Pipes and tubular conduits – Longitudinally seamed – Permanent type seam
Reexamination Certificate
2007-09-17
2009-11-03
Hook, James F (Department: 3754)
Pipes and tubular conduits
Longitudinally seamed
Permanent type seam
C138S168000, C138S165000, C138S169000
Reexamination Certificate
active
07610938
ABSTRACT:
A cylindrical rod20is formed by bending sheet metal10so as to bond together a pair of edges12and14of the sheet metal10. The cylindrical rod20includes therein (i) convex portions16each of which protrudes from the edge12and includes a sub-portion whose width is larger at a side thereof more distant from the edge12than at a side thereof less distant from the edge12, and (ii) concave portions18which are formed on the edge14, have a shape complementary to the shape of the convex portions16, and are fitted into the convex portions16. A cylindrical rod which has high circularity and high linearity, in other words, which hardly has vertical and horizontal curves can be provided.
REFERENCES:
patent: 556819 (1896-03-01), Hartman
patent: 595035 (1897-12-01), Beranger et al
patent: 1863873 (1932-06-01), Quarnstrom
patent: 1999818 (1935-04-01), Mcintyre
patent: 2202909 (1940-06-01), Hufferd et. al.
patent: 2317198 (1943-04-01), Kasper
patent: 2362817 (1944-11-01), Haycock
patent: 3050649 (1962-08-01), Thomasko
patent: 3099238 (1963-07-01), Jones
patent: 3301992 (1967-01-01), Seeloff
patent: 3543227 (1970-11-01), Moulin
patent: 4490422 (1984-12-01), Pascher
patent: 4907626 (1990-03-01), Mori
patent: 5001816 (1991-03-01), Oetiker
patent: 6391414 (2002-05-01), Hjertman et al.
patent: 6634076 (2003-10-01), Hjertman et al.
patent: 2004/0140011 (2004-07-01), Kondou et al.
patent: 2007/0131015 (2007-06-01), Matsumura et al.
patent: 55-43360 (1980-03-01), None
patent: 11-156440 (1999-06-01), None
patent: 2004-1003 (2004-01-01), None
Hashizume Hiroshi
Nomura Norio
Takashima Nagamitsu
Yanokura Itaru
Hook James F
Seiko Epson Corporation
Sughrue & Mion, PLLC
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