Patent US4432409A successfully refreshed from Google Patents.
US4432409A
Expired / Lapsed
US
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Rotary heat regenerator wheel and method of manufacture thereof
Assignee: Airxchange Inc
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Filing: 1981-11-03
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Granted: 1984-02-21
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Expires: 2001-11-03
Abstract
Abstract This invention provides a rotary heat regenerator which includes a regenerator wheel in which the regenerator matrix is formed of at least one strip of synthetic organic plastic wound onto a central hub, with suitable spacing means being formed in the strip to form gas passages. Inexpensive means is provided to stiffen the wheel to impart lateral strength and rotational stability. In one embodiment of the invention, radial portions of the face of the matrix are fastened together by fusing, by an adhesive, or both. In another embodiment of the invention, radial apertures are formed in the wheel by forcing a heated tool, radially into the wheel periphery so that the surfaces of the strip layers of the matrix are fused together, forming a hollow cylinder bounded by a continuous layer of plastic. To impart further rigidity to the wheel, the hollow cylinder may be filled with a reinforcing rod of plastic or metal.
Inventors
- 👤 Donald F. Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:35
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/042; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S264/00; Y10S264/48
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A rotary heat recovery device, comprising a heat recovery wheel formed of spiral wound layers of at least one strip of synthetic organic plastic material and spacing means between the layers forming gas passages therebetween, in which the wheel has reinforcing means provided by narrow portions extending radially in which the layers of the strip have been adhered together.
Claim 2
Dependent Claim
59 words
A rotary heat recovery device, comprising a heat recovery wheel formed of spiral wound layers of at least one strip of synthetic organic plastic material and spacing means between the layers forming gas passages therebetween, in which the wheel has reinforcing means provided by narrow portions extending radially in which the layers of the strip have been adhered together.
Claim 3
Dependent Claim
44 words
A rotary heat recovery device as set out in claim 1 in which said strip is formed of thermoplastic and the adherence of the layers is effected by fusion of the layers together along a radial portion to form a continuous radial thermoplastic surface.
Claim 4
Dependent Claim
31 words
A rotary heat recovery device as set out in claim 2 in which the radial portion is formed on the surface of the wheel by fused portions of the strip edges.
Claim 5
Dependent Claim
45 words
A rotary heat recovery device as set out in claim 2 in which the radial portion is in the form of a hollow tube extending radially inwardly from the periphery of the wheel, said tube having a surface formed of fused plastic of the strips.
Claim 6
Independent Claim
38 words
The method of providing reinforcement to a rotary heat recovery device formed of a spiral winding of at least one strip of thermoplastic material, comprising applying to said strip a heated member to form a radial fused portion.
Claim 7
Independent Claim
38 words
The method of providing reinforcement to a rotary heat recovery device formed of a spiral winding of at least one strip of thermoplastic material, comprising applying to said strip a heated member to form a radial fused portion.
Claim 8
Dependent Claim
38 words
A method as set out in claim 5 in which the heated member has a surface which is capable of fusing into adherence with the strip material, and said heater member is retained in assembly with the wheel.
Claim 9
Independent Claim
38 words
A method of manufacture of a heat regenerator wheel comprising winding a spiral winding of strip material having embossments to provide gas passages around a hub, and fusing an elongated member into the side surface of the wheel.
Claim 10
Independent Claim
38 words
A method of manufacture of a heat regenerator wheel comprising winding a spiral winding of strip material having embossments to provide gas passages around a hub, and fusing an elongated member into the side surface of the wheel.
Claim 11
Independent Claim
66 words
A method of providing lateral and rotary re-inforcement to a heat regenerator wheel formed of spiral layers of thermoplastic strip on a thermoplastic hub, comprising applying to the surface of the wheel a radial member and causing said radial member to adhere to each layer of the strip and to the hub, whereby driving force from the hub is transmitted to each layer of the strip.
Claim 12
Independent Claim
66 words
A method of providing lateral and rotary re-inforcement to a heat regenerator wheel formed of spiral layers of thermoplastic strip on a thermoplastic hub, comprising applying to the surface of the wheel a radial member and causing said radial member to adhere to each layer of the strip and to the hub, whereby driving force from the hub is transmitted to each layer of the strip.
Claim 13
Dependent Claim
35 words
A method as set out in claim 8 in which said radial member applies heat to the surface of the wheel to fuse the edges of the strip layers into adherence with the radial member.
References Cited (Backward Citations)
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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) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |