Patents Assigned to LTG Lufttechnische GmbH
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Patent number: 5819520Abstract: A ventilation system for a textile machine, including a separation element functioning as an air filter, for shielding an air blast generated by at least one spindle of a row of spindles supported on a spindle table of the textile machine.Type: GrantFiled: January 11, 1995Date of Patent: October 13, 1998Assignee: LTG Lufttechnische GmbHInventor: Klaus Gunther
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Patent number: 5690165Abstract: The invention relates to a ventilation device. Provision is made that the air propulsion plant (20) conveys at least a portion of the air in an air circulating mode by means of at least one variable volume chamber (6) in a pulsating manner at a very low frequency, with the chamber being connected to the room (2) by at least one air passage (21).Type: GrantFiled: July 27, 1995Date of Patent: November 25, 1997Assignee: LTG Lufttechnische GmbHInventors: Hans-Werner Roth, Andreas Bollinger, Gerd-Eugen Schaal, Claus Handel
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Patent number: 5683512Abstract: A varnishing machine having an arrangement for adjusting pressure between the varnishing and pressure cylinders and for compensating changes in rotational speed of the varnishing cylinder caused by soaking of the varnishing cylinder shell and/or regrinding of the varnishing cylinder, with the arrangement including two auxiliary side members for supporting the varnishing cylinder or pressure cylinder, two motor spindles for pivoting the two side members, respectively, pressure sensors for sensing the axial pressures applied by the two-motor spindles, a pressure regulator for controlling the applied pressures and thereby the pressure between the varnishing and pressure cylinders, and displacement sensor for sensing an angular position of one of the side members, the position signal generated by the displacement sensor being used as a control variable for controlling the rotational speed of the varnishing cylinder.Type: GrantFiled: April 8, 1996Date of Patent: November 4, 1997Assignee: LTG Lufttechnische GmbHInventor: Udo Mailander
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Patent number: 5647889Abstract: An air handling apparatus for use with textile machines is provided to separately filter usable fiber material and waste fiber material without adversely interrupting operation of the textile machine. The apparatus includes a common vacuum system which is configured for drawing first and second independent airstreams from the textile machines. A filtering system is in pneumatic communication with the common vacuum system. The filtering system comprises filtering devices for separately filtering the first and second airstreams in a first configuration and for combining and commonly filtering the first and second airstreams in a second configuration. The apparatus includes a control device which is configured to automatically shift the filtering system between the first and second configurations.Type: GrantFiled: June 28, 1994Date of Patent: July 15, 1997Assignee: LTG Lufttechnische GmbHInventor: Helmut Stueble
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Patent number: 5624020Abstract: A device for linearly conveying sheet-like products, fed with a first speed, to a delivery conveyor or an apparatus having a second speed different from the first speed including a conveying surface provided with suction openings for applying vacuum to the conveying surface for retaining the sheet-like products thereon, and control unit for changing a displacement speed of the conveying surface from the first speed to the second speed and, thereafter, from the second speed to the first speed.Type: GrantFiled: May 24, 1995Date of Patent: April 29, 1997Assignee: LTG Lufttechnische GmbHInventors: Bernhard Mokler, Stephan Gericke
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Patent number: 5595282Abstract: An article treatment apparatus including at least one treatment zone, and a conveyor for conveying articles through the treatment zone, with the conveyor having an air-permeable conveyor belt displaceable along a support provided with a plurality of vacuum openings along a longitudinal extent of the support, and formed of at least two conveyor sections abutting each other, with an operational cross-section of vacuum openings beneath a support area for a conveyed article, which is located at least partially in a joint region, defined by the two sections, being larger than an operational cross-section of vacuum openings beneath a support area for the article, which is located in a region of the conveyor section other than the joint region.Type: GrantFiled: December 28, 1994Date of Patent: January 21, 1997Assignee: LTG Lufttechnische GmbHInventor: Bernhard Mokler
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Patent number: 5579893Abstract: A transfer device for products, in particular aluminum cans, conveyed by a first transport system, which are transferred from the first transport system in groups in the form of a row aligned in the first transporting direction to a second transport system, wherein the placement of the products on the second transport system takes place in such a way that the row extends transversely in respect to its transporting direction. The transfer device includes a pickup mechanism holding the respective group of products during the transfer movement, the pickup mechanism being guided along a movement track by at least one drive linkage, wherein the drive linkage has a first arm which is pivotably connected at one end to a first shaft on the pickup mechanism and by its other end is pivotably connected to a second shaft on a rotating drive crank, and with a second arm, which is pivotably connected to a third shaft on the first arm and is pivotably connected to a fourth shaft, which is a fixed shaft.Type: GrantFiled: June 8, 1995Date of Patent: December 3, 1996Assignee: LTG Lufttechnische GmbHInventor: Bernhard Mokler
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Patent number: 5564334Abstract: A pin oven for curing a decorative or other coating laid down by a rotary decorator on cans has an associated transfer device by which the cans are decelerated and transferred in succession from the decorator onto the chain of the oven. The chain carries two cows of pins which are arranged in staggered and offset relation. By operating at a smaller chain circulating speed than the can output velocity of the decorator, the oven provides benefits in the size and thermal efficiency of the oven and reduced chain wear.Type: GrantFiled: December 27, 1993Date of Patent: October 15, 1996Assignee: LTG Lufttechnische GmbHInventor: David J. Burke
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Patent number: 5497628Abstract: The invention relates to an air-conditioning process and device, in particular to humidify and/or temper air which is fed in the form of an air stream to a humidification zone, whereby cooled water is sprayed into the airstream as a function of the conditioning parameters to be met. It is provided that to convey the air, the air stream is blown through the humidification zone, tempered water for adiabatic conditioning and cooled water can be sprayed in, and to influence the conditioning parameters, a control and/or regulation of the arrival of tempered and/or cooled water is carried out.Type: GrantFiled: July 29, 1994Date of Patent: March 12, 1996Assignee: LTG Lufttechnische GmbHInventor: Helmut Stueble
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Patent number: 5279629Abstract: An air handling and filtering system is provided for with conventional textile machines. The apparatus includes a common vacuum system for drawing first and second independent airstreams through the textile machines. A filtering system operates with the vacuum system to filter the useful white waste fiber material from all of the first airstreams. Individual filtering devices are provided for each textile machine and are housed in end-housing units disposed as one end of the textile machine. The individual filtering devices filter generally waste fiber material from the second airstreams drawn through the textile machines. The individual filtering devices can be isolated from the common vacuum system so that the individual waste fiber filters can be cleaned without stopping or otherwise affecting the critical first airstream so as not to detrimentally affect yarn formation at the spinning stations of the textile machines.Type: GrantFiled: February 26, 1993Date of Patent: January 18, 1994Assignee: LTG Lufttechnische GmbHInventor: Helmut Stueble
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Patent number: 5114444Abstract: A filter arrangement includes at least one drum-type filter. A suction device is provided for suctioning of the inside of the drum-type filter along a helical line. The suction device includes at least one suction hose and a suction nozzle provided at the free end of the suction hose. The suction nozzle is constructed for contacting the inner side of the drum-type filter. The suction hose is attached to an end portion of a rotatable suction pipe. The end portion is constructed so as to be movable back and forth in longitudinal direction of the drum-type filter, so that movement in longitudinal direction and rotary movement of the end portion of the suction pipe results in a suctioning-off of the cylindrical inner side of the drum-type filter along a helical line.Type: GrantFiled: December 13, 1990Date of Patent: May 19, 1992Assignee: LTG Lufttechnische GmbHInventor: Helmut Stuble
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Patent number: 4904282Abstract: An apparatus for filtering air containing textile impurities, comprises an air-permeable, fixed collecting device preferably of accordion shape, for separating the textile impurities. The collecting device has a number of filtering portions which can be cleaned by at least one suction device.Type: GrantFiled: June 15, 1988Date of Patent: February 27, 1990Assignee: LTG Lufttechnische GmbHInventors: Helmut Stuble, Heinz Burkhardt, Josef Velinsky
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Patent number: 4217119Abstract: An air filtering system for large installations such as spinning machine rooms, textile factories, etc., has a rotating drum with permeable walls through which air is aspirated to the interior of the drum while the accumulated contaminants are removed during the rotation of the drum by a reciprocating vacuum cleaner. In order to protect the bearings of the drum and the drive mechanism from contact with uncleaned air, the drum is carried by rollers which contact only the interior surface of the drum. The drive motor and transmission are also placed inside the drum.Type: GrantFiled: May 16, 1978Date of Patent: August 12, 1980Assignee: LTG Lufttechnische GmbHInventor: Joachim Furstenberg
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Patent number: 4200441Abstract: A heat exchanger of the regenerative type comprising a rotor constructed of corrugated strip layers providing transverse channels extending therethrough. The device is arranged to have separate gas streams directed through different parts of the rotor so that on rotation of the rotor the storage mass effects the exchange of sensible heat between the streams.Type: GrantFiled: June 29, 1977Date of Patent: April 29, 1980Assignee: LTG Lufttechnische GmbHInventors: Winfried Honmann, Gerd E. Schaal
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Patent number: 4193779Abstract: An apparatus which serves to clean air containing fine dust and also larger particles, such as fibrous material, thread ends, etc., which are produced in an industrial environment, especially a textile plant. In order to conduct a two-stage cleaning process without the necessity of dimensioning two filtering stages for the full air flow, there is provided a vortex chamber into which the unclean air is admitted tangentially or in some manner which produces a rotary flow with centrifugal force components which act on the larger particles in the air stream. The vortex chamber includes a rotating filter drum, the interior of which may preferably be provided with suction, causing air to flow from the vortex chamber through the filter, depositing thereon the fine dust carried by the incoming air.Type: GrantFiled: August 11, 1978Date of Patent: March 18, 1980Assignee: LTG Lufttechnische GmbHInventor: Dietmar Hencke
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Patent number: 4180390Abstract: The air used in the various operations of a general textile machine is cleaned prior to being returned to the factory space containing the machine by two sequential mechanisms, the first of which is a fiber separator which removes from the air relatively large contaminants such as fibers, pieces of thread, etc., and which transports these remnants to an outlet trap via a rotating conveyor screw. The second mechanism is a dust separator including at least one dust filter bag through which air is forced to pass inwardly, thereby trapping airborne dust on the surfaces of the filter. The accumulated dust on the filter is removed by periodic application of compressed air to the interior of the dust filter bag.Type: GrantFiled: May 4, 1978Date of Patent: December 25, 1979Assignee: LTG Lufttechnische GmbHInventor: Joachim Furstenberg
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Patent number: 4162148Abstract: A filtering apparatus for the filtering of fibers and equivalent material from flowing air, and in particular for use in textile operations, has been invented in which the fiber material is firmly compacted so that as much fiber material as possible may be accommodated in a given volume of a collecting container attached to the filtering apparatus. For this purpose the filtering apparatus has a hollow fiber filtering assembly into which the flowing air is guided, a conveyor screw and a motor to drive the conveyor screw toward an outlet of the filtering assembly. The filtering assembly also includes at least one filter, with the outlet located downstream in the direction of movement of the fiber material, and at least one braking component located near the outlet which serves to brake the motion of the fiber material induced by the conveyor screw and to compact the fiber material firmly.Type: GrantFiled: February 6, 1978Date of Patent: July 24, 1979Assignee: LTG Lufttechnische GmbHInventor: Joachim Furstenberg
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Patent number: 4134745Abstract: An air cleaning apparatus for purifying the air in machine rooms, etc., has a filter box and a primary air conveyor therein. When dust and impurities have accumulated on the upstream side of the filter, the normal clean air outlet is closed and the clean air stream is re-directed back onto the filter, thereby tending to dislodge the mat of impurities adhering to the other side. At the same time, a second air conveyor is activated to aspirate air at least partly from the interior of the filter box, thereby carrying along the dislodged mat of impurities for disposal downstream of the second air conveyor.Type: GrantFiled: January 12, 1977Date of Patent: January 16, 1979Assignee: LTG Lufttechnische GmbHInventor: Joachim Furstenberg
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Patent number: 4107910Abstract: A double twisting machine is equipped with air flow control devices which create preferred conditions in the vicinity of each twisting station and, particularly, in the immediate vicinity of the twisting mechanism and the thread balloons. Pre-conditioned air, adjusted for temperature and humidity, is delivered through a nozzle located above each twisting spindle and is directed generally to the location of the thread guide loop. The protective container for the bobbin has a lower opening which permits the air flowing into the container from the top to emerge below where an exhaust conduit carries it away. A coaxial shroud surrounds the protective container and forms an annular air passage through which conditioned air may flow in both directions.Type: GrantFiled: October 4, 1976Date of Patent: August 22, 1978Assignee: LTG Lufttechnische GmbHInventors: Joachim Furstenberg, Dietmar Hencke
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Patent number: 3998039Abstract: A method for open-end spinning according to which discrete fibers are fed into the interior of a rotor located in a spinning chamber and deposited in a fiber groove of the rotor. The fibers are thereafter drawn out of the spinning chamber as twisted fibers formed into a thread. The air which flows into the interior of the rotor is evacuated from the spinning chamber by suction.The apparatus of the invention is arranged so that the spinning chamber has at least one air outlet opening through which air flowing into the interior of the rotor leaves the spinning chamber. The outlet is located in the cover portion of a housing and is connected to an air suction device by at least one air channel.Type: GrantFiled: December 7, 1971Date of Patent: December 21, 1976Assignee: LTG Lufttechnische GmbHInventor: Joachim Furstenberg