Yarn braking device

Details Yarn braking device Yarn braking device

2011-03-01

2011-03-01

Dondero, William E (Department: 3654)

Winding, tensioning, or guiding

Unidirectional winding and unwinding

Variable number of windings on support

C242S419300, C242S419400, C242S15000R, C139S194000

Reexamination Certificate

active

07896279

ABSTRACT:
A yarn braking device includes a braking body with the shape of a frustocone coat. The braking body is put over a rounded withdrawal end of a storage body and is pressed from the small diameter end by a resilient axial force against the withdrawal end. The axial force defines the braking effect between the braking body and the withdrawal end. Between a stationary holder and the braking body an axial force generator and a centering device acting in radial direction are provided. The axial force generator is formed by at least one pair of permanent magnets. The permanent magnets are axially aligned by the centering devices with an intermediate gap. The centering device neither is an axial sliding guiding system structurally and functionally separated from the pair of permanent magnets, or is formed free of contact directly by the pair of permanent magnets, respectively.

REFERENCES:
patent: 5778943 (1998-07-01), Tholander
patent: 5979810 (1999-11-01), Barth
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patent: WO 9964337 (1999-12-01), None
patent: WO 0236475 (2002-05-01), None
patent: WO 2007048528 (2007-05-01), None
patent: WO 2007079962 (2007-07-01), None
Machine Translation of WO-0236475.
International Search Report dated Aug. 9, 2005 (2 pages).

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