Patent CA561918A successfully refreshed from Google Patents.
US4606290A
Expired / Lapsed
US
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Process for the manufacture of a wool fabric for beds, more particularly a mattress cover, and fabric obtained by said process
Assignee: Manifattura Lane Gaetano Marzotto e Figli SpA
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Filing: 1985-04-11
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Granted: 1986-08-19
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Expires: 2005-04-11
Abstract
Abstract The process for the manufacture of a wool fabric to be used as a mattress cover comprises four steps in succession, that is a loosening step, a shearing step, a moistening step and a pressing step, and further trimming steps for applying elements of electrically conductive material to said fabric as well as at least a shunt for grounding the same elements. The wool fabric 16 thus obtained comprises wool yarns having a substantially reduced length and sticking fast to the weft of the fabric itself, as well as elements 104, 106 of electrically conductive material and at least a shunt 108 for grounding the elements 104, 106 and adapted to allow the electrostatic energy to be discharged from a sleeping person.
Inventors
- 👤 Gaetano Marzotto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:10
CPC Classifications
A; A43; A43D; A43D21/00; A43D21/14; A47; A47C; A47C31/00; A47C31/004; A47C31/10; A47C31/105; D; D06; D06C; D06C13/00; A61; A61N; A61N1/00; A61N1/14; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S5/00; Y10S5/948; Y10S5/949
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
A process of manufacturing a wool fabric capable of withstanding rubbing stresses and wear and eliminating electrostatic charges wherein a raw wool fabric is subjected to a loosening step during which wool flock is pulled out from the fabric and given a uniform direction; the loosened fabric is subjected to a shearing step to clip the previously raised flock; the sheared fabric is subjected to a moistening step and the moistened fabric is subjected to a pressing step to enhance uniform adhesion of flock to the fabric weft; and said pressed fabric is subjected to further trimming steps to apply electrically conductive elements thereto as well as a shunt for grounding said elements.
Claim 2
Dependent Claim
113 words
A process of manufacturing a wool fabric capable of withstanding rubbing stresses and wear and eliminating electrostatic charges wherein a raw wool fabric is subjected to a loosening step during which wool flock is pulled out from the fabric and given a uniform direction; the loosened fabric is subjected to a shearing step to clip the previously raised flock; the sheared fabric is subjected to a moistening step and the moistened fabric is subjected to a pressing step to enhance uniform adhesion of flock to the fabric weft; and said pressed fabric is subjected to further trimming steps to apply electrically conductive elements thereto as well as a shunt for grounding said elements.
Claim 3
Dependent Claim
34 words
The process according to claim 1 wherein between said shearing and moistening steps is provided an additional suction step, aiming at removing all the wool hair that is not fixedly fastened to the fabric.
Claim 4
Dependent Claim
18 words
The process according to claim 1, wherein the moistening step consists in impregnating the wool fabric with steam.
Claim 5
Dependent Claim
27 words
The process according to claim 1 wherein the pressing step consists in heating and pressing the wool fabric on both its surfaces by means of heating rollers.
Claim 6
Dependent Claim
55 words
The process according to claim 1 wherein said further trimming steps consist in applying electrically conductive wires, preferably copper wires, to the wool fabric both transversely to the same and along its contour, the enclosing wire being brought into electrical contact with the wires disposed transversely and the grounding being defined by a further wire.
Claim 7
Dependent Claim
39 words
The process according to claim 5 wherein said transversely disposed wires and said further wire defining the grouding are applied to said wool fabric by means of tapes into which said wires are directly woven as normal warp yarns.
Claim 8
Dependent Claim
31 words
The process according to claim 5 wherein said enclosing wire is engaged with the wool fabric by the same whipstitching that is used for trimming the borders of the fabric itself.
Claim 9
Dependent Claim
35 words
The process according to claim 7 wherein said whipstitching used for trimming the wool fabric borders is also used for engaging the wool fabric with elastic laces wrapping the mattress corners and with said grounding.
Claim 10
Dependent Claim
10 words
The wool fabric produced by the process of claim 1.
Claim 11
Dependent Claim
10 words
The wool fabric produced by the process of claim 5.
Claim 12
Dependent Claim
24 words
The fabric of claim 10 wherein the further grounding wire consists of an extension of one of the wires applied transversely to the fabric.
Claim 13
Dependent Claim
10 words
The wool fabric produced by the process of claim 6.
Claim 14
Dependent Claim
10 words
The wool fabric produced by the process of claim 7.
Claim 15
Dependent Claim
10 words
The wool fabric produced by the process of claim 8.
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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |