US4562869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sterilizable blanket, and a process for its manufacture
Assignee: Microchip Technology Inc
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Filing: 1984-01-31
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Granted: 1986-01-07
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Expires: 2004-01-31
Abstract
Abstract Heat-sterilizable blanket which has good thermal insulation properties, which is particularly suitable for use in hospitals, old people's homes and hostel institutions, and which comprises a regularly interlaced double cloth into which a wadding pick is additionally incorporated in piquelike fashion and floats over wide stretches. The upper and lower warps and upper and lower wefts of this blanket comprise plain-woven high-twist cellulosic fiber yarns, while the wadding pick is made of a low-twist synthetic fiber yarn having a linear density of 100-1,000 tex. The blanket is shrunk to its final dimensions by washing and drying at temperatures of 100° to 135° C., which at the same time bulks up the blanket and increases its pore volume.
Inventors
- 👤 Otto Blum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:04
CPC Classifications
A; A47; A47G; A47G9/00; A47G9/02; A47G9/0207; D; D03; D03D; D03D11/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
A blanket with surfaces made of absorbent material, having light weight and good thermal insulation properties, which can be repeatedly sterilized by boil washing and subsequent treatment at temperatures of up to 135° C. without losing these thermal insulation properties and therefore can be used without a cover, said blanket comprising a double cloth forming outer layers made of plain-woven cellulosic fibers, and an intermediate wadding pick which is fixed in position between the outer layers by a regularly spaced piquelike binding of the outer layers, which wadding pick floats over wide stretches between the binding points of the piquelike binding and is a low-twist uncrimped polypropylene fiber yarn with a linear density of 100 to 1000 tex.
Claim 2
Dependent Claim
118 words
A blanket with surfaces made of absorbent material, having light weight and good thermal insulation properties, which can be repeatedly sterilized by boil washing and subsequent treatment at temperatures of up to 135° C. without losing these thermal insulation properties and therefore can be used without a cover, said blanket comprising a double cloth forming outer layers made of plain-woven cellulosic fibers, and an intermediate wadding pick which is fixed in position between the outer layers by a regularly spaced piquelike binding of the outer layers, which wadding pick floats over wide stretches between the binding points of the piquelike binding and is a low-twist uncrimped polypropylene fiber yarn with a linear density of 100 to 1000 tex.
Claim 3
Dependent Claim
20 words
A blanket as claimed in claim 1, wherein the wadding pick has a linear density of 200 to 500 tex.
Claim 4
Dependent Claim
20 words
A blanket as claimed in claim 1, wherein the wadding pick has a linear density of 250 to 333 tex.
Claim 5
Dependent Claim
23 words
A blanket as claimed in claim 1, wherein the upper and lower wefts and the upper and lower warps comprise high-twist cotton yarn.
Claim 6
Dependent Claim
24 words
A blanket as claimed in claim 1, wherein the weave produces hollow spaces which are at least 5 mm long in the weft direction.
Claim 7
Dependent Claim
15 words
A blanket as claimed in claim 1, which is bound in a honeycomb pique weave.
Claim 8
Dependent Claim
28 words
A blanket as claimed in claim 6, wherein the hollow spaces formed by the honeycomb pique weave are longer in the warp direction than in the weft direction.
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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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |