US3915202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fourdrinier papermaking belts
Assignee: Albany International Corp
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Filing: 1974-05-03
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Granted: 1975-10-28
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Expires: 1994-05-03
Abstract
Abstract A woven Fourdrinier Papermaking Belt made of synthetic polyester cross-machine direction strands and machine direction strands, in which the cross-machine direction strands have a low modulus of elasticity measured in their woven heat-set condition and the machine direction strands have a higher modulus of elasticity, both modulus measurements being made at an extension of the strand at which the crimp has just been substantially pulled out.
Inventors
- 👤 Donald R Curtis
- 👤 Christian B Widen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:50
CPC Classifications
D; D03; D03D; D03D15/00; D03D15/20; D03D15/283; D03D15/30; D03D15/37; D03D25/00; D10; D10B; D10B2331/00; D10B2331/04; Y; Y10; Y10S; Y10S162/00; Y10S162/903
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A woven Fourdrinier papermaking belt made of machine direction and cross-machine direction strands of heat-set synthetic plastic monofilament material, comprising the combination of: 1. cross-machine direction strands of synthetic polyester material having, in their woven and heat-set condition, a modulus of elasticity of less than about 0.95 X 104 psi per 10 percent extension, measured as herein defined; and 2. machine direction strands of synthetic polyester material weavable with the cross-machine direction strands and having, in their woven and heat-set condition, a modulus of elasticity greater than about 1.0 X 104 psi per 10 percent extension measured as herein defined.
Claim 2
Dependent Claim
100 words
A woven Fourdrinier papermaking belt made of machine direction and cross-machine direction strands of heat-set synthetic plastic monofilament material, comprising the combination of: 1. cross-machine direction strands of synthetic polyester material having, in their woven and heat-set condition, a modulus of elasticity of less than about 0.95 X 104 psi per 10 percent extension, measured as herein defined; and 2. machine direction strands of synthetic polyester material weavable with the cross-machine direction strands and having, in their woven and heat-set condition, a modulus of elasticity greater than about 1.0 X 104 psi per 10 percent extension measured as herein defined.
Claim 3
Dependent Claim
40 words
machine direction strands of synthetic polyester material weavable with the cross-machine direction strands and having, in their woven and heat-set condition, a modulus of elasticity greater than about 1.0 X 104 psi per 10 percent extension measured as herein defined.
Claim 4
Dependent Claim
40 words
machine direction strands of synthetic polyester material weavable with the cross-machine direction strands and having, in their woven and heat-set condition, a modulus of elasticity greater than about 1.0 X 104 psi per 10 percent extension measured as herein defined.
Claim 5
Dependent Claim
33 words
A Fourdrinier papermaking belt according to claim 1 wherein: the cross-machine direction strands have a modulus of elasticity in the range of about 0.55 to 0.90 X 104 psi per 10 percent extension.
Claim 6
Dependent Claim
40 words
machine direction strands of synthetic polyester material weavable with the cross-machine direction strands and having, in their woven and heat-set condition, a modulus of elasticity greater than about 1.0 X 104 psi per 10 percent extension measured as herein defined.
Claim 7
Dependent Claim
40 words
machine direction strands of synthetic polyester material weavable with the cross-machine direction strands and having, in their woven and heat-set condition, a modulus of elasticity greater than about 1.0 X 104 psi per 10 percent extension measured as herein defined.
Claim 8
Dependent Claim
28 words
A Fourdrinier papermaking belt according to claim 1, wherein: the cross-machine direction strands have a modulus of elasticity of about 0.82 X 104 psi per 10 percent extension.
Claim 9
Dependent Claim
28 words
A Fourdrinier papermaking belt according to claim 1, wherein: the cross-machine direction strands have a modulus of elasticity of about 0.85 X 104 psi per 10 percent extension.
Claim 10
Dependent Claim
28 words
A Fourdrinier papermaking belt according to claim 1, wherein: the cross-machine direction strands have a modulus of elasticity of about 0.88 X 104 psi per 10 percent extension.
Claim 11
Dependent Claim
28 words
A Fourdrinier papermaking belt according to claim 1, wherein: the cross-machine direction strands have a modulus of elasticity of about 0.72 X 104 psi per 10 percent extension.
Claim 12
Dependent Claim
23 words
A woven Fourdrinier papermaking belt made of machine direction and cross-machine direction strands of heat-set synthetic plastic monofilament material, comprising the combination of:
Claim 13
Dependent Claim
23 words
A woven Fourdrinier papermaking belt made of machine direction and cross-machine direction strands of heat-set synthetic plastic monofilament material, comprising the combination of:
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |