US3828538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed double twist twisting apparatus mainly adapted to twist steel wires
Assignee: YOSHIDA ENG CO Ltd JA
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Filing: 1972-12-13
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Granted: 1974-08-13
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Expires: 1992-12-13
Abstract
Abstract A double twist twisting apparatus adapted to twist steel wires, comprising a plurality of wire suppliers each having a base pedestal, a main shaft rotatable relative to said pedestal, a first flyer fixed to said shaft, a frame mounted on said first flyer, a wire supply source adapted to remain stationary with respect to said pedestal, even while said flyer rotates, and a plurality of guide rollers mounted on said frame, said wire suppliers each imparting two back-twists to a wire delivered from said wire supply source for each rotation of said first flyer; a back tension capstan for imparting back tension to a group of wires delivered from said wire suppliers; an open-shaped twister having a pair of second flyers being C-shaped and diametrically opposed to each other and supporting a take-up motion between said second flyers via a frame, for imparting a first twist to said group of wires; and a third flyer adapted to be rotated in the same direction and at the same speed as said twister, for imparting a second twist to said group of wires; said third flyer having a twist pitch determining capstan, a wire straightener, a coarse winder, and a slip capstan all supported in said flyer via a frame.
Inventors
- 👤 T Yoshida
- 👤 M Amakasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:36
CPC Classifications
D; D07; D07B; D07B3/00; D07B3/08; D07B3/10; D07B2201/00; D07B2201/20; D07B2201/2095; D07B2201/2097; D07B2207/00; D07B2207/20; D07B2207/204; D07B2207/205; D07B2207/40; D07B2207/4004; D07B2207/4013; D07B2401/00; D07B2401/20; D07B2401/2015
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A double twist twisting apparatus adapted to twist steel wires, comprising a plurality of wire suppliers for imparting two back-twists to each wire and feeding it out; a back tension capstan for imparting back tension to said plurality of wires delivered from said wire suppliers; a twister having a pair of first open-shaped flyers diametrically opposed to each other, and a take-up motion being suspended by said flyers via a frame, for imparting a first twist to a group of said wires; a second flyer adapted to be rotated in the same direction and at the same speed as said twister, for imparting a second twist to said group of wires; and a straightener and a coarse winder for coarsely winding additional wire around said group of wires, both suspended by said flyer via a frame.
Claim 2
Dependent Claim
136 words
A double twist twisting apparatus adapted to twist steel wires, comprising a plurality of wire suppliers for imparting two back-twists to each wire and feeding it out; a back tension capstan for imparting back tension to said plurality of wires delivered from said wire suppliers; a twister having a pair of first open-shaped flyers diametrically opposed to each other, and a take-up motion being suspended by said flyers via a frame, for imparting a first twist to a group of said wires; a second flyer adapted to be rotated in the same direction and at the same speed as said twister, for imparting a second twist to said group of wires; and a straightener and a coarse winder for coarsely winding additional wire around said group of wires, both suspended by said flyer via a frame.
Claim 3
Dependent Claim
86 words
A double twist twisting apparatus according to claim 1, wherein each of said wire suppliers comprises a base pedestal; a third flyer rotating relative to said pedestal; a support for supporting a wire supply source, adapted to remain stationary with respect to said pedestal even while said third flyer rotates; a frame mounted on said third flyer; and a plurality of guide rollers provided on said frame; the wire delivered from said wire supply source being imparted two back-twists for each rotation of said third flyer.
Claim 4
Dependent Claim
34 words
A double twist twisting apparatus according to claim 1, comprising a twist pitch detemining capstan supported in said second flyer via said frame; a slip capstan; and a coarse winder interposed between said capstans.
Claim 5
Dependent Claim
217 words
A double twist twisting apparatus adapted to twist steel wires, comprising a plurality of wire suppliers each having a base pedestal, a main shaft rotatable relative to said pedestal, a first flyer fixed to said shaft, a frame mounted on said first flyer, a wire supply source adapted to remain stationary with respect to said pedestal, even while said flyer rotates, and a plurality of guide rollers mounted on said frame, said wire suppliers each imparting two back-twists to a wire delivered from said wire supply source for each rotation of said first flyer; a back tension capstan for imparting back tension to a group of wires delivered from said wire suppliers; an open-shaped twister having a pair of second flyers being C-shaped and diametrically opposed to each other and supporting a take-up motion between said second flyers via a frame, for imparting a first twist to said group of wires; and a third flyer disposed on a step posterior to said twister and adapted to be rotated in the same direction and at the same speed as said twister, for imparting a second twist to said group of wires; said third flyer having a twist pitch detemining capstan, a wire straightener, a coarse winder, and a slip capstan all supported in said flyer via a frame.
Claim 6
Dependent Claim
217 words
A double twist twisting apparatus adapted to twist steel wires, comprising a plurality of wire suppliers each having a base pedestal, a main shaft rotatable relative to said pedestal, a first flyer fixed to said shaft, a frame mounted on said first flyer, a wire supply source adapted to remain stationary with respect to said pedestal, even while said flyer rotates, and a plurality of guide rollers mounted on said frame, said wire suppliers each imparting two back-twists to a wire delivered from said wire supply source for each rotation of said first flyer; a back tension capstan for imparting back tension to a group of wires delivered from said wire suppliers; an open-shaped twister having a pair of second flyers being C-shaped and diametrically opposed to each other and supporting a take-up motion between said second flyers via a frame, for imparting a first twist to said group of wires; and a third flyer disposed on a step posterior to said twister and adapted to be rotated in the same direction and at the same speed as said twister, for imparting a second twist to said group of wires; said third flyer having a twist pitch detemining capstan, a wire straightener, a coarse winder, and a slip capstan all supported in said flyer via a frame.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |