Patents by Inventor Francesco Lonati

Francesco Lonati has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7065988
    Abstract: A device for varying stitch tightness for hosiery knitting machines, particularly for circular knitting machines, which comprises a movement adjuster connected to a slider that can slide in the cam box of the machine and supports a knockover cam of the machine. The movement adjuster comprises an actuator, connected to an adjustment cam and actuatable so as to turn the adjustment cam about its own axis through preset angles. The adjustment cam has a single external active profile, two cam followers being arranged on the slider to make contact with the active profile of the adjustment cam in two spaced points and cooperate in determining a bilateral coupling with the adjustment cam.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: June 27, 2006
    Assignee: Santoni S.p.A.
    Inventors: Ettore Lonati, legal representative, Fausto Lonati, legal representative, Tiberio Lonati, legal representative, Francesco Lonati, deceased
  • Patent number: 7032414
    Abstract: A thread gripping device, for gripping elastic thin thread, in a circular knitting machines, having a supporting element that supports thread guides proximate to a drop or feed, above the needle cylinder and proximate to the needle work area, and bearing at least one elastic lamina element and a thread locking lever pivoted to the supporting element and to rotate scissor-like to catch the thread with a grip portion between the locking lever and the elastic lamina element. The thread gripping region of the locking lever is made of a material with higher friction coefficient, than the remaining part of the locking lever.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: April 25, 2006
    Assignee: Santoni S.p.A.
    Inventors: Ettore Lonati, legal representative, Fausto Lonati, Tiberio Lonati, Francesco Lonati, deceased
  • Publication number: 20050284188
    Abstract: A device for varying stitch tightness for hosiery knitting machines, particularly for circular knitting machines, which comprises a movement adjuster connected to a slider that can slide in the cam box of the machine and supports a knockover cam of the machine. The movement adjuster comprises an actuator, connected to an adjustment cam and actuatable so as to turn the adjustment cam about its own axis through preset angles. The adjustment cam has a single external active profile, two cam followers being arranged on the slider to make contact with the active profile of the adjustment cam in two spaced points and cooperate in determining a bilateral coupling with the adjustment cam.
    Type: Application
    Filed: December 11, 2002
    Publication date: December 29, 2005
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6920768
    Abstract: A device for gripping thread in circular hosiery knitting machines comprising a supporting element fixable to the structure of the machine supporting the thread guides proximate to a drop or feed, above the needle cylinder and proximate to the needle work area, that bears at least one elastic lamina element and a thread locking lever pivoted to the supporting element and rotatable scissor-like with respect to the elastic lamina element to catch the thread with a grip portion between the locking lever and the elastic lamina element. The thread grip portion of the locking lever has two opposite shoulders that delimit bilaterally movement of the thread toward or away from the axis of the needle cylinder.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 26, 2005
    Assignee: Santoni S.p.A.
    Inventors: Ettore Lonati, Fausto Lonati, Tiberio Lonati, Francesco Lonati
  • Publication number: 20050076681
    Abstract: A device for gripping thread in circular hosiery knitting machines comprising a supporting element fixable to the structure of the machine supporting the thread guides proximate to a drop or feed, above the needle cylinder and proximate to the needle work area, that bears at least one elastic lamina element and a thread locking lever pivoted to the supporting element and rotatable scissor-like with respect to the elastic lamina element to catch the thread with a grip portion between the locking lever and the elastic lamina element. The thread grip portion of the locking lever has two opposite shoulders that delimit bilaterally movement of the thread toward or away from the axis of the needle cylinder.
    Type: Application
    Filed: December 17, 2002
    Publication date: April 14, 2005
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Publication number: 20050066692
    Abstract: A thread gripping device, for gripping elastic thin thread, in a circular knitting machines, having a supporting element that supports thread guides proximate to a drop or feed, above the needle cylinder and proximate to the needle work area, and bearing at least one elastic lamina element and a thread locking lever pivoted to the supporting element and to rotate scissor-like to catch the thread with a grip portion between the locking lever and the elastic lamina element. The thread gripping region of the locking lever is made of a material with higher friction coefficient, than the remaining part of the locking lever.
    Type: Application
    Filed: December 17, 2002
    Publication date: March 31, 2005
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6223564
    Abstract: A method for producing tubular items, such as hosiery items and the like, which are closed at an axial end, using a single-cylinder circular knitting machine provided with a half-dial which faces, in an upward region, a first half of the needle cylinder and has hooks which can move in a radial direction with respect to the axis of the needle cylinder, each hook being arranged between two contiguous needles of the half of the needle cylinder that it faces. The half-dial can turn over about a diametrical axis of the needle cylinder so that its hooks face the needles of the second half of the needle cylinder. The hooks can move in a radial direction with respect to the axis of the needle cylinder in order to engage portions of loops of knitting formed by the needles of the first half of the needle cylinder before the half-dial turns over and in order to release the portions of loops of knitting to the needles of the second half of the needle cylinder after the half-dial has turned over.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: May 1, 2001
    Assignee: Lonati S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Tiberio Lonati, Fausto Lonati
  • Patent number: 6176106
    Abstract: A dial or half-dial for single-cylinder circular hosiery knitting machines, particularly for producing tubular items closed at one longitudinal end, which comprises a dial or half-dial body which is substantially shaped like a disk or half-disk and is provided, on at least one of its two faces, with a plurality of radial slots, each of which slideably accommodates at least one hook. The hooks have a longitudinal slit which is open in the direction of the axis of the dial or half-dial body. The slit gives a portion of the body of the hooks a bifurcated shape which engages the two opposite faces of the dial or half-dial body.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: January 23, 2001
    Assignee: Lonati S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Tiberio Lonati, Fausto Lonati
  • Patent number: 6164090
    Abstract: A needle actuation device for knitting machines, comprising a cam supporting surface which faces a needle supporting element and supports at least one casting-off cam which has a profile arranged at an angle to the direction in which the needle supporting element moves with respect to the cam supporting surface during the operation of the machine. The profile of the casting-off cam can be engaged by a heel of the needles, or of needle pusher elements, which protrudes from the needle supporting element toward the cam supporting surface. The casting-off cam is supported by the cam supporting surface so that it can rotate about a first axis which is substantially perpendicular to the surface of the portion of the needle supporting element that faces in each instance the cam supporting surface and can rotate on command about the first axis in order to vary the inclination of its profile with respect to the direction of motion.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: December 26, 2000
    Assignee: Matec S.p.A.
    Inventors: Francesco Lonati, Tiberio Lonati, Ettore Lonati, Fausto Lonati
  • Patent number: 6164094
    Abstract: A method for manufacturing a dressing item such as an undershirt, body suit or the like with a circular knitting machine, and an item obtained thereby, the method comprising: at least one first step, during which an annular border is formed which constitutes the neck of the item; at least one second step, during which a first tubular portion of knitting is formed starting from the annular border; at least one third step, during which a second tubular portion of knitting is formed to continue the first tubular portion of knitting; and a fourth step, during which a completion portion of the item is formed. The annular border is formed by at least one prestretched elastic yarn and/or by using a limited number of needles with respect to the number used to form the first tubular portion of knitting and/or the second tubular portion of knitting, so as to obtain an item with a neck having a smaller diameter than the remaining part of the item and without seams in the shoulder region.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 26, 2000
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6125665
    Abstract: A method for producing stockings, particularly of the pop-sock type or the like, with a form-fitting shape, and a stocking obtained with the method comprising: a first step, during which the stocking portion that corresponds to the leg region located above the calf is formed; a second step, during which the stocking portion corresponding to the intermediate region of the leg is formed; and a third step, during which the stocking portion that corresponds to the leg region located below the calf is formed. During the second step the length of the loops of knitting located in the rear region of the stocking is increased with respect to the length of the loops of knitting located in the front region, in order to obtain, on the rear region of the stocking, an extra portion with respect to the front region; the extra portion has to contain the calf.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: October 3, 2000
    Assignee: Lonati S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Tiberio Lonati, Fausto Lonati
  • Patent number: 6122939
    Abstract: A process and an apparatus for reducing the length of the lead-in thread in double-cylinder circular hosiery-making or knitting machines in which the thread, fed by a corresponding thread guide, is clamped at its end, before knitting begins, by a thread cutting and clamping device which laterally faces the needle cylinders of the machine downstream of the position of the thread guide, relative to the direction in which the needle cylinders rotate about their own axis, with respect to the thread guide and to the cutting and clamping device. The process consists in keeping the thread clamped by the cutting and clamping device even after the thread has been taken up by the needles at the beginning of the knitting process, and in cutting the portion of thread which, at the beginning of the knitting process, lies between the first needle that took up the thread and the point where the thread is clamped in the cutting and clamping device.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: September 26, 2000
    Assignees: Lonati S.p.A., Matec S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Tiberio Lonati, Fausto Lonati
  • Patent number: 6094945
    Abstract: A device for feeding an elastically extendable yarn to hosiery knitting machines, which includes a positive yarn feeder composed of two mutually opposite contrarotating rollers which have parallel axes and between which the yarn to be fed passes. Elements are provided for rotationally actuating at least one of the rollers about its own axis with a rotation rate which can vary on command. Downstream of the positive feeder along the yarn feed direction, there are arranged elements for detecting the tension of the yarn and a programmable control and monitoring unit which is operatively connected to the detector elements. The control and monitoring unit compares the yarn tension detected by the detector elements with a yarn tension which is preset in the control and monitoring unit.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: August 1, 2000
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6089048
    Abstract: A yarn feeder, particularly for elastic yarns having a high elongation coefficient, in circular knitting machines. The feeder comprises a series of passages and/or contact regions forming a path for the yarn that unwinds from the spool or reel up to the needle work area of the machine. The feeder comprises, along the path, an element which can engage the yarn and can move on command in order to lengthen the yarn path so as to produce an excess length of yarn unwound from the spool with respect to the length of yarn required by the machine and so as to supply at least part of the excess yarn directly before yarn cutting, which is performed proximate to the needle work area of the machine.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: July 18, 2000
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6082145
    Abstract: A method for manufacturing knitted items, particularly for manufacturing items of underwear, with a passage for the insertion of support wires or other insertion elements, in circular knitting machines, and an item obtained with the method. The method consists in forming the passage for the insertion of the wire or other insertion element in an intermediate production step during the knitting of the item, by knitting additional row portions with a preset number of needles alternated with needles excluded from knitting during the formation of the additional rows. In this manner, on one side of the item, a tunnel is obtained which is part of the item and inside which it is possible to insert a support wire or other insertion elements.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: July 4, 2000
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6023949
    Abstract: A circular machine for knitting or hosiery with a device for tensioning the knitted fabric, the tensioning device comprising at least two tensioning rollers which are arranged below the needle work area and are arranged substantially horizontally. The tensioning rollers face each other and actuation elements are provided which act on at least one of the tensioning rollers to turn it about the corresponding axis in order to tension the knitted fabric which is formed by the needles and passes between the tensioning rollers. The tensioning device comprises first detection elements for detecting the degree of tension of the fabric in a region of the portion of fabric that lies between the needle work area and the tensioning rollers. The first detection device is operatively connected to the first actuation element in order to vary or maintain the rotation rate of the tensioning rollers as a function of the detected tension degree tension and of a preset tension degree.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: February 15, 2000
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 6014875
    Abstract: A needle selection device in a circular knitting machine, including: needles which are slidingly accommodated in grooves formed in a needle holder and which have pivoting levers provided with heels; needle actuation cams facing the needle holder and forming a path which can be engaged by the heels of the needle levers as the needle holder moves with respect to the needle actuation cams in order to make the levers follow the path for actuation of the corresponding needle along the corresponding groove of the needle holder parallel to the longitudinal extension of the needle, and for each needle the lever oscillates about its pivoting axis, from an active position, in which its heel protrudes from the corresponding groove of the needle holder so as to engage the path formed by the needle actuation cams, to an inactive position, in which its heel is inserted in the corresponding groove of the needle holder in order to avoid engaging the path formed by the needle actuation cams; a reset element acting on the leve
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: January 18, 2000
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 5992182
    Abstract: A method for ladderproofing the last row of a knitted item consisting in that, upon execution of the last row of the item, the interstitch portions, i.e., the portions of the thread or threads that join two contiguous loops of knitting, are produced with an increased length, forming additional loops which are alternated with the loops of the last row of knitting. Preferably, each one of the loops of the last row is knit in with a contiguous additional loop, further reinforcing the ladderproofing of the last row of the item.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: November 30, 1999
    Assignee: Matec S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Tiberio Lonati, Fausto Lonati
  • Patent number: 5966968
    Abstract: A single-cylinder circular machine for knitting, hosiery or the like, with a device for actuating the cutter mounted on the dial comprises: a needle cylinder, which can be rotationally actuated about its own axis; a dial, which is arranged above the needle cylinder and is supported so that it can rotate about its own axis; and a cutter for cutting the yarns, which is mounted coaxially on the dial and is provided with cutting teeth arranged around its own axis. The machine has a device which comprises an actuation for the cutter with a rotary motion about its own axis with a rotation rate which can be diversified from the rotation rate of the needle cylinder, in order to vary the length of the trailing portion of yarn that lies between the last needle of the machine taking up the yarn and the blade cooperating with the cutter in cutting the yarn.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: October 19, 1999
    Assignee: Lonati S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
  • Patent number: 5931025
    Abstract: A set of cams for actuating the lowering sinkers in circular knitting machines, for producing standard-terry knitting and sandwich-terry knitting. The cam set comprises cams and countercams which form a path for the heels of the lowering sinkers which have two lowering planes arranged at mutually different elevations for at least two yarns which are dispensed at a feed of the machine to form loops of terry knitting. The cam set also comprises, in the region of the path that corresponds to the descent of the needles of the needle cylinder to form loops of knitting with the two yarns dispensed at a feed of the machine, a cam which can move on command into two operating positions in order to produce at least one variation of the path formed by the cams and countercams.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: August 3, 1999
    Assignee: Santoni S.p.A.
    Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati