← Back to Patent Explorer
US3673781A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for spinning yarn

Assignee: SKF GmbH
•
Filing: 1970-04-27
•
Granted: 1972-07-04
•
Expires: 1990-04-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract r comprising a spinning rotor journaled in a bearing housing and enclosing a spinning chamber having a circumferential groove and a hollow shaft defining its axis of rotation, a feeding device arranged upstream from the spinning rotor for supplying individual fibers from a fiber web and means creating an electrostatic field through which said fibers pass to charge said fibers, said means for providing said electrostatic field being formed of a first electrode comprising said feeding device and a second electrode comprising at least a portion of said spinning rotor, and a source of high voltage, said feed means being arranged so that said charged fibers are impelled toward said spinning chamber in a direction parallel to the axis of rotation of said spinning rotor, electrically conductive means located within said spinning chamber and connected to said second electrode for electrically discharging said fibers and baffle means covering said spinning chamber to prevent rearward movement of said discharged fibers, said fibers being centrifugally deposited in said groove parallel with each other and subsequently spun within said chamber.

Inventors

  • 👤 Karl-Heinz Breitenbach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 11:23
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/28

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 50 words
The apparatus according to claim 1 wherein the feeding unit includes a discharge portion arranged at a distance from the axis of the spinning rotor and a stationary guiding device arranged between the discharge of the feeding device and the spinning rotor, for guiding the fibers to the spinning rotor.
Claim 2
Dependent Claim 26 words
The apparatus according to claim 2 wherein the guiding device comprises a conically tapered tube of insulating material narrowing the direction of movement of the fibers.
Claim 3
Dependent Claim 41 words
The apparatus according to claim 3 wherein a baffle plate is arranged coaxially to the spinning rotor, said baffle plate covering said spinning chamber in an outward direction and consisting of insulating material, said guiding tube penetrating through said baffle plate.
Claim 4
Dependent Claim 36 words
The apparatus according to claim 1 wherein the spinning rotor is made of insulating material and has an electrically conducting layer on its inner surface, the conducting layer covering the entire inner face of said rotor.
Claim 5
Dependent Claim 23 words
The appAratus according to claim 1 in that said feeding device is equipped with at least one roller and with a cooperating counter-piece.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-07-04 1976-01-03 1976-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-04 1980-01-03 1980-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-04 1984-01-03 1984-07-04 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag