Heat exchange – Structural installation – Heating and cooling
Reexamination Certificate
2007-02-27
2007-02-27
Duong, Tho (Department: 3744)
Heat exchange
Structural installation
Heating and cooling
C165S152000, C165S170000
Reexamination Certificate
active
10533002
ABSTRACT:
The rib and the block are applicable in heating appliances construction. They have increased operational safety and heat transfer velocity. The rib comprises an upper (1.1) and lower hole (1.2), a joining profile (2), a first (3) and second (4) internal foldings, a third intermediate (5) and a fourth external (6) folding, which ends in a fifth reversed folding (7). The fourth external folding (6) and the fifth reverse folding (7) extend from below to the end of their respective chamfers (8), and at the upper side of the rib, together with the second (4) and the third (5) folding, they connect its two vertical walls via two chamfers (9). Centrally in relation to the upper hole (1.1), on its both sides, and above, on the surface of the second internal folding4and the third intermediate folding (5), there are spherical concavities (10), and on both sides of the lower hole (1.2) there are similar spherical concavities (11). The radiator element (12) consists of a pair of ribs, and the radiator block consists of several such elements.
REFERENCES:
patent: 692365 (1902-02-01), Safford
patent: 787845 (1905-04-01), Kinnear
patent: 1975957 (1934-10-01), Kuenstler
patent: 2651506 (1953-09-01), Lehmann
patent: 4036287 (1977-07-01), Perani
patent: 5685365 (1997-11-01), De′Longhi
patent: 6289175 (2001-09-01), De′ Longhi
patent: 2530260 (1977-01-01), None
patent: 0556433 (1993-08-01), None
patent: 0797056 (1997-09-01), None
patent: 0949460 (1999-10-01), None
patent: 0965801 (1999-12-01), None
patent: 2118706 (1983-11-01), None
Search Report for PCT/BG03/00039.
Duong Tho
Ficosota OOD
Marshall & Gerstein & Borun LLP
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