Optics: measuring and testing – By monitoring of webs or thread
Reexamination Certificate
2005-10-06
2008-01-29
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
By monitoring of webs or thread
C356S430000
Reexamination Certificate
active
07324201
ABSTRACT:
A yarn sensor for textile spinning and bobbin-winding machines for optically scanning a longitudinally traveling yarn (3) within a measurement gap (19), particularly for detecting extraneous fibers, includes a light source (20), a first receiver (23) for directly transmitted light, two further receivers (21, 22) for light reflected from the yarn (3), and light transmitting elements (24, 25, 26, 27) between the light source (20), measurement gap (19) and receivers (21, 22, 23). In the absence of the yarn (3), the receivers (21, 22) detect projected images of the opposite wall (62) of the measurement gap (19), located essentially outside both sides of the area of the wall (62) of the measurement gap (19) illuminated by the direct radiation of the light-emitting diode (20). As a result, parasitic signals are suppressed, improving the detection of extraneous fibers.
REFERENCES:
patent: 2327257 (1943-08-01), Gary et al.
patent: 3461299 (1969-08-01), Felix
patent: 3712743 (1973-01-01), Harris et al.
patent: 4739176 (1988-04-01), Allen et al.
patent: 4815833 (1989-03-01), Zobel et al.
patent: 4948260 (1990-08-01), Felix et al.
patent: 5054317 (1991-10-01), Laubscher
patent: 5377967 (1995-01-01), Eberle
patent: 5414520 (1995-05-01), Joss et al.
patent: 5421529 (1995-06-01), Hans
patent: 5499794 (1996-03-01), Aeppli
patent: 5724150 (1998-03-01), Schaede et al.
patent: 5768938 (1998-06-01), Schilling et al.
patent: 5867309 (1999-02-01), Spink et al.
patent: 6175408 (2001-01-01), Henze et al.
patent: 6499345 (2002-12-01), Bucher et al.
patent: 6744498 (2004-06-01), Henze et al.
patent: 2003/0070481 (2003-04-01), Birlem
patent: 2004/0032205 (2004-02-01), Hack et al.
patent: 2005/0083521 (2005-04-01), Kamerman
patent: 2006/0098201 (2006-05-01), Birlem
patent: 101 50 581 (2003-04-01), None
patent: 0 197 763 (1986-10-01), None
patent: 0 213 587 (1987-03-01), None
patent: 0 401 600 (1990-12-01), None
patent: 0 553 455 (1993-08-01), None
patent: 0 571 591 (1993-12-01), None
patent: 0 572 592 (1993-12-01), None
patent: 0 761 585 (1997-03-01), None
patent: 1 018 645 (2000-07-01), None
patent: 1 100 742 (2001-05-01), None
patent: 1 143 236 (2001-10-01), None
patent: WO 93/19359 (1993-09-01), None
Sparavigna, A. et al. “Beyond capacitive systems with optical measurements for yarn evenness evaluation”, Mechatronics 14 (2004) pp. 1183-1196.
Chowdhury Tarifur
Kennedy Covington Lobdell & Hickman LLP
Oerlikon Textile GmbH & Co. KG
Pajoohi Tara S
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