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Class 28/241 - Control means responsive to sensed condition


Subclass of Class 28 - Textiles: manufacturing
Definition: Apparatus wherein means are provided which sense or perceive
No. of patents: 19
Last issue date: 02/16/1999


NumberTitleIssue Date
5870808Draw point control arrangement
An apparatus and method for processing a synthetic yarn includes at least a one sensor for generating a signal representative of the actual velocity of the yarn at a point intermediate an upstream and the downstream rolls. The temperature of the upstream ...
02/16/1999
5737815Method and apparatus for controlling a take-up point when texturizing a yarn
A method and apparatus for maintaining a yarn take-up point stationary. A first sensor, such as an optical sensor, is positioned proximate a first location of a yarn travel path to output a first signal representative of the position of a yarn at the firs...
04/14/1998
5664307Draw process
A draw process is described, in which yarns in particular of thermoplastic plastics are drawn by influencing their temperature, so as to improve the yarn properties. The process can be employed in a spin process or in a subsequent improvement step. In acc...
09/09/1997
5519924Heating apparatus for false twisting of synthetic fiber
A non-contact type high-temperature heating apparatus for false twisting of synthetic fiber to provide increased efficiency and energy savings. The apparatus includes a main body defined by a metal tube, and end walls connected to the main body. The main ...
05/28/1996
5349729Method to control drawing of a plurality of synthetic yarns
Method and apparatus to selectively treat adjacent yarns in draw machine to provide different characteristics in the synthetic yarn being drawn and beamed. The yarn running between the feed rolls and draw rolls is selectively blown upwardly away from the ...
09/27/1994
5110517Method for deregistering crimped multifilament tow
A method and apparatus for deregistering drawn crimped nylon multifilament tow includes the steps of stretching the tow under constant controlled tension at a temperature below the glass transition temperature of the nylon. The apparatus includes means fo...
05/05/1992
4669159Arrangement for the stretching and warping of warp threads
In an arrangement for the stretching and warping of thermoplastic warp threads, in particular polyester threads, there is provided an arrangement comprising a set of feeding rollers, a heating arrangement and a set of take-off rollers. The latter set of r...
06/02/1987
4611410Apparatus for the heat treatment of synthetic yarn
An apparatus for the heat treatment of synthetic yarn is provided where synthetic yarn is provided by a synthetic yarn source and is fed via rollers to a first heating surface and then via a heating pin to a second heating surface and from there via rolle...
09/16/1986
4608736Apparatus for manufacturing a bulky textured yarn
Apparatus for manufacturing a bulky textured yarn from a thermoplastic multifilament yarn by applying a pressurized heated fluid in a condition of automatically controlling the operating characters of the texturing operation. During the steady operational...
09/02/1986
4592119Air jet yarn entangling apparatus
An apparatus is disclosed for simultaneously air jet entangling a plurality of advancing multifilament yarns. The apparatus comprises a plurality of elongate air jet beams, with each beam having a longitudinal air passageway extending along its length, an...
06/03/1986
4525905Apparatus for beaming elastic threads
The arrangement can transfer with respect to a beam, elastic threads having a predetermined initial extension. The arrangement has a first device for imparting a first thread speed to the threads being transferred. Also included is a controller and at lea...
07/02/1985
4477398Yarn monitoring process
Disclosed is a method of moving a roll out of contact with a work-piece in response to its developing a slower speed than normal while being driven by frictional engagement with the work-piece which comprises (a) generating an electrical signal as the roll mov...
10/16/1984
4404718Apparatus for manufacturing a bulky textured yarn
Apparatus for manufacturing a bulky textured yarn from a thermoplastic multifilament yarn by applying a pressurized heated fluid in a condition of automatically controlling the operating parameters of the texturing operation. During the steady operational...
09/20/1983
4235000Method for straightening textured yarn
The temperature of a heating fluid used in a yarn crimping zone is controlled in response to whether a yarn plug is detected at a predetermined point, and in another embodiment a fluid is heated, passed to a yarn heating zone and a yarn is heated in the z...
11/25/1980
4122588Yarn processing apparatus
A straightened, textured yarn is produced employing an apparatus comprising a crimping means, an entangling means and a heating and tensioning means which heats and applies tension to the crimped and entangled yarn prior to packaging....
10/31/1978
4095318Controlled tow stretcher
This is an improved apparatus for stretching a tow of filaments by the tension caused by driven rolls dragging the tow across drag rolls. The improvement comprises continuously controlling at least one undriven or drag roll proportional to the sensed vari...
06/20/1978
4043718Spinning apparatus with retractable suction gun
In a spinning apparatus for producing synthetic threads providing with at least one spinning unit comprising a spinneret, a spinning duct disposed below the spinneret and a take-up device mounted on a base floor below the spinning duct, wherein a work spa...
08/23/1977
4035880Apparatus for drawing and crimping yarn
In combination, a drawing apparatus and a crimping apparatus. The drawing apparatus comprises integral first and second draw rolls, with attendant separator rolls, and a draw pin. The final draw roll is fluted around its peripheral surface. The draw rolls...
07/19/1977
3930292Devices for threading filaments on rollers
Filament processing apparatus embodying the combination of one or more rotatable rollers for conveying a filament or a plurality of filaments axially spaced on said roller(s) and looped at least partially about the respective roller surfaces, and a tubula...
01/06/1976
 
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