Patents Assigned to Leesona Corporation
  • Patent number: 4028779
    Abstract: The present disclosure relates to a size reduction apparatus such as a granulator and particularly to a novel feed assembly for such a granulator whereby thin plastic sheet material may be successfully granulated at high through-put speeds. The construction includes the use of a closed chamber mounted above the granulator chamber and having a longitudinally orientated feed slot therein, directly above which a pair of nip rolls are mounted so as to enable sheet material to be fed directly into the chamber of the granulating machine towards the rotor and in a generally radial direction thereto. The device is operated while the chamber thereof is at least partly full of partially granulated material.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: June 14, 1977
    Assignee: Leesona Corporation
    Inventor: Sunil C. Shah
  • Patent number: 4013237
    Abstract: The present invention is directed to a method and apparatus for forming a tailing end of predetermined length and the resultant package formed thereby. The tailing device includes a conically shaped hub positioned on the outboard end of a drive roll and provided with a spiral groove in the outer surface. The groove runs from a terminal flat circular groove upwardly to the main cylindrical drive portion of the roll. Means are provided for moving a strand sequentially into contact with the flat circular groove to form a bunch on the package support and thereafter in contact with the spiral groove so as to print helically wound wraps of strand about the support prior to the initiation of winding the main body of strand on the package as by conventional traverse means. The width and number of turns the spiral groove makes along the extent of the hub regulates the length of usable tailing end that will be formed in the completed package.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: March 22, 1977
    Assignee: Leesona Corporation
    Inventor: Thomas William Perrino
  • Patent number: 4009839
    Abstract: This application relates to an apparatus for winding strandular material known in the textile industry as a takeup device. The overall arrangement of the device incorporates a stationary supporting spindle onto which a rotatable package support is mounted for receipt of strandular material wound thereon. The support and the strandular material wound thereon as the package is progressively built, is adapted for contact with a rotatable drive drum. A traverse device to guide the strandular material to the rotatable package and control the manner in which the strandular material is wound thereon is also included. Both the drive means and the traverse means including the motors therefor are mounted on a freely vertical movable carriage supported within a frame member and uniquely counterbalanced by a pulley suspended counterweight system. The spindle and the package support are mounted on said frame independent of such carriage.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: March 1, 1977
    Assignee: Leesona Corporation
    Inventor: William Malcolm Bense
  • Patent number: 4006863
    Abstract: This application relates to an apparatus for winding strand onto a rotating member to form a package including means for traversing the strand axially of the member to form a plurality of layers thereover. A novel manner for supporting the traversing means while permitting such to oscillate so as to scatter the point at which the strand is laid down at opposite ends of the package and novel means for adjusting the stroke of such oscillation during machine operation are disclosed.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: February 8, 1977
    Assignee: Leesona Corporation
    Inventor: William Malcolm Bense
  • Patent number: 4001039
    Abstract: Lightweight electrodes and their method of manufacture for disposition in an electrochemical cell are described. The electrodes comprise a catalytic layer made up of a substantially uniform admixture of metal containing electrocatalyst particles and a fluorocarbon polymer. The manufacture is such that an open pore structure is obtained having porosity sufficient to permit diffusion of gases into the catalytic layer. There is further described electrolytes comprising an eutectic mixture of at least two alkali metal hydroxides substantially free of water and electrolytes which are mobile and have a pastelike consistency at a temperature below about 300.degree. C.
    Type: Grant
    Filed: May 4, 1971
    Date of Patent: January 4, 1977
    Assignee: Leesona Corporation
    Inventors: Glenn V. Elmore, Howard A. Tanner
  • Patent number: 4000860
    Abstract: The present disclosure relates to a size reduction apparatus such as a granulating machine of the type for cutting plastics and the like. The granulating machine includes a chamber provided with a driven rotor having a plurality of cutting elements mounted on the periphery thereof, each cutting element having in turn a plurality of spaced cutting knives. The cutting knives cooperate with stationary bed knives to comminute materials fed into the cutting chamber. The downstroke side of the cutting chamber is further provided with an access opening normally closed during cutting operations by a cover, which may be of particularly heavy slotted construction and which provides a backup surface for the material being comminuted. The disclosed granulating machine is particularly useful in comminuting large chunks of plastic material such as heavy purging, thick sheet and cast blocks. Machines of this type are designated as hog type granulators in the industry.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: January 4, 1977
    Assignee: Leesona Corporation
    Inventor: Stanley T. Gotham
  • Patent number: 4000386
    Abstract: Low-cost fluid-operated electric relay type logic elements are provided with an elastomeric conductive diaphragm flexed out of a stable taut intermediate position by means of differential pressures of fluid signals directed into respective chambers on opposite sides to provide thereby break or make connections with cooperating conductive contacts. Thus fluid logic, switching circuit logic or hybrid logic operations may be effected directly with attendant advantages of reliability and more powerful logic capabilities. Alternatively the elements may serve as interfacing members to produce electrical signals from fluid systems. The elements have further advantages as servicing monitor means where access is provided to conductive circuits displaying more servicing information relating to operational characteristics of the fluid logic devices than possible with fluid indicators.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: December 28, 1976
    Assignee: Leesona Corporation
    Inventor: Charles William Brouwer
  • Patent number: 3981959
    Abstract: Apparatus for pelletizing synthetic plastic resins, comprising an extruding die assembly having extrusion orifice sleeves pervious to liquid, a water jacket surrounding each sleeve in such manner that water will pass through the walls thereof to chill plastic being extruded therethrough while at the same time lubricating passage of the plastic therethrough. Severing means are provided at the die face for cutting the plastic into pellets as it is extruded. Optionally means are provided for collecting the pellets such as a casing that surrounds the die and the cutting means.
    Type: Grant
    Filed: February 12, 1975
    Date of Patent: September 21, 1976
    Assignee: Leesona Corporation
    Inventor: David William Cuff
  • Patent number: 3971200
    Abstract: The instant invention relates to a continuous process for the manufacture of heat set yarns. The process comprises firstly passing a two or more ply twisted filament or spun yarns having a latent bulk in the single ends into a first heating zone to develop the latent bulk, passing the yarn into a second heating zone where the yarn is heated to a temperature higher than it was heated in the first zone, and then passing the yarn into a cooling zone while imposing a false twist which runs back into its second heating zone. The second heating zone and the cooling zone serve to set the bulk and the twist and to increase the torque of the yarn. The yarn is then fed to a take-up and wound into a package.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: July 27, 1976
    Assignee: Leesona Corporation
    Inventor: Hans Heinrich Richter
  • Patent number: 3968939
    Abstract: Disclosed herein is mechanism for lubricating the traverse portion of winding apparatus. The lubricating mechanism includes an atomizing system for introducing an oil mist into a housing which generally encloses a traverse cam mounted for rotation on suitable bearings within the housing. The oil mist is effective to lubricate the various parts of the traverse system notwithstanding that the traverse cam may be rotating at speeds of 7,000 r.p.m. and higher. The housing enclosing the traverse cam is provided with a slot through which a strand guide, attached to a cam follower, projects. The cam follower is engaged in an endless groove in the traverse cam and as the traverse cam is rotated the guide is reciprocated from end to end of the traverse cam groove and is thus operable to distribute an advancing strand with which it is engaged onto a rotating package.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: July 13, 1976
    Assignee: Leesona Corporation
    Inventor: William Malcolm Bense
  • Patent number: 3963519
    Abstract: Primary and secondary lightweight "AA," "C," "D," and the like metal/air cells comprising an anode, a cathode, and an electrolyte are described in which the anode comprises a consumable porous metal and the cathode comprises a hydrophobic member in contact at one surface with an electrocatalyst. The aforesaid components of the cell are retained in a substantially rigid protective shield and spaced therefrom permitting access of air to the cathode over substantially the entire cathode surface area. The structural elements which include the protective shield spacers to space the shield from the cathode comprise lightweight materials such as lightweight metals or a thermosetting or thermoplastic resin or the like. The electrolyte can be a solution or paste of an ion-conductive material or a water-activatable solid, such as "dry" potassium hydroxide adhering to or absorbed in the anode and/or cathode and/or a hydrophilic separator between the anode and cathode.
    Type: Grant
    Filed: August 3, 1971
    Date of Patent: June 15, 1976
    Assignee: Leesona Corporation
    Inventor: Hong Po Louie
  • Patent number: 3960600
    Abstract: An improved anode primarily for use in a metal/air or metal/oxygen cell is described. The anode comprises a porous metal body wrapped in first and second layers of different and distinct materials, the first layer being hydrophilic and gas-impermeable, when in contact with an aqueous electrolyte such as the cellulosic membranes; and the second layer, preferably in bag form, being gas-permeable, hydrophilic, dimensionally stable, and heat sealable such as co-polymers of vinyl chloride and acrylonitrile. Superior cell performance is obtained.
    Type: Grant
    Filed: March 9, 1971
    Date of Patent: June 1, 1976
    Assignee: Leesona Corporation
    Inventor: Stewart M. Chodosh
  • Patent number: 3955664
    Abstract: The instant invention relates to a mechanism for aligning bobbins in, for example, a loom for subsequent movement of the bobbins to, for example, a stripping unit associated with the loom. The apparatus includes an inclined ramp upon which the bobbins fall and an upstream deflector mechanism to deflect and position a falling bobbin for engagement with the inclined ramp to align the bobbins and to prevent jamming thereof.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: May 11, 1976
    Assignee: Leesona Corporation
    Inventor: Thomas E. Pitts
  • Patent number: 3941684
    Abstract: A system for size reduction and separation of plastic-metal assemblies for the purpose of reclaiming the plastic and/or metal for reuse. The system includes a granulator followed by a fiber/dust separator with these components preferably being repeated, followed by a screening separator, and finally a hightension separator for separating plastic and metal. The system particularly incorporates an impact-counterflow separator for removing fiber/dust from heavier plastic and metallic particles.
    Type: Grant
    Filed: March 11, 1974
    Date of Patent: March 2, 1976
    Assignee: Leesona Corporation
    Inventors: Christopher Grover Bradbury, Stanley Thomas Gotham, Joseph Paul Wudyka
  • Patent number: 3940078
    Abstract: The instant invention relates to a belt driven traverse for reciprocating a running strand of yarn in a winding machine. Said traverse means comprises a timing type belt travelling in a closed path around two sprockets and which carries and reciprocates a yarn guide longitudinally of a winding package. Means are associated with said yarn guide to prevent rotary motion thereof as it is carried around said closed path.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: February 24, 1976
    Assignee: Leesona Corporation
    Inventors: William M. Bense, Thomas W. Perino
  • Patent number: 3938750
    Abstract: Winding apparatus is disclosed herein which includes a strand detection system having a fault sensing zone operable to receive a strand and detect faults therein as the strand moves through the zone. Mechanism is incorporated to delay re-entry of the strand into the fault sensing zone following detection of a fault in the strand which leads to removal of the strand from the system.
    Type: Grant
    Filed: September 5, 1974
    Date of Patent: February 17, 1976
    Assignee: Leesona Corporation
    Inventors: Porter I. Barnes, Carlton A. Steele
  • Patent number: 3930886
    Abstract: An improved hydrophobic polymer matrix having preselected wettable characteristics.
    Type: Grant
    Filed: June 18, 1973
    Date of Patent: January 6, 1976
    Assignee: Leesona Corporation
    Inventors: Edward C. Mesiti, Solomon Rosenblatt
  • Patent number: 3930623
    Abstract: This invention relates to an indexing supply creel of novel construction that automatically indexes either fully or partially wound packages to a winding spindle of an automatic winding machine. The supply creel construction has particular utility in handling the large packages resulting from production on open end spinning process machines.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 6, 1976
    Assignee: Leesona Corporation
    Inventor: Richard I. Walden