Patent US5251689A successfully refreshed from Google Patents.
US5251689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rollable heat exchanger
Assignee: DONIG CHRISTA
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Filing: 1991-01-07
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Granted: 1993-10-12
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Expires: 2011-01-07
Abstract
Abstract A rollable heat exchanger includes parallel fluid-carrying passageways which are connected with each other by elastic webs. Attached to the passageways-near side of the webs is a filler material which flatly covers the passageways and is of flexible, elastic composition so as to allow coiling of the heat exchanger. Thus, the heat exchanger can be used for a wide range of applications, in particular for covering a surface and/or bridging hollow spaces, especially sporting surfaces and recreational surfaces.
Inventors
- 👤 Parviz Hakim-Elahi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:08
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; F; F24; F24S; F24S10/00; F24S10/70; F24S10/75; F24S10/753; F24S20/00; F24S20/50; F24S20/55; F24S20/60; F24S20/64; F25; F25C; F25C3/00; F25C3/02; F28; F28F; F28F3/00; F28F3/12; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S165/00; Y10S165/905
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
189 words
A rollable heat exchanger comprising: flexible passageway means, including parallel flexible passageways for circulation of a fluid; elastic connecting means including webs for continuously linking adjacent parallel passageways over a substantial portion thereof; said webs and said flexible parallel passageways defining a flat surface on a passageway - distant side of said connecting means and a corrugated surface on a passageway - near side of said connecting means wherein said flexible parallel passage ways define crests of said corrugated surface; a filler formed as a separate layer which is attached to said passageway-near side of said connecting means for embedding said passageway means, said filler being made of flexible, elastic heat conducting material for allowing the unimpeded rolling up of the heat exchanger and for selective use of the heat exchanger for covering a surface and for bridging hollow spaces for use as a sports ground and recreational surface; and an insulator of heat insulating material and formed as a further separate layer for insulating said passageway means, said insulator having an inner flat surface attached to said passageway-distant side of said connecting means in opposition to said filler.
Claim 2
Dependent Claim
189 words
A rollable heat exchanger comprising: flexible passageway means, including parallel flexible passageways for circulation of a fluid; elastic connecting means including webs for continuously linking adjacent parallel passageways over a substantial portion thereof; said webs and said flexible parallel passageways defining a flat surface on a passageway - distant side of said connecting means and a corrugated surface on a passageway - near side of said connecting means wherein said flexible parallel passage ways define crests of said corrugated surface; a filler formed as a separate layer which is attached to said passageway-near side of said connecting means for embedding said passageway means, said filler being made of flexible, elastic heat conducting material for allowing the unimpeded rolling up of the heat exchanger and for selective use of the heat exchanger for covering a surface and for bridging hollow spaces for use as a sports ground and recreational surface; and an insulator of heat insulating material and formed as a further separate layer for insulating said passageway means, said insulator having an inner flat surface attached to said passageway-distant side of said connecting means in opposition to said filler.
Claim 3
Dependent Claim
28 words
A rollable heat exchanger as defined in claim 1 wherein said filler extends beyond the cross sectional area of said passageway means for flatly covering said passageway means.
Claim 4
Dependent Claim
19 words
Use of a rollable heat exchanger as defined in claim 2 wherein said insulator has an exposed flat surface.
Claim 5
Dependent Claim
35 words
A rollable heat exchanger as defined in claim 1 wherein said passageway means includes a first fluid-carrying circulation system and a second fluid-carrying circulation system for selectively supplying a heat transfer medium and a coolant.
Claim 6
Dependent Claim
16 words
A rollable heat exchanger as defined in claim 4 wherein said heat transfer medium is water.
Claim 7
Dependent Claim
14 words
A rollable heat exchanger as defined in claim 4 wherein said coolant is brine.
Claim 8
Dependent Claim
59 words
A rollable heat exchanger as defined in claim 4 wherein said first circulation system has passageways for allowing circulation of said heat transfer medium and said second circulation system has passageways for circulation of said coolant, said passageways of said first circulation system and said passageways of said second circulation system being alternatingly arranged within said rollable heat exchanger.
References Cited (Backward Citations)
US2073023A
Cited
FR1029954A
Cited
FR1586890A
Cited
US3751935A
Cited
US3893507A
Cited
DE2624868A1
Cited
US4112921A
Cited
US4112921B1
Cited
US4294078A
Cited
DE2831591A1
Cited
US4270596B1
Cited
US4270596A
Cited
DE2915975A1
Cited
EP0023043A2
Cited
US4354546A
Cited
DE3100386A1
Cited
DE3100403A1
Cited
NL8100527A
Cited
US4394817A
Cited
DD203369A1
Cited
JPS5895134A
Cited
DE3203428A1
Cited
EP0130502A2
Cited
DE3609186A1
Cited
EP0210285A1
Cited
US4703597A
Cited
US4880051A
Cited
US4817707A
Cited
DE3643668A1
Cited
US4941528A
Cited
US4979373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-11 | 1997-04-12 | 1997-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-11 | 2001-04-12 | 2001-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-11 | 2005-04-12 | 2005-10-12 | $7700.00 | Window Closed / Lapsed |