract: A bimetal element operated indicator includes a bimetal carrying a current measuring winding and having a fixed end mounted on a housing, a dial supported on the housing and carrying scale indicia, and a pointer rotatably supported on a stud shaft mounted on the dial and having a driven end coupled with a driving end of the bimetal element such that the pointer is precisely aligned relative to the scale indicia on the dial to provide accurate indicating movement in response to deflection of the bimetal element with temperature change from current in the measuring winding.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: October 2, 1979
    Assignee: VDO Adolf Schindling AG
    Inventor: Arthur Skopil
  • Patent number: 4168604
    Abstract: An apparatus for controlling a plurality of spinning stations by evaluating yarn signals based upon detection of approximately periodic variations in yarn cross section provides for conversion of the signals to digital form and application of the digital signals to a microcomputer in which the sum of the differences between the original yarn signal and a yarn signal delayed in time is continuously formed. Specific fault signals are produced from the summed differences which are checked against predetermined reference values.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: September 25, 1979
    Assignee: Zellweger, Ltd.
    Inventor: Werner Mannhart
  • Patent number: 4168601
    Abstract: There is disclosed a method of and an apparatus for frictional spinning yarn on the open-end principle. Continuously supplied separated fibers are deposited onto a first, perforated frictional surface provided on a rotary carrier for conveying the fibers to the mouth of a wedge-like gap defined by said frictional surface and another, second, frictional surface provided on another rotary carrier. The second frictional surface moves relative to the first-named carrier, in the opposite direction, and with the first frictional surface twists the fibers in the mouth of said wedge-like gap to yarn, due to a contact with the two frictional surfaces. The yarn is withdrawn sidewards relative to the direction of movement of the frictional surfaces while preventing the twist propagation. In accordance with the invention one frictional surface is concave and the other is convex. This results in a number of advantages, including the elimination of undesirable slippage of the yarn in the yarn building region.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: September 25, 1979
    Assignee: Vyzkumny ustav bavlnarsky
    Inventors: Stanislav Didek, Ludvik Fajt, Vaclav Rohlena, Jaromir Kasparek
  • Patent number: 4167847
    Abstract: Disclosed is a bulky yarn made from a thermoplastic multifilament yarn. Each of the individual filaments forming the yarn has a randomly varying thermal shrinkage along its length. The filaments in the cross-section of the yarn also have randomly varying thermal shrinkages. The bulky yarn forms a plurality of loops having a stable and compact configuration, while the number of filament slack portions which project outwardly from the yarn surface is significantly decreased.A method for producing a bulky yarn possessing the above-mentioned construction is also disclosed. In the method, individual filaments forming the multifilament yarn are interlaced with each other, before or after which the yarn is subjected to a so-called random heat treatment. The interlaced and randomly heat-treated yarn is supplied at an over-feed condition to a fluid turbulent flow region which causes the individual filaments to form a plurality of loops and entanglements, and then the yarn is wound onto a package.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: September 18, 1979
    Assignee: Toray Industries, Inc.
    Inventors: Hajime Arai, Yoshiaki Sato, Kiyoshi Nakagawa
  • Patent number: 4167872
    Abstract: A data collection and reduction system for a shock suppressor valve test system is provided. The test system includes a flow meter for generating a DC voltage signal corresponding to the velocity of fluid flowing through the flow meter and a recorder for recording and outputting an AC voltage signal corresponding to the velocity of fluid flowing through the flow meter. The data collection and reduction system includes circuitry interconnected to the flow meter for amplifying the DC voltage signal generated by the flow meter to produce an amplified DC voltage signal. Circuitry converts the amplified DC voltage signal to an AC voltage signal for application to the recorder for recordation of the velocity of the fluid flowing through the flow meter. Circuitry is further provided and interconnected to the recorder for amplifying the AC voltage signal output by the recorder.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: September 18, 1979
    Assignee: E-Systems, Inc.
    Inventor: Lloyd H. Holmes
  • Patent number: 4166384
    Abstract: A semiconductor transducer comprising an improved strain-yielding body yielding a strain in response to the impartation of a force or displacement, and a semiconductor strain gauge bonded to the strain-yielding body. The improved strain-yielding body is made of an iron-nickel-cobalt alloy containing 28.2 to 31.0% by weight of nickel and 15.0 to 19.5% by weight of cobalt. This iron-nickel-cobalt alloy is initially heated up to a temperature above 600.degree. C. for the purpose of standard heat treatment for removing its internal strain. After the standard heat treatment, the iron-nickel-cobalt alloy is subjected to cold working at a working rate of more than and including 60%, and is then subjected to heat treatment at a temperature between 350.degree. C. and 600.degree. C. The heat-treated iron-nickel-cobalt alloy is shaped into the predetermined form of the strain-yielding body.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: September 4, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Yasumasa Matsuda, Kazuji Yamada, Satoshi Shimada, Motohisa Nishihara, Tomio Yasuda, Masatoshi Tsuchiya, Ko Soeno, Mitsuo Ai, Takeo Nagata, Yoshitaka Matsuoka
  • Patent number: 4165640
    Abstract: A data collection and reduction system for a shock suppressor valve test system is provided. The test system includes a flow meter for generating a DC voltage signal corresponding to the velocity of fluid flowing through the flow meter and a recorder for recording and outputting an AC voltage signal corresponding to the velocity of fluid flowing through the flow meter. The data collection and reduction system includes circuitry interconnected to the flow meter for amplifying the DC voltage signal generated by the flow meter to produce an amplified DC voltage signal. Circuitry converts the amplified DC voltage signal to an AC voltage signal for application to the recorder for recordation of the velocity of the fluid flowing through the flow meter. Circuitry is further provided and interconnected to the recorder for amplifying the AC voltage signal output by the recorder.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: August 28, 1979
    Assignee: E-Systems, Inc.
    Inventor: James E. Feser