Patent US4601942A successfully refreshed from Google Patents.
US4601942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated soft faced-spiral woven papermakers fabric
Assignee: Asten Inc
•
Filing: 1985-07-08
•
Granted: 1986-07-22
•
Expires: 2005-07-08
Abstract
Abstract The present invention relates to a papermakers fabric having an upper layer comprised of a batt and an under layer comprised of a plurality of intermeshed monofilament spiral coils, retained by pintle means; the upper and lower layers being unified into a single fabric by application of adhesives to the interface between the batt layer and the under layer.
Inventors
- 👤 William A. Finn
- 👤 Harry I. Searfass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:53
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; D21F1/00; D21F1/0027; D21F1/0072; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249922; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/632
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
59 words
An improved papermakers fabric of the type having synthetic monofilament yarns interconnected to define an under layer and a batt which defines an upper layer united in a single fabric by adhesive means, the improvement characterized by: an under layer comprised of a plurality of intermeshed synthetic monofilament spiral strips which are retained in that relationship by pintle means.
Claim 2
Dependent Claim
59 words
An improved papermakers fabric of the type having synthetic monofilament yarns interconnected to define an under layer and a batt which defines an upper layer united in a single fabric by adhesive means, the improvement characterized by: an under layer comprised of a plurality of intermeshed synthetic monofilament spiral strips which are retained in that relationship by pintle means.
Claim 3
Dependent Claim
18 words
The fabric of claim 1, further characterized by: filler strands inserted in the spiral strips between adjacent pintles.
Claim 4
Dependent Claim
30 words
The fabric of claim 2, further characterized by: each of said spiral strips containing a plurality of spirals, each of said spirals having a major axis and a minor axis.
Claim 5
Dependent Claim
33 words
The fabric of claim 3, further characterized by: face portions of at least a first surface of said spirals having a width greater than the diameter of the monofilament comprising the spiral strips.
Claim 6
Dependent Claim
23 words
The fabric of claim 4, further characterized by: said face portions having a width no greater than twice the diameter of the monofilament.
Claim 7
Dependent Claim
32 words
The fabric of claim 5, further characterized by: second face portions on a second surface of said spirals having a width greater than a diameter of the monofilament comprising the spiral strips.
Claim 8
Dependent Claim
24 words
The fabric of claim 6, further characterized by: said second face portions having a width no greater than twice the diameter of the monofilament.
Claim 9
Dependent Claim
44 words
The fabric of claim 7, further characterized by: said second face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament or L=M-(2p+4d).
Claim 10
Dependent Claim
46 words
The fabric of claim 7, further characterized by: said first and second face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament or L=M-(2p+4d).
Claim 11
Dependent Claim
43 words
The fabric of claim 4, further characterized by: said face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament of L=M-(2p+4d).
Claim 12
Dependent Claim
23 words
The fabric of claim 10 further characterized by: said filler strands having a width less than the maximum length of said face portions.
Claim 13
Dependent Claim
32 words
The fabric of claim 10 further characterized by: said filler strands having a width less than the maximum length of said face portions but greater than twice the diameter of the monofilament.
Claim 14
Dependent Claim
30 words
The fabric of claim 1, further characterized by: each of said spiral strips containing a plurality of spirals, each of said spirals having a major axis and a minor axis.
Claim 15
Dependent Claim
33 words
The fabric of claim 13, further characterized by: face portions of at least a first surface of said spirals having a width greater than the diameter of the monofilament comprising the spiral strips.
Claim 16
Dependent Claim
23 words
The fabric of claim 14, further characterized by: said face portions having a width no greater than twice the diameter of the monofilament.
Claim 17
Dependent Claim
32 words
The fabric of claim 15, further characterized by: second face portions on a second surface of said spirals having a width greater than a diameter of the monofilament comprising the spiral strips.
Claim 18
Dependent Claim
24 words
The fabric of claim 16, further characterized by: said second face portions having a width no greater than twice the diameter of the monofilament.
Claim 19
Dependent Claim
44 words
The fabric of claim 17, further characterized by: said second face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament or L=M-(2p+4d).
Claim 20
Dependent Claim
46 words
The fabric of claim 17, further characterized by: said first and second face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament or L=M-(2p+4d).
Claim 21
Dependent Claim
18 words
The fabric of claim 19, further characterized by: filler strands inserted in the spiral strips between adjacent pintles.
Claim 22
Dependent Claim
23 words
The fabric of claim 20, further characterized by: said filler strands having a width less than the maximum length of said face portions.
Claim 23
Dependent Claim
32 words
The fabric of claim 20, further characterized by: said filler strands having a width less than the maximum length of said face portions but greater than twice the diameter of the monofilament.
Claim 24
Dependent Claim
43 words
The fabric of claim 14, further characterized by: said face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament of L=M-(2p+4d).
Claim 25
Dependent Claim
67 words
An improved papermakers' fabric of the type having an under layer, defined by a plurality of synthetic monofilament yarns, and an upper layer, defined by a batt, which are united in a single fabric by adhesive means, the improvement characterized by: each of said under layer synthetic monofilament yarns having a plurality of spirals which are intermeshed with spirals of adjacent yarns and interconnected by pintle means.
Claim 26
Dependent Claim
67 words
An improved papermakers' fabric of the type having an under layer, defined by a plurality of synthetic monofilament yarns, and an upper layer, defined by a batt, which are united in a single fabric by adhesive means, the improvement characterized by: each of said under layer synthetic monofilament yarns having a plurality of spirals which are intermeshed with spirals of adjacent yarns and interconnected by pintle means.
Claim 27
Dependent Claim
20 words
The fabric of claim 24, further characterized by: each of said spirals having a major axis and a minor axis.
Claim 28
Dependent Claim
33 words
The fabric of claim 25, further characterized by: face portions of at least a first surface of said spirals having a width greater than the diameter of the monofilament comprising the spiral strips.
Claim 29
Dependent Claim
23 words
The fabric of claim 26, further characterized by: said face portions having a width no greater than twice the diameter of the monofilament.
Claim 30
Dependent Claim
43 words
The fabric of claim 26, further characterized by: said face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament or L=M-(2p+4d).
Claim 31
Dependent Claim
32 words
The fabric of claim 28, further characterized by: second face portions on a second surface of said spirals having a width greater than a diameter of the monofilament comprising the spiral strips.
Claim 32
Dependent Claim
24 words
The fabric of claim 29, further characterized by: said second face portions having a width no greater than twice the diameter of the monofilament.
Claim 33
Dependent Claim
44 words
The fabric of claim 30, further characterized by: said second face portions having a maximum length defined by the equation maximum length equals the major axis minus twice the diameter of the pintle means plus four times the diameter of the monofilament or L=M-(2p+4d).
References Cited (Backward Citations)
US4119753A
Cited
US4186566A
Cited
US4283454A
Cited
US4381612A
Cited
US4481079A
Cited
US4415625A
Cited
US4446189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |