US5230226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a filter resistant to high temperature
Assignee: Individual
•
Filing: 1991-12-30
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Granted: 1993-07-27
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Expires: 2011-12-30
Abstract
Abstract A method of manufacturing a filter resistant to high temperatures and mechanical stress, includes forming a fiber secured to a suitable framework wherein a double-sided knitted fabric is knitted from a fiber resistant to high temperatures, e.g. poly(m-phenyleneisopthalamide) fiber, on a knitting machine with two rows of needles, and a reinforcing fiber resistant to high temperatures, e.g. aromatic polyamide fiber is fed on top of the fabric, and on top of this a new double-sided fabric, wherein the reinforcing fiber remains in the channels formed by the transverse loops of the knitted structure, after which a piece of this fiber structure is secured to a suitable frame.
Inventors
- 👤 Jukka E. Saarikettu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:14
CPC Classifications
D; D04; D04B; D04B1/00; D04B1/14; D04B1/16; D04B1/10; D04B1/12; D04B1/123; D04B15/00; D04B15/66; D04B15/80; D10; D10B; D10B2331/00; D10B2331/02; D10B2331/021; D10B2401/00; D10B2401/16; D10B2505/00; D10B2505/04; Y; Y10; Y10S; Y10S55/00; Y10S55/45
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
A method for manufacturing a filter resistant to high temperatures, in which the filter is formed of a fiber net by securing it to a suitable framework, characterized in that a double-sided fabric is knitted on a knitting machine equipped with double rows of needles from a poly(m-phenyleneisopthalamide) fabric that withstands high temperatures, and a high temperature resistant reinforcing aromatic polyamide fiber is fed on top of this fabric, and on top of this a new double-sided fabric, in which case the reinforcing fiber remains in the channels formed by the transverse loops of the knitted structure, after which a piece of this kind of fiber structure is secured to a suitable frame.
Claim 2
Independent Claim
113 words
A method for manufacturing a filter resistant to high temperatures, in which the filter is formed of a fiber net by securing it to a suitable framework, characterized in that a double-sided fabric is knitted on a knitting machine equipped with double rows of needles from a poly(m-phenyleneisopthalamide) fabric that withstands high temperatures, and a high temperature resistant reinforcing aromatic polyamide fiber is fed on top of this fabric, and on top of this a new double-sided fabric, in which case the reinforcing fiber remains in the channels formed by the transverse loops of the knitted structure, after which a piece of this kind of fiber structure is secured to a suitable frame.
Claim 3
Dependent Claim
21 words
The method of claim 1 characterized in that carbon fiber is knitted into the fiber net to make it electrically conductive.
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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |