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Assignee: Zellweger Luwa AG


Location: CH
No. of patents: 21

NumberTitleIssue Date
6501086Method and device for evaluating defects in flat textile structures
The invention relates to a method and a device for evaluating defects in flat textile structures. To be able to provide a method and a device which permit the repeated and unambiguous evaluation of defects in flat textile structures, the invention provide...
12/31/2002
6430995Method and device for assessing yarn quality
The invention relates to a method and a device for evaluating the quality of a yarn (1). In order that further aspects of the quality of a yarn may be taken into consideration and explained by measured values so that the quality of a yarn is as a whole su...
08/13/2002
6412342Device for measuring properties of a textile product
The invention relates to a device for measuring properties of a textile test specimen in a measuring gap (2), in which the textile test specimen is introduced, the measuring gap being formed by two walls. In order to provide a device of the type described...
07/02/2002
6374152Method and device for clearing yarns
In a method and a device for clearing yarn, properties of the yarn are acquired and used to determine a yarn defect density profile. Yarn defects to be removed are defined by means of an adjustable clearing limit which is based on the density profile. In ...
04/16/2002
6100989Method and device for detecting defects in textile webs
The invention relates to a method and a device for detecting defects in textile webs. In order to rapidly adapt devices of this type to widely varying textile webs and to be able to operate such devices simply, brightness values are determined from the we...
08/08/2000
6072319Device for measuring properties of a textile product
The disclosure relates to a device for measuring properties of a textile product in a measuring gap in which the textile product is inserted. On each of its surfaces the measuring gap has an electrode of a measuring capacitor, between which the product is...
06/06/2000
6065333Device for monitoring a moving yarn
The invention relates to a device for monitoring a yarn (1), which is moving in its longitudinal direction, using a measuring head and an evaluation unit (7) which is spatially separate from and connected to the measuring head. To enable optimum use of me...
05/23/2000
6061127Device for registering parameters of an elongated test material
A device for registering parameters of an elongated test material that takes up little space, can be manufactured easily and is cost-effective includes a light source for illuminating at least one region of the test material. The light source is in the fo...
05/09/2000
6032335Apparatus for drawing a fibrous strand into an element of a textile machine
The invention relates device for drawing an elongated textile intermediate product (2), such as a staple fiber fleece or sliver, into a receiving element (3) of a textile machine station. In order to be able to take in, transport onwards and twist elongat...
03/07/2000
5956994Test apparatus for linear test material such as yarn or the like
The invention relates to a test apparatus (1) with an end face (11) in front of which a yarn, roving or sliver is moved along in the longitudinal direction in order to test properties, with a plurality of zones of action (8, 9, 10) for producing a respect...
09/28/1999
5926267Process and device for detecting extraneous substances and extraneous fibers in a fibrous composite
The invention relates to a process and a device for detecting extraneous substances and extraneous fibers in a fibrous composite. In order to detect extraneous substances and extraneous fibers, on the one hand when they may make their presence felt in a d...
07/20/1999
5872788Method and device for the transmission of data
A system is disclosed for the transmission of data between a central unit and at least one functional unit via lines where each functional unit is connected to at least one sensor or actuator. Each functional unit includes an output amplifier for the tran...
02/16/1999
5870890Method and apparatus for detecting the mass of fiber material in a spinning machine
The invention relates to a method and device for detecting the mass of fiber material (5) which is processed in a rotor spinning machine to form yarn. In order to obtain a measurement signal which is a function of the mass of fiber material and which can ...
02/16/1999
5834639Method and apparatus for determining causes of faults in yarns, rovings and slivers
The invention relates to a method and an apparatus for recording causes of faults in products, in which the faults are recorded and counted. The recorded faults are represented according to selected parameters, so that a fault pattern is obtained. From th...
11/10/1998
5587695Measuring transformer for solid-state electricity meters
The present invention relates to a measuring transformer which contains a primary conductor which carries current to be measured, and a secondary coil which is magnetically coupled thereto. The primary conductor is shaped helically and forms a body, like ...
12/24/1996
5530368Capacitive sensor for detecting fluctuations in the mass and/or diameter of elongated textile test material
A capacitive sensor has a pair of plate-shaped electrodes (4) spaced apart from one another and defining a measurement slot (3) therebetween. Guides (5) mask out edge zones of the measurement slot (3) and reduce its width. These guides (5) are formed as t...
06/25/1996
5511371System for increasing the production of spinning machines
The system includes a control system for deriving control variables from parameters which influence the productivity of the spinning machine (RS). Besides parameters which are measured by sensors, for the purposes of the control consideration is also give...
04/30/1996
5501100Device for measuring the mass of fiber slivers
A device for measuring the mass of fiber slivers contains an entry part for the fiber sliver to be measured and a measuring part adjoining the entry part. Arranged on the measuring part are two measuring members working on different measurement principles...
03/26/1996
5499546Method of measuring the mass of fiber slivers
A device for measuring the mass of fiber slivers contains an entry part for the fiber sliver to be measured and a measuring part adjoining the entry part. Arranged on the measuring part are two measuring members working on different measurement principles...
03/19/1996
5499794Process and device for detecting foreign substances in a textile test material using an alternating light and dark background
Test material (F) such as a textile yarn is illuminated and the light reflected from the test material is measured so that the presence of a foreign substance can be determined from a change in the reflected light. When detecting foreign substances which ...
03/19/1996
5497335System for creating a fault diagnosis on production machines and application of the system on textile machines
The creation of fault diagnosis takes place using a knowledge-based evaluation of signals which signal the quality of the products produced, for example using spectrograms obtained in the investigation of parameters of textile fiber or filament structures...
03/05/1996
 
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