Textiles: fiber preparation – Working – Fluid or special treatment
Reexamination Certificate
2005-06-21
2005-06-21
Welch, Gary L. (Department: 3765)
Textiles: fiber preparation
Working
Fluid or special treatment
C019S105000
Reexamination Certificate
active
06907644
ABSTRACT:
Automatic modification of volumetric air flow in an apparatus for pneumatically feeding a spinning preparation machine, by means of fiber-flock charging shafts located upstream of individual spinning preparation machines and connected to a pneumatic fiber-transporting line, the transporting line connected by way of a fiber material feed fan to the fiber-processing machine upstream.A set of characteristic curves describing air flow is stored in a characteristic curve set element; a measurement signal for the pressure difference at the fan and values relating to rotation of the fan are ascertained in a computer unit. The computer unit determines value of the volumetric air flow from the characteristic curves. In the event of departure from a desired value for the volumetric air flow, the operating point for the speed of rotation of the fan is displaced to the desired value.
REFERENCES:
patent: 4240180 (1980-12-01), Wood et al.
patent: 4353667 (1982-10-01), Mandl et al.
patent: 4404710 (1983-09-01), Wood
patent: 4701981 (1987-10-01), Leifeld
patent: 4779311 (1988-10-01), Leifeld
patent: 4940367 (1990-07-01), Stäheli et al.
patent: 5143485 (1992-09-01), Faas et al.
patent: 5247722 (1993-09-01), Leifeld
patent: 2002/0124354 (2002-09-01), Pferdmenges et al.
patent: 34 42 942 (1986-05-01), None
patent: 38 55 311 (1996-12-01), None
patent: 198 12 437 (1999-09-01), None
patent: 299 14 892 (2000-02-01), None
patent: 201 02 245 (2001-05-01), None
patent: 100 35 829 (2002-07-01), None
patent: 0 303 023 (1989-02-01), None
patent: 2 169 322 (1986-07-01), None
Kinberg Robert
Trutzschler GmbH & Co. KG
Venable LLP
Welch Gary L.
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