Patents by Inventor Luciano Corain

Luciano Corain 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: 6431223
    Abstract: A bringer gripper for looms without shuttles, where the weft yam is placed in an upper notch and in a gripping organ, particularly suitable for the simultaneous presentation of one or more wefts to the warp inlet and to the taker gripper, in which the upper notch is shaped with a multiple number of throats of different axial length. The weft yarns fit into the bottom of these throats and are essentially offset in the gripper's direction of motion.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: August 13, 2002
    Assignee: Sulzer Tessile Srl
    Inventors: Luciano Corain, Giulio Bortoli, Luigi Corazzola
  • Patent number: 6026864
    Abstract: A modular device for weft yarn presentation in a shuttleless loom, operated by linear electric motors which present the yarn by using rods mounted on sliders which rotate to transition the rods from raised standby positions to lowered delivery positions. The linear motors include fixed plates and pivotally mounted sliders, each carrying a rod. The fixed plates are assembled such that the plates angularly diverge from one another from adjacent the pivotal mounting between the sliders and plates and form acute angles therebetween. By using this arrangement, the delivery segment for the yarns is significantly shorter and the angle of presentation of the yarns is substantially narrower.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: February 22, 2000
    Inventors: Luciano Corain, Luigi Corazzola, Giulio Bortoli
  • Patent number: 6006795
    Abstract: A device for weft yarn presentation in a shuttleless loom is operated by linear electric motors. The motors include fixed plates and movable plates pivotally mounted to the fixed plates. Yarn presenting rods are carried by the pivotal plates and rotate from raised stand-by positions to lowered delivery positions. The respective axes of rotation of the pivoted plates are arranged on a line skewed to the path of movement of the gripper so that the weft yarn delivery positions are close together.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: December 28, 1999
    Inventors: Luciano Corain, Luigi Corazzola, Giulio Bortoli
  • Patent number: 5819812
    Abstract: A giver gripper for a gripper loom comprising a gripper body having a substantially U-shaped cross section including a base and two laterally spaced side walls, one of the side walls adapted to be closer to an associated loom reed, the laterally spaced side walls each having a forward vertical portion, wherein a forwardmost point of the forward vertical portion of the one of the side walls projecting more forwardly than the other of the forward vertical portions; a cover member located on the gripper body between the laterally spaced side walls, the cover having a forward tip located substantially between the forward vertical portions of the side walls, the forward tip having a height greater than the base of the gripper body and less than the forward vertical portions of the side walls; a gripping member for a weft yarn positioned on the base adjacent of the side walls; a guide and positioning groove for the weft yarn; a deflector for maintaining the weft yarn inclined within the giver gripper; wherein the c
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: October 13, 1998
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Giulio Bortoli, Luciano Corain
  • Patent number: 5813440
    Abstract: A gripper loom tape head including a base, comprising a gripper support crest attached to the tape head, the tape head having a plurality of through fixing holes flared towards the base of the tape head and arranged in two longitudinal rows on one and the other side of a longitudinal axis of the tape head, which comprises two flared holes, of greater diameter than the holes, on the longitudinal axis in proximity to the longitudinal ends of the crest, characterized in that the gripper support crest is prefabricated in any desired material, is provided with a series of through fixing holes in proximity to its lower end, is arranged along the longitudinal axis of the underlying tape head perpendicular to this latter and spaced therefrom by a certain gap, and is maintained in position for all or nearly all its length by a thermoplastic injection-molding material which surrounds most of the prefabricated crest and becomes inserted into the fixing holes of this latter, into the gap between the crest and the tape he
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: September 29, 1998
    Assignee: Nuovo Pignone S.P.A.
    Inventors: Giulio Bortoli, Luciano Corain
  • Patent number: 5628346
    Abstract: A device for measuring the warp yarn tension of a woven fabric in a loom, which includes a fixed deviation bar which extends across the entire loom width and cooperates with a device measuring warp yarn tension, the fixed deviation bar having a central or intermediate portion for the fabric under formation, the intermediate portion being of a length less than that of a minimum formable fabric width and being detached from the remaining sections of the bar by thin breaks in the deviation bar. The intermediate portion is supported via at least one load cell. The device is located in the loom to measure the tension of the fabric already woven and prior to its being wound on the winding beam.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: May 13, 1997
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Luciano Corain, Marco Novella, Roberto Spanevello
  • Patent number: 5615714
    Abstract: A guide system for a gripper insertion tape in a shuttleless loom which includes a sley with a reed, through the dents of which pass upper and lower warp yarns forming a shed, at least one insertion tape moving with reciprocating motion between the upper and lower warp yarns of the open shed, a gripper fixed to one end of the tape to convey a weft yarn through the shed, and a plurality of guide teeth fixed spaced apart on the sley and projecting through the lower warp yarns of the shed when the shed is open. The teeth are provided with a bearing and guiding surface for the insertion tape and for the gripper. The bearing and guiding surface of the teeth includes a convex surface which extends in the direction of the warp yarns. A control mechanism is also provided making guiding of the insertion tape and the gripper more effective during travel thereof within the shed.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: April 1, 1997
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Giulio Bortoli, Luciano Corain, Gianluigi Sora
  • Patent number: 5558133
    Abstract: A fill end catching/clamping system in a fill drive clamp body provided at one end with a hook. A wedge is designed to axially move inside the hook. A wall of the wedge cooperates with a wall of said hook to form a "V"-shaped hollow in which the fill end is clamped. At least one elastic blade, positioned below the wedge, has a side wall that cooperates with the wall of the hook which forms one side of the "V"-shaped hollow to assist in retaining the fill end or ends in the "V"-shaped hollow.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: September 24, 1996
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Giulio Bortoli, Luciano Corain
  • Patent number: 5483997
    Abstract: A shuttleless loom weft brake includes at least two braking units arranged in series in the weft yarn travel direction and operating mutually out of phase. Each unit formed from a vertically arranged elastic blade at least partly of ferromagnetic material and a flat support plate of non-magnetic material, between which the weft yarn is made to travel. The blade is fixed to the frame of the weft brake by the end which is closer to the feed bobbin and is preloaded in a direction urging it away from said support plate and against a respective stop pin. The blade is pressed against the support plate by the attraction of an at least one electromagnet of adjustable excitation.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 16, 1996
    Assignee: Nuovopignone - Industrie Meccaniche e Fonderia S.p.A.
    Inventors: Luciano Corain, Marco Novella, Giulio Bortoli
  • Patent number: 5477892
    Abstract: A device for continuously regulating the feeler sensitivity in the control of weft insertion in a loom. The device includes a selector having a memory into which the sensitivity value corresponding to the count of the weft passing through the eye of each rod is fed. The selector is electrically connected to a piezoelectric sensor-comparator, and is controlled by a logic control unit. The logic control unit provides electrical pulses or signals for selecting weft presenter rods of a presenter, and the same signal from the logic control unit is provided to the selector, such that the selector utilizes the signal from the logic control unit for providing the feeler sensitivity information to the sensor-comparator.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: December 26, 1995
    Assignee: Nuovopignone-Industrie Meccaniche E Fonderia S.p.A.
    Inventors: Luciano Corain, Ruggero Manzardo
  • Patent number: 5441084
    Abstract: A system for maintaining a constant terry height in forming a terry cloth despite loom stoppage, e.g., to correct yarn breakage. The system includes a proximity sensor which is positioned at a predetermined distance from a floating roller, and on the same side of the floating roller as a loading spring. The proximity sensor causes stoppage of an electric motor of the feed beam for the terry warp yarns which were previously driven in a forward direction by the electric control center. Upon sensing movement of the floating roller by a predetermined distance, the electrical control sensor causes motion inversion of the electric motor to reverse the movement of the feed beam for the terry warp yarns.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: August 15, 1995
    Assignee: Nuovopignone - Industrie Meccaniche E Fonderia S.p.A.
    Inventors: Luciano Corain, Ruggero Manzardo, Vittorio Apolloni
  • Patent number: 5439034
    Abstract: A mechanism for transmitting the selection command for a reed beating position in a terry loom, the terry loom including a connecting rod, one end of which is hinged to the common articulated joint of two pivoted arms by which the support body for the toothed sector mounted on the axis of rotation of the loom sley is hinged to the lower end of the sley, the other end being hinged to the end of the rocker lever. The other end is hinged so as to lie on the axis of rotation of the sley when said rocker lever rests against the fixed shoulder of the loom.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: August 8, 1995
    Assignee: Nuovopignone - Industrie Meccaniche E Fonderia S.p.A.
    Inventors: Luciano Corain, Lucio Sardella
  • Patent number: 5431195
    Abstract: A control system for a plurality of tuck-in selvedge forming devices in a loom having a variable reed beat-up position includes a main shaft, a drive shaft connected to all the tuck-in selvedge forming devices, a modulator driven by the main shaft and having an output shaft which pauses at least once during each revolution of the main shaft, as well as a coupling unit rotatable with the drive shaft and operative to be selectively rotatably coupled to the modulator output shaft so that the drive shaft is driven by the main shaft. The coupling unit includes a ring fixed to the drive shaft and a first cover pivoted to the ring so that a key can enter into the recess of the modulator output shaft to rotatably couple the coupling unit to the modulator output shaft during its pauses. A second lever is biased so as to follow contours of a control cam and prevent the first key from entering the recess of the modulator output shaft.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: July 11, 1995
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
    Inventors: Luciano Corain, Lucio Sardella, Costantino Vinciguerra
  • Patent number: 5419375
    Abstract: A loom with a leno-weaving device which can act completely within the loom heddle frames, with the two links of the leno-weaving device slidably supported within a slide guide. The slide guide extends from within the heddle frames, and is located above the reed, with the two links driven by a single cam drive and a pair of spring-loaded pushers. The spring-loaded pushers can extend into the heddle frames, and are connected to one end of the links, with the links thus raised and lowered within the heddle frames while being slidingly supported by the slide guide. An advantageous cam drive can also be provided which allows for switching of the mode of the operation, to switch the type of weaving being performed by axially moving a shaft upon which cams of the cam drive are mounted.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: May 30, 1995
    Assignee: Nuovopignone - Industrie Meccaniche e Fonderia S.p.A.
    Inventors: Luciano Corain, Giulio Bortoli
  • Patent number: 5386855
    Abstract: A device for automatically varying, during the transient states following loom stoppages, the shed vertex position in the loom. The device consists of a sensor for determining the beat-up pulse intensity of the loom reed. The device also is connected to a comparator which receives a predetermined set value corresponding to the beat-up pulse intensity of the reed during normal operation. The output of the comparator is used, through a control unit, to synchronously drive the electric motors that operate the beam and the take-up roller of the loom, respectively.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: February 7, 1995
    Assignee: Nuovopignone-Industrie Meccaniche E Fonderia SpA
    Inventors: Luciano Corain, Spanevello Roberto, Marco Novella
  • Patent number: 5355912
    Abstract: A device for automatically controlling the warp yarn tension in a loom in which the fixed deviation bar for the fabric under formation is supported only at its ends. A deformation sensor, moreover, is directly supported on the deviation bar. The deformation sensor is electrically connected to a comparator to which an adjustable set-value unit is also connected, the output of the comparator being used to drive the geared motor of the warp yarn feed beam to control the warp yarn tension.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: October 18, 1994
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia SpA
    Inventors: Luciano Corain, Roberto Spanevello, Marco Novella
  • Patent number: 5353845
    Abstract: A shuttleless loom in which that part of the reed traversed, by the false selvedge yarns and the binding yarns for the side edges of the fabric under formation is detached from the rest of the reed. The detached part is made easily removable from the loom sley, whereas the grids of the false selvedge formation device and of the binding device are mounted on two rigid frameworks. These frameworks are easily removed through a quickbreak connection from their supports, these being driven with opposing reciprocating movement within guides fixed to the loom.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: October 11, 1994
    Assignee: Nuovopignone-Industrie Mecaniche e Fonderia SpA
    Inventors: Luciano Corain, Gianni Maitan
  • Patent number: 5348057
    Abstract: A taker gripper for loom use, of the type in which a wedge moves axially within a hook. The weft to be drawn, and which is wedged into the narrow V recess formed on one side between the wedge and the hook, is also maintained elastically pressed against the shallow recess that is provided in the outer lower surface of the hook by an elastic blade. The elastic blade, moreover, is fixed by its rear end to the wedge or to the gripper body. The inner surface of the hook on the side opposite the side that comprises the narrow V recess is formed so that it diverges from the corresponding surface of the wedge and from the direction of wedge axial movement.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: September 20, 1994
    Assignee: Nuovopignone Industrie Meccahniche E Fonderia S.p.A.
    Inventors: Luciano Corain, Giulio Bortoli
  • Patent number: 5341852
    Abstract: A taker gripper for loom use in which the weft is gripped and clamped through the combined action of two weft gripping and clamping members. These members are arranged in series along the path of the weft within the gripper. One of the members is of the elastic type and the other member is of the wedge type.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: August 30, 1994
    Assignee: Nuovopignone Industrie Meccaniche e Fonderia SpA
    Inventors: Luciano Corain, Gianni Maitan, Giulio Bortoli
  • Patent number: 5246038
    Abstract: A mechanism for selecting the movement of the movable members of a tucked selvedge forming device. The device is suitable for operation on terry looms which comprise a feeler pivoted at one end to the device casing and cooperates via a spring with one of a plurality of cams for driving operating levers. This arrangement causes a bridge frame rigid with it to rock a position in which the bridge of the frame is interacting with stop teeth of the operating levers to a position in which there is no longer interaction and in which a metal armature rigid with the feeler rests against an electromagnet supported by the device casing.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: September 21, 1993
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia SpA
    Inventor: Luciano Corain