US4713531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating element for textiles
Assignee: Girmes Werke AG
•
Filing: 1984-07-30
•
Granted: 1987-12-15
•
Expires: 2004-07-30
Abstract
Abstract A heating element for textiles is disclosed, which comprises a plane textile element and, combined with this, metal conductors, which can be connected to a source of electrical current and which oppose the electrical current flowing through them with a heat-producing resistance. As resistance elements, the conductors have metallic fibers or filaments with a denier like that of natural or synthetic textile fibers. The metallic fibers or filaments have an average cross sectional thickness of about 8 to about 24 microns.
Inventors
- 👤 Peter Fennekels
- 👤 Ernst Waltmann
- 👤 Walter Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:04
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/011; H05B2203/014; H05B2203/017; H05B2203/036
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
107 words
A heating element for textiles comprising: (a) a plane textile element, (b) metallic conductors combined with said plate textile element and having metallic fibers and with a denier of natural or synthetic textile fibers and an average cross-section thickness of about 8 to 24 microns, (c) said metallic conductors being resistance elements in that they are connectable to a source of electrical current and oppose electrical current flowing through them with a heat-producing resistance, (d) said conductors being provided with an electrically-insulating sheath, (e) said fibers behaving like textile fibers and therefore not noticeably changing the natural behavior of the textiles and withstanding crushing and bending stresses.
Claim 2
Dependent Claim
107 words
A heating element for textiles comprising: (a) a plane textile element, (b) metallic conductors combined with said plate textile element and having metallic fibers and with a denier of natural or synthetic textile fibers and an average cross-section thickness of about 8 to 24 microns, (c) said metallic conductors being resistance elements in that they are connectable to a source of electrical current and oppose electrical current flowing through them with a heat-producing resistance, (d) said conductors being provided with an electrically-insulating sheath, (e) said fibers behaving like textile fibers and therefore not noticeably changing the natural behavior of the textiles and withstanding crushing and bending stresses.
Claim 3
Dependent Claim
106 words
A heating element for textiles comprising: (a) a plane textile element, (b) metallic conductors combined with said plane textile element and having metallic filaments with a denier of natural or synthetic textile fibers and an average cross-sectional thickness of about 8 to 24 microns, (c) said metallic conductors being resistance elements in that they are connectable to a source of electrical current and oppose electrical current flowing through them with a heat-producing resistance, (d) said conductors being provided with an electrically-insulating sheath, (e) said filaments behaving like textile fibers and therefore not noticeably changing the natural behavior of the textiles and withstanding crushing and bending stresses.
Claim 4
Dependent Claim
106 words
A heating element for textiles comprising: (a) a plane textile element, (b) metallic conductors combined with said plane textile element and having metallic filaments with a denier of natural or synthetic textile fibers and an average cross-sectional thickness of about 8 to 24 microns, (c) said metallic conductors being resistance elements in that they are connectable to a source of electrical current and oppose electrical current flowing through them with a heat-producing resistance, (d) said conductors being provided with an electrically-insulating sheath, (e) said filaments behaving like textile fibers and therefore not noticeably changing the natural behavior of the textiles and withstanding crushing and bending stresses.
Claim 5
Dependent Claim
21 words
Heating element as defined in claim 1, wherein the metallic fibers have a staple length of about 50 to 200 mm.
Claim 6
Dependent Claim
21 words
Heating element as defined in claim 2, wherein the metallic filaments have a finite length of about 1.5 m or more.
Claim 7
Dependent Claim
25 words
Heating element as defined in claim 2, wherein the metal fibers or filaments have a weight per meter of about 1 to about 7 g.
Claim 8
Dependent Claim
16 words
Heating element as defined in claim 1, wherein the metallic fibers are a metal fiber sliver.
Claim 9
Dependent Claim
15 words
Heating element as defined in claim 2, wherein the metallic filaments are combined into yarns.
Claim 10
Dependent Claim
20 words
Heating element as defined in claim 1 wherein the metallic fibers have a weight per meter of about 7 g.
Claim 11
Dependent Claim
18 words
Heating element as defined in claims 1 or 2, wherein the sheath is a braid of textile fibers.
Claim 12
Dependent Claim
18 words
Heating element as defined in claims 1 or 2, wherein the sheath is formed from a textile yarn.
Claim 13
Dependent Claim
21 words
Heating element as defined in claims 1 or 2, wherein the sheath comprises an elastomer, in which the conductor is embedded.
Claim 14
Dependent Claim
39 words
Heating element as defined in one of the claims 1 or 2, wherein the conductors, which are provided with an electrically insulating sheath, are combined, in undulating or meandering form with a textile material such as a pile material.
Claim 15
Dependent Claim
43 words
Heating element as defined in one of the claims 1 or 2, wherein the conductors are provided in a flat weave or a in a single-layer mesh material, that is combined in an electrically insulating manner with the textile fabric to be heated.
Claim 16
Dependent Claim
38 words
Heating element as defined in claim 13, wherein narrow strips of conductor-containing material (8) are arranged at the two longitudinal edges of the rectangular flat weave or mesh material as positive and negative leads for the electrical current.
Claim 17
Dependent Claim
17 words
Heating element as defined in claim 14, wherein the narrow strips are knitted onto the mesh material.
Claim 18
Dependent Claim
31 words
Heating element as defined in claim 13, wherein the metallic fibers of the conductors have a lesser thickness in the flat weave or mesh material (3) than in the lateral strips.
Claim 19
Dependent Claim
48 words
Heating element as defined in one of the claims 1 or 2, wherein the metallic fibers form a thin fiber fleece, that is combined with a thin, electrically insulating support layer and is attached by means of an insulating intermediate layer to a textile material to be heated.
Claim 20
Dependent Claim
44 words
Heating element as defined in claim 1, wherein the metallic fibers have a length of less than 1 mm and are layered with a binder, which is processed as a paste, on a back side of the textile material which is to be heated.
Claim 21
Dependent Claim
37 words
Heating element as defined in claim 1, wherein the metallic fibers are flocked on an insulating layer, which is attached to a textile fabric to be heated and is covered with an insulating, flexible width of fabric.
References Cited (Backward Citations)
US1036632A
Cited
US1872581A
Cited
US2884509A
Cited
US2938992A
Cited
US2922867A
Cited
US3047701A
Cited
US3349359A
Cited
US3513297A
Cited
DE1940439A1
Cited
US3627981A
Cited
US3900624A
Cited
US4144445A
Cited
DE2919819A1
Cited
DE3117247A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |