Patent US4423771A successfully refreshed from Google Patents.
US4423771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Individual
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Filing: 1981-01-26
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Granted: 1984-01-03
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Expires: 2001-01-26
Abstract
Abstract A heat exchanger is disclosed comprising a plurality of spaced apart parallel plates having a plurality of apertures therein, a plurality of hollow frusto-conically shaped cone members having a larger base end and a smaller opposite end with the cone members being inserted in the apertures of the plate and being of such relative size to be tightly embraced by the peripheries of the apertures, the opposite ends of the cones in each of the plates being tightly nested and stacked in the base ends of the cones in the next adjacent plate, and means for fixedly securing the plates in parallel relation to bind the cone members in stacked relation.
Inventors
- 👤 Charles V. Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:39
CPC Classifications
F; F28; F28D; F28D21/00; F28D21/0001; F28D21/0003; F28D21/0005; F28D21/0008; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/26; F28F1/28; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/461; Y10S165/462; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/4938
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
261 words
A heat exchanger comprising a plurality of spaced apart parallel flat plates having a plurality of apertures therein, with each aperture dwelling entirely within the thickness of said plates, a plurality of hollow frusto-conically shaped cone members having a larger base end and a smaller opposite end, said cone members having straight tapered side walls that uniformly decrease in diameter from said base end to said opposite end, said cone members being inserted in the apertures of said plates and being of such relative size to be tightly embraced by the peripheries of said apertures whereby said cone members only frictionally retentively engage said peripheries of said apertures, the opposite ends of said cones in each of said plates being tightly nested and stacked in the base ends of the cones in the next adjacent plate whereby said opposite ends of said cones only frictionally retentively engage said base ends of said cones in the next adjacent plate, and means for fixedly securing said plates in parallel relation to bind said cone members in stacked relation with said cones in each of said plates tightly engaging the apertures of said plate and being tightly nested in the base end of the cones in the next adjacent plate, said means for fixedly securing said plates comprising mechanical securement means interconnecting said plates remote from said cones, said stacked cone members forming a plurality of stacks generally perpendicular to said spaced apart plates, and said spaced apart plates forming a plurality of air passageways between said plates with said stacks within said passageways.
Claim 2
Dependent Claim
261 words
A heat exchanger comprising a plurality of spaced apart parallel flat plates having a plurality of apertures therein, with each aperture dwelling entirely within the thickness of said plates, a plurality of hollow frusto-conically shaped cone members having a larger base end and a smaller opposite end, said cone members having straight tapered side walls that uniformly decrease in diameter from said base end to said opposite end, said cone members being inserted in the apertures of said plates and being of such relative size to be tightly embraced by the peripheries of said apertures whereby said cone members only frictionally retentively engage said peripheries of said apertures, the opposite ends of said cones in each of said plates being tightly nested and stacked in the base ends of the cones in the next adjacent plate whereby said opposite ends of said cones only frictionally retentively engage said base ends of said cones in the next adjacent plate, and means for fixedly securing said plates in parallel relation to bind said cone members in stacked relation with said cones in each of said plates tightly engaging the apertures of said plate and being tightly nested in the base end of the cones in the next adjacent plate, said means for fixedly securing said plates comprising mechanical securement means interconnecting said plates remote from said cones, said stacked cone members forming a plurality of stacks generally perpendicular to said spaced apart plates, and said spaced apart plates forming a plurality of air passageways between said plates with said stacks within said passageways.
Claim 3
Dependent Claim
49 words
The heat exchanger of claim 1 wherein the base ends of the cones in one plate abutt and engage the surface of the next adjacent plate whereby the base ends of said cones in said one plate extend around the periphery of an aperture in the next adjacent plate.
Claim 4
Dependent Claim
229 words
A heat exchanger comprising a plurality of spaced apart parallel flat plates having a plurality of apertures therein, a plurality of hollow frusto-conically shaped cone members having a larger base end and a smaller opposite end, said cone members being inserted in the apertures of said plates and being of such relative size to be tightly embraced by the peripheries of said apertures whereby said cone members frictionally retentively engage said peripheries of said apertures, the opposite ends of said cones in each of said plates being tightly nested and stacked in the base ends of the cones in the next adjacent plate whereby said opposite ends of said cones frictionally retentively engage said base ends of said cones in the next adjacent plate, and means for fixedly securing said plates in parallel relation to bind said cone members in stacked relation said means for fixedly securing said plates comprising mechanical securement means, the base ends of the cones in each of said plates abutting and engaging the surface of the next adjacent plate whereby the base ends of said cones extend around the periphery of an aperture in the next adjacent plate, said stacked cone members forming a plurality of stacks generally perpendicular to said spaced apart plates, and said spaced apart plates forming a plurality of air passageways between said plates with said stacks within said passageways.
Claim 5
Dependent Claim
229 words
A heat exchanger comprising a plurality of spaced apart parallel flat plates having a plurality of apertures therein, a plurality of hollow frusto-conically shaped cone members having a larger base end and a smaller opposite end, said cone members being inserted in the apertures of said plates and being of such relative size to be tightly embraced by the peripheries of said apertures whereby said cone members frictionally retentively engage said peripheries of said apertures, the opposite ends of said cones in each of said plates being tightly nested and stacked in the base ends of the cones in the next adjacent plate whereby said opposite ends of said cones frictionally retentively engage said base ends of said cones in the next adjacent plate, and means for fixedly securing said plates in parallel relation to bind said cone members in stacked relation said means for fixedly securing said plates comprising mechanical securement means, the base ends of the cones in each of said plates abutting and engaging the surface of the next adjacent plate whereby the base ends of said cones extend around the periphery of an aperture in the next adjacent plate, said stacked cone members forming a plurality of stacks generally perpendicular to said spaced apart plates, and said spaced apart plates forming a plurality of air passageways between said plates with said stacks within said passageways.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |