US4531555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn cutter for shuttleless loom
Assignee: Toray Industries Inc
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Filing: 1983-01-19
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Granted: 1985-07-30
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Expires: 2003-01-19
Abstract
Abstract A yarn cutter for a shuttleless loom, particularly for a water jet loom, comprising a pair of knife bodies each having a cutting edge formed of a ceramic and being driven for relative sliding motion in mutual contact.
Inventors
- 👤 Hiroyuki Tatematsu
- 👤 Haruhiko Kusakabe
- 👤 Masamitsu Takaki
- 👤 Gendai Kojima
- 👤 Sigeru Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:22
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/70; B; B65; B65H; B65H54/00; B65H54/70; B65H54/71; D03D47/00; D03D47/34; D03D47/36; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A yarn cutter for a shuttleless loom, comprising a pair of knife bodies each having a cutting edge and being driven for relative sliding motion in mutual contact, wherein the cutting edge of at least one of said knife bodies comprises at least one ceramic selected from the group consisting of ceramics of oxides, such as an alumina ceramic, a magnesia ceramic, a zirconia ceramic and beryllia ceramic, ceramics of non-oxides such as a silica ceramic, a silicon nitride ceramic and titanium carbide ceramic, and cermet and wherein said zirconia ceramic consists of a dispersion of cubic zirconia or tetragonal zirconia and the content of the tetragonal zirconia is 5 to 70%.
Claim 2
Dependent Claim
112 words
A yarn cutter for a shuttleless loom, comprising a pair of knife bodies each having a cutting edge and being driven for relative sliding motion in mutual contact, wherein the cutting edge of at least one of said knife bodies comprises at least one ceramic selected from the group consisting of ceramics of oxides, such as an alumina ceramic, a magnesia ceramic, a zirconia ceramic and beryllia ceramic, ceramics of non-oxides such as a silica ceramic, a silicon nitride ceramic and titanium carbide ceramic, and cermet and wherein said zirconia ceramic consists of a dispersion of cubic zirconia or tetragonal zirconia and the content of the tetragonal zirconia is 5 to 70%.
Claim 3
Dependent Claim
20 words
A yarn cutter according to claim 1, wherein one of said knife bodies is fixed, while the other is movable.
Claim 4
Dependent Claim
21 words
A yarn cutter according to claim 1, wherein a water supply means is disposed in the vicinity of said cutting edges.
Claim 5
Dependent Claim
26 words
A yarn cutter according to claim 1, wherein said ceramic is a cermet produced by sintering a mixture of a ceramic powder and a metal powder.
Claim 6
Dependent Claim
16 words
A yarn cutter according to claim 1, wherein said shuttleless loom is a water jet loom.
Claim 7
Dependent Claim
27 words
A yarn cutter according to claim 1, wherein the edge angle of said cutting edges as viewed in the cross section is an angle of below 90°.
Claim 8
Dependent Claim
28 words
A yarn cutter according to claim 1, wherein the edge angle of said cutting edges as viewed in the cross section is an angle of 20° to 80°.
Claim 9
Dependent Claim
21 words
A yarn cutter according to claim 1, wherein said yarn cutter is driven by the rocking shaft of said shuttleless loom.
References Cited (Backward Citations)
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Cited
US3376903A
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US4263790A
Cited
US4080735A
Cited
US4275773A
Cited
US4317401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |