US4230175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger element
Assignee: Hoechst AG
•
Filing: 1978-02-13
•
Granted: 1980-10-28
•
Expires: 1998-02-13
Abstract
Abstract A heat exchanger element consists of a double fabric web coated on both sides, the distance between the face fabric and the back fabric of which is maintained by binder filaments. This double fabric web is provided with a feeder duct and discharge duct for liquid and gaseous media. The heat exchanger element is used as heat absorber or heater element. It is distinguished by its flexibility. As heater element, it may be doubled with carpet material or used as wall-to-wall carpet.
Inventors
- 👤 Dieter Disselbeck
- 👤 Eduard Hilscher
- 👤 Klaus Speier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:11
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/06; F28F21/061; F24; F24S; F24S70/00; F24S70/10; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
A heat exchanger element comprising a flexible face fabric coated on one side with an impervious material, a flexible back fabric coated on one side with a liquid impervious material spaced from said face fabric with the uncoated sides thereof facing each other; a binder of flexible material positioned between and secured to the uncoated sides of said face and back fabrics; said face and back fabrics being formed of textile fabrics and said binder material being formed of binder filaments positioned between and secured to the uncoated sides of said textile fabrics to maintain said textile fabrics in spaced relation to each other; a feeder duct and a discharge duct for heat exchange medium communicating with the space between said face and back fabrics whereby said heat exchange medium is adapted to flow between said coated fabrics between said binder filaments.
Claim 2
Dependent Claim
142 words
A heat exchanger element comprising a flexible face fabric coated on one side with an impervious material, a flexible back fabric coated on one side with a liquid impervious material spaced from said face fabric with the uncoated sides thereof facing each other; a binder of flexible material positioned between and secured to the uncoated sides of said face and back fabrics; said face and back fabrics being formed of textile fabrics and said binder material being formed of binder filaments positioned between and secured to the uncoated sides of said textile fabrics to maintain said textile fabrics in spaced relation to each other; a feeder duct and a discharge duct for heat exchange medium communicating with the space between said face and back fabrics whereby said heat exchange medium is adapted to flow between said coated fabrics between said binder filaments.
Claim 3
Dependent Claim
27 words
A heat exchanger element as claimed in claim 1, wherein said textile fabrics are formed of filaments selected from the group consisting of polyesters, polyamides, and polytetrafluorethylene.
Claim 4
Dependent Claim
27 words
A heat exchanger element as claimed in claim 1 wherein said binder filaments are formed of monofilaments selected from the group consisting of polyesters, polyamides and polytetrafluoroethylene.
Claim 5
Dependent Claim
28 words
Heat exchange element as claimed in any one of claims 1, 2, or 3, which comprises its being doubled with carpet material, its being mounted as wall-to-wall carpet.
Claim 6
Dependent Claim
34 words
A heat exchanger as claimed in either one of claims 1, 2 or 3 wherein said textile fabrics each include an additional sheet selected from the group consisting of metal, polyolefin and polyester sheets.
Claim 7
Dependent Claim
25 words
A heat exchanger element as claimed in either one of claims 1, 2 or 3 wherein said textile fabrics are coated with polyvinyl chloride paste.
Claim 8
Dependent Claim
25 words
A heat exchanger element as claimed in either one of claims 1, 2 or 3 wherein said coated textile fabrics are coated wih synthetic rubber.
References Cited (Backward Citations)
US1803764A
Cited
GB905760A
Cited
US3236294A
Cited
GB1037959A
Cited
GB1213123A
Cited
US3485245A
Cited
DE1963680A1
Cited
US3612059A
Cited
DE2148401A1
Cited
US3830676A
Cited
GB1486622A
Cited
US4098331A
Cited
GB1497261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |