Patents by Inventor Ernst Dieter Plath

Ernst Dieter Plath 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: 6735987
    Abstract: The invention relates to a circular knitting machine with knitting needles (4) and sinkers (25) for the production of plush fabrics. Each of a plurality of knitting systems has a means (71) for controlling the knitting needles (4) into a knock-over position and pattern devices arranged in front of this means (71). According to the invention, a first pattern device provided with a ground-thread guide (38) serves for selectively controlling the knitting needles (4) into a knitting or tucking position intended for the pick-up of ground thread (39) or a non-knitting position intended for the non-pick-up of ground thread (39). A second pattern device provided with a plush-thread guide (40) serves for selectively controlling the knitting needles (4) into a pick-up position intended for the pick-up of plush thread (41) or an intermediate position intended for the non-pick-up of plush thread (41).
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: May 18, 2004
    Assignee: SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbH
    Inventors: Ernst-Dieter Plath, Erich Bizer
  • Patent number: 6609398
    Abstract: The invention describes a compound needle having a needle part (3) and a slide part (4) for knitting, warp knitting or hosiery machines. The needle part (3) has a needle shaft (3a) and a needle hook (3b), the needle shaft (3a) being provided with a slot-shaped recess (3f) and a guide channel. The slide part has a slide shaft (4a), which is insertable into the guide channel and is movable to and fro in the latter, and a slide hook (4b) which is open in the opposite direction to the needle hook (3b), said slide hook being insertable into the recess (3f) in order to take over a stitch (9) located on the needle shaft (3a).
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 26, 2003
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Publication number: 20030154747
    Abstract: The invention relates to a circular knitting machine with knitting needles (4) and sinkers (25) for the production of plush fabrics. Each of a plurality of knitting systems has a means (71) for controlling the knitting needles (4) into a knock-over position and pattern devices arranged in front of this means (71). According to the invention, a first pattern device provided with a ground-thread guide (38) serves for selectively controlling the knitting needles (4) into a knitting or tucking position intended for the pick-up of ground thread (39) or a non-knitting position intended for the non-pick-up of ground thread (39). A second pattern device provided with a plush-thread guide (40) serves for selectively controlling the knitting needles (4) into a pick-up position intended for the pick-up of plush thread (41) or an intermediate position intended for the non-pick-up of plush thread (41).
    Type: Application
    Filed: February 14, 2003
    Publication date: August 21, 2003
    Inventors: Ernst-Dieter Plath, Erich Bizer
  • Publication number: 20030121292
    Abstract: The invention describes a compound needle having a needle part (3) and a slide part (4) for knitting, warp knitting or hosiery machines. The needle part (3) has a needle shaft (3a) and a needle hook (3b), the needle shaft (3a) being provided with a slot-shaped recess (3f) and a guide channel. The slide part has a slide shaft (4a), which is insertable into the guide channel and is movable to and fro in the latter, and a slide hook (4b) which is open in the opposite direction to the needle hook (3b), said slide hook being insertable into the recess (3f) in order to take over a stitch (9) located on the needle shaft (3a).
    Type: Application
    Filed: December 18, 2002
    Publication date: July 3, 2003
    Inventor: Ernst-Dieter Plath
  • Patent number: 6296585
    Abstract: A driving roller with an outer working periphery having a changeable diameter has a first disk and a second disk arranged coaxially with one another and returnable relative to one another in any operational condition, the first disk being provided with a plurality of radial guides, the second disk being provided with at least one spiral-shaped guide, a plurality of supporting bodies which for abutment of segments provided for the drive belts have a first element cooperating with the radial drives and a second element cooperating with the at least one spiral shaped guide and are supported with these elements so that by a relative turning of the disks an increase or a reduction of the diameter of the working periphery is provided, the radial guides being formed by guiding slots extending through the first disk, the first element being composed of guiding members which are slidingly guided in the guiding slots, the guiding members at both sides of the first disk being provided with guiding webs which laterally e
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: October 2, 2001
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6233979
    Abstract: A circular knitting machine is described whose components can be adjusted to meet an order with the aid of adjustment data sets stored in a data memory and which relate to a predetermined knitting structure, yarn type, yarn thickness and quality of the knitwear to be produced and preferably arise from knitting processes already carried out on the circular knitting machine. A basic adjustment is preferably first effected on the basis of the adjustment data and can be followed by a fine adjustment with a central adjusting device for the loop size, until the desired quality is attained. (FIG. 1).
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: May 22, 2001
    Assignee: Sipra Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6151921
    Abstract: A circular knitting machine comprises a needle cylinder (2) and/or a dial (4) and a cam system (6, 7) associated therewith, said cam system having adjustable cam system parts (32, 33), which are preferably adjustable by rotatable eccentric studs (38) associated therewith. The circular knitting machine moreover comprises in accordance with the invention a setting device (48) which includes actuating members (58) for the eccentric pins (38), wherein the actuating members (58) and the eccentric pins (38) are provided with coupling elements (39, 72), which can be brought into engagement with one another in a defined coupling position. The setting of the cam system parts (32, 33) is effected in that the actuating members (58) are moved suitably after arrangement of the coupling position. The invention further relates to a setting device for this purpose, which can be attached removably to the circular knitting machine. (FIG. 4).
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: November 28, 2000
    Assignee: Sipra Patententwicklungs - U. Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6151924
    Abstract: A yarn delivery device for a textile machine has at least one yarn delivery roller, and a drive device for a propulsion of the delivery roller, the drive device including a drive belt, a drive roller with a peripheral section alterable in diameter and at least in part in part looped around by the drive belt, and a tensioning unit with a guide member acting on the drive belt, the tensioning unit including a controller for producing at least one larger belt tension for normal operation of the delivery roller and a smaller belt tension for alteration of the diameter of the peripheral section of the drive roller.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: November 28, 2000
    Assignee: Sipra Patententwicklungs- U. Beteiligungsgesellschaft mbH
    Inventors: Ernst-Dieter Plath, Stefan Seeger
  • Patent number: 6145347
    Abstract: A thread supplying device with intermittent thread consumption has at least one thread supplying unit including a rotatable thread supplying drum and a thread supplying device. The thread supplying drum has a first and a second peripheral portion forming corresponding friction surfaces for a thread to be supplied. The thread supplying device has an inlet element associated with the first peripheral portion and an outlet element associated with the second peripheral portion, and also has two movable guiding elements for the thread and associated with the peripheral portions. The thread is guided by the guiding elements between the inlet and the outlet element and cooperates successively with the first and the second peripheral portion and placed on an associated one of the peripheral portions in a supplying position of the guiding elements along a greater peripheral angle than in a non supplying position of the guiding elements.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: November 14, 2000
    Assignee: SIPRA Patententwicklungs- u. Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6141994
    Abstract: A knitting machine comprises at least one knitting implement carrier (1) having tricks (10) and knitting implements (8) slidably mounted therein, a cam system for guiding the knitting implements (8) in pass or raise tracks (15, 16), control jacks (9) formed as two-armed levers associated with the knitting implements (8), which jacks have controllable raising butts (21) and armature surfaces and are mounted freely pivotable in tricks (10) of the carrier (1), springs (26) bearing on the trick bottoms for biasing the control jacks (9) and at least one selector station with a control magnet (25) and a presser cam system part (24) for so turning the control jacks (9) that their armature surfaces are applied to the control magnet (25) and are then selectively held or released from this.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: November 7, 2000
    Assignee: SIPRA Patententwicklungs- u. Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6131417
    Abstract: A circular knitting machine has a knitting frame, a supporting ring mounted on the machine frame, a needle cylinder supported on the supporting ring. The needle cylinder has a needle cylinder axis and an upper and a lower edge. A carrier shaft is mounted in the machine frame coaxial to the needle axis, a component is mounted on a lower end of the carrier shaft, and a device is provided for moving the needle cylinder relative to the component in the direction of the needle carrier axis so that the needle cylinder can be disassembled or assembled by motions substantially perpendicular to the needle cylinder axis and so that the needle cylinder is movable into an operating position and an assembly position allowing assembly and/or disassembly.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: October 17, 2000
    Assignee: Sipra Patententwicklungs-U. Beteiligungsgesellschaft mbH
    Inventors: Ernst-Dieter Plath, Stefan Seeger, Dietmar Trankle, Kurt Juntner
  • Patent number: 6119492
    Abstract: A knitting machine contains at least one knitting tool carrier for knitting tools (9) with a needle distance t, an associated knitting cam assembly (12, 13), the carrier and the knitting cam assembly being moveable relative to one another and the knitting cam assembly containing a plurality of systems (I, II) lying one behind the other in the direction of movement (v) which systems having respectively a first and a second selection point, lying one behind the other in the direction of movement (v), with one electrically controllable selection member (44, 52), a timing signal-generating device (56, 60) for producing timing signals and a programme control device (53) for producing electric control signals for the control members (44, 52).
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: September 19, 2000
    Assignee: Sipra Patententwicklungs - U. Beteiligungsellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6089491
    Abstract: A yarn delivery device has a casing, a delivery drum rotatably mounted on the casing, a drive belt, at least one drive wheel propelling the delivery drum, the drive wheel having a peripheral section for application of the drive belt and being provided with at least one cleaning channel extending in a peripheral direction, and at least one scrapper attached to the casing and projecting at a point of a peripheral section remaining free of the drive belt into the cleaning channel.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: July 18, 2000
    Assignee: Sipra Patententwicklungs - U. Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6065711
    Abstract: A yarn brake has a bearing pin, two brake elements for braking a yarn, the brake elements being mounted on the bearing pin for being rotated by the yarn in friction engagement with the brake elements when the yarn is consumed, at least one of the brake elements being axially movable on the bearing pin, a bias mechanism holding the two brake elements in abutment, and a support, the bearing pin being freely rotatable in the support by the brake elements during use of the yarn brake.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: May 23, 2000
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6053015
    Abstract: A control jack for a knitting machine has at least one selector device for knitting implements, having a front side, a rear side, a first lower lever arm having a controllable raising butt and an armature surface, a second upper lever arm having a rocking butt, and a spring arranged on the rear side for biasing the second lever arm, wherein the arms are arranged on opposite sides of a bearing point and wherein the controllable raising butt, the rocking butt and the armature surface are formed on the front side.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: April 25, 2000
    Assignee: Sipra Patententwicklungs- u. Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 6000245
    Abstract: The invention relates to a yarn changer for knitting machines, with swinging yarn fingers (22c, 22d), which comprise finger bodies and guide bodies (66c, 66d) having cutting and clamping elements (69, 71) slidable on the finger bodies, and with an opener (121) and closer (122) both associated with all yarn fingers in common. In order to reduce the number of moving parts and the noise occurring in operation of the yarn changer, the opener (121) and closer (122) are in such operative connection through a reverse-coupling mechanism (114-120) that they can be actuated in common by an associated cam track (102) acting on a control member (114). The control member (114) is preferably only in the working range of the cam track (102) when a yarn change is to be effected. The invention moreover concerns a knitting machine equipped with the yarn changer, especially a rib circular knitting machine, in which a yarn catcher cooperating with the yarn changer is built into the dial.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: December 14, 1999
    Assignee: SIPRA Patententwicklugs-und Beteiligungsgesellschaft
    Inventors: Ernst-Dieter Plath, Harald Rehmann
  • Patent number: 5943883
    Abstract: A circular knitting machine for knitting patterned knitted fabrics (19) contains a preferably rotatable needle carrier (1) having knitting needles (3) distributed along a needle ring, selection devices (6) for selection of the knitting needles (3) in accordance with the pattern, a plurality of yarn guides (17) attached to the selection devices (6) to feed yarns (18) to the knitting needles (3), whereby these yarn guides (17) are arranged so that the yarns (18) are picked up by selected knitting needles (3) and tied into the knitted fabric (19) but passed over by non-selected knitting needles (3) with the formation of yarn floats, and at least one cutting device located within the needle ring for cutting through yarn floats of a given minimum length such that yarn ends on the fabric side and the yarn guide side are formed and the yarn ends on the yarn guide side remain in a position in the catchment area of the selected knitting needles that intersects with the needle ring.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: August 31, 1999
    Assignee: Sipra Patententwicklungs u. Beteiligungsgesellschaft mbH
    Inventors: Ernst-Dieter Plath, Peter Rehm, Dietmar Trankle, Gero Schindler, Paul Neher
  • Patent number: 5826446
    Abstract: The invention relates to a yarn changer for knitting machines, with swinging yarn fingers (22c, 22d), which comprise finger bodies and guide bodies (66c, 66d) having cutting and clamping elements (69, 71) slidable on the finger bodies, and with an opener (121) and closer (122) both associated with all yarn fingers in common. In order to reduce the number of moving parts and the noise occurring in operation of the yarn changer, the opener (121) and closer (122) are in such operative connection through a reverse-coupling mechanism (114-120) that they can be actuated in common by an associated cam track (102) acting on a control member (114). The control member (114) is preferably only in the working range of the cam track (102) when a yarn change is to be effected. The invention moreover concerns a knitting machine equipped with the yarn changer, especially a rib circular knitting machine, in which a yarn catcher cooperating with the yarn changer is built into the dial.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: October 27, 1998
    Assignee: SPIRA Patententwiklungs-und Beteiligungsgesellschaft mbH
    Inventors: Ernst-Dieter Plath, Harald Rehmann
  • Patent number: 5791162
    Abstract: The invention relates to a method, a knitting machine and sinkers (1, 2) for producing plush fabrics. The method is distinguished in that core and plush thread loops (48, 54) are preformed on selected sinker edges and are transferred prior to the actual stitch formation from these sinker edges to other preselected sinker edges by simple displacement of the sinkers (1, 2). For this purpose the knitting machine has first and second sinkers (1, 2), wherein the second sinkers (2) are provided with oblique faces (15). These are used, in the course of the transfer of the core thread loops (48) by means of retracting the first sinkers (1) and simultaneous advancement of the second sinkers (2), to act on the core thread loops (48) in such a way that the latter are securely enclosed in the slits of the first sinkers (1) when these are again advanced (FIG. 10).
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: August 11, 1998
    Assignee: SIPRA Patententwicklungs- u. Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath
  • Patent number: 5417086
    Abstract: A lock arrangement for a knitting machine, which comprises knitting implements (3, 3a) mounted to slide in a longitudinal direction (w), with working and control butts (6, 6a; 7, 7a). The lock arrangement (8) includes a take-down lock part (61) associated with the control butts (7, 7a), slidable in the longitudinal direction (w) and each adjustable into an advanced and a retracted position, these lock parts being provided with raising cams (43, 46) running obliquely to the longitudinal direction (w), arranged one after the other and raising the knitting implements (3, 3a) into a tuck position or a knit position, as well as with hold-down cams (42, 45) running transverse to the longitudinal direction (w). In accordance with the invention the slidable lock parts (10, 10a; 11, 11a) are so constructed and arranged that selected raising cams act in their retracted position on the control butts (7, 7a) and selected hold-down cams (42, 45) act in their advanced position on the control butts (7, 7a ). (FIG. 8).
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: May 23, 1995
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Ernst-Dieter Plath