US3857228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisting frame
Assignee: Murata Machinery Ltd
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Filing: 1973-10-18
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Granted: 1974-12-31
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Expires: 1993-10-18
Abstract
Abstract A twisting frame is provided with a covering duct which covers a running second covering duct which covers a twisting unit provided with a twisting spindle, a main duct which is arranged on, and extends along the whole length of the frame, wherein the belt covering duct, said twisting unit covering duct and the main duct are connected to each other so that fly waste, heat and noise generated by the twisting operation may be delivered to the outside by an air stream which is induced by the running of said belt.
Inventors
- 👤 M Kuninaga
- 👤 J Teranishi
- 👤 T Nakahara
- 👤 M Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:00
CPC Classifications
D; D01; D01H; D01H11/00; D01H11/005; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y02P70/62
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A twisting frame provided with a plurality of twisting spindles, each of said spindles being driven by a tangential belt running along the length of the frame, wherein a duct assembly comrises a belt coVering duct (11), which covers said tangential belt; a plurality of twisting units; a twisting zone covering duct (13) for each said twisting unit, said twisting units each being provided with a twisting spindle; a main duct (14) mounted on and extending along the whole length of the frame; first means for connecting said belt covering duct to said twisting unit covering duct of the twisting zone; and second means for connecting said twisting zone covering ducts to said main duct.
Claim 2
Dependent Claim
115 words
A twisting frame provided with a plurality of twisting spindles, each of said spindles being driven by a tangential belt running along the length of the frame, wherein a duct assembly comrises a belt coVering duct (11), which covers said tangential belt; a plurality of twisting units; a twisting zone covering duct (13) for each said twisting unit, said twisting units each being provided with a twisting spindle; a main duct (14) mounted on and extending along the whole length of the frame; first means for connecting said belt covering duct to said twisting unit covering duct of the twisting zone; and second means for connecting said twisting zone covering ducts to said main duct.
Claim 3
Dependent Claim
24 words
A twisting frame as claimed in claim 1, further comprising means for connecting an end of said belt covering duct, to said main duct.
Claim 4
Dependent Claim
53 words
A twisting frame as claimed in claim 1, wherein said belt covering duct and said twisting unit covering duct having a common wall, and wherein said means for connecting said belt covering duct and said twisting unit covering duct comprises an opening (28) in the common wall of the said two covering ducts.
Claim 5
Dependent Claim
53 words
A twisting frame as claimed in claim 1, wherein said means for connecting said twisting unit covering duct and said main duct is an air pipe (24), the center line of which is arranged parallel to a line tangential to a helical flow path of air flowing within said twisting unit covering duct.
Claim 6
Dependent Claim
50 words
A twisting frame as claimed in claim 1, wherein said twisting unit covering duct has a tapered cylindrical cavity (32), the diameter of the upper part of said tapered cylindrical cavity being larger than that of the lower part, the bottommost part of said cylindrical cavity forming a concave surface.
Claim 7
Dependent Claim
57 words
A twisting frame as claimed in claim 1, wherein the outer surface of each of said twisting unit covering ducts is square, a projection (41) is provided on one side of said square, and on the opposite side of the square a groove (40) is provided for accepting the projection of an adjacent twisting unit covering duct.
Claim 8
Dependent Claim
41 words
A twisting frame as defined in claim 1, wherein the inside of said main duct is provided with two dividing sheets (29, 30), the space between the said dividing sheets being wider at their upstream portions than at their downstream portions.
Claim 9
Dependent Claim
51 words
A twisting frame as defined in claim 1, wherein an air suction apparatus is provided, said air suction apparatus comprising a collecting duct (56) and a filter (76), said filter being mounted in said collecting duct, said air suction apparatus being connected to the air outlet end of said main duct.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |