US4186780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seam construction for multi-layer felts
Assignee: Albany International Corp
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Filing: 1978-12-15
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Granted: 1980-02-05
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Expires: 1998-12-15
Abstract
Abstract The disclosure is of a seam construction for joining the ends of woven papermakers felt or dryer felts, wet felts forming fabrics characterized in part by a first system of lengthwise yarns in one layer and a second system of lengthwise yarns positioned above the first system. The seam comprises looped ends of the lengthwise yarns projecting from the respective ends of the fabric, and positioned to interleaf with the opposite end loops. Pins are placed through the interleafed loops so as to provide joinder in the two systems, respectively, of the felt or fabric.
Inventors
- 👤 Michael J. Josef
- 👤 Eric R. Romanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:54
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/10; D03; D03D; D03D3/00; D03D3/04; D21F1/00; D21F1/0027; D21F1/0036; D21F1/0054; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10S162/903
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
198 words
A pin seam construction joining together the two ends of a multi-layered, woven papermakers felt or forming fabric characterized in part by a first system of lengthwise yarns in one layer and a second system of lengthwise yarns positioned above the first system, which comprises; a plurality of first loops protruding from the two ends of the fabric on a plane co-extensive with the plane of the lengthwise yarns in the first system of lengthwise yarns; a plurality of second loops, protruding from the two ends of the fabric on a plane co-extensive with the plane of the lengthwise yarns in the second system of lengthwise yarns; said loops being anchored in the body of the felt or fabric; said loops in one end being alternately displaced in respect to the loops of the other end so that the loops of the one end will interleaf with the loops of the other end when the ends are brought together to form a seam at the interleafed loops; a first pintle through the plurality of interleafed first loops; and a second pintle through the plurality of interleafed second loops; said pintles joining the interleafed loops in a seam construction.
Claim 2
Dependent Claim
198 words
A pin seam construction joining together the two ends of a multi-layered, woven papermakers felt or forming fabric characterized in part by a first system of lengthwise yarns in one layer and a second system of lengthwise yarns positioned above the first system, which comprises; a plurality of first loops protruding from the two ends of the fabric on a plane co-extensive with the plane of the lengthwise yarns in the first system of lengthwise yarns; a plurality of second loops, protruding from the two ends of the fabric on a plane co-extensive with the plane of the lengthwise yarns in the second system of lengthwise yarns; said loops being anchored in the body of the felt or fabric; said loops in one end being alternately displaced in respect to the loops of the other end so that the loops of the one end will interleaf with the loops of the other end when the ends are brought together to form a seam at the interleafed loops; a first pintle through the plurality of interleafed first loops; and a second pintle through the plurality of interleafed second loops; said pintles joining the interleafed loops in a seam construction.
Claim 3
Dependent Claim
27 words
The pin seam construction of claim 1 wherein the lengthwise yarns in the first system are in vertical alignment with the lengthwise yarns in the second system.
Claim 4
Dependent Claim
27 words
The seam construction of claim 1 wherein the lengthwise yarns in the first system are displaced from a vertical alignment with the lengthwiseyarns in the second system.
Claim 5
Dependent Claim
44 words
The seam construction of claim 1 wherein the yarns in the first system are selected from the group consisting of spun yarns, multifilaments and monofilaments and the yarns in the second system are selected from the group consisting of spun yarns, multifilaments and monofilaments.
Claim 6
Dependent Claim
19 words
The seam construction of claim 4 wherein the yarns in the first system and the second system are monofilaments.
Claim 7
Dependent Claim
34 words
The seam construction of claim 4 wherein the yarns in the first system are monofilaments and the yarns in the second system are selected from the group consisting of spun yarns and multifilament yarns.
Claim 8
Dependent Claim
15 words
The seam construction of claim 1 wherein the two ends are of a forming fabric.
Claim 9
Dependent Claim
15 words
The seam construction of claim 1 wherein the two ends are of a papermakers felt.
Claim 10
Dependent Claim
13 words
The seam construction of claim 8 wherein the felt is a wet felt.
Claim 11
Dependent Claim
13 words
The seam construction of claim 8 wherein the felt is a dryer felt.
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) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |