Pipe joints or couplings – Packed – Sleeve
Reexamination Certificate
2008-07-22
2008-07-22
Hewitt, James M (Department: 3679)
Pipe joints or couplings
Packed
Sleeve
C285S112000, C285S367000, C285S406000, C285S419000
Reexamination Certificate
active
07401819
ABSTRACT:
A preassembled mechanical pipe coupling having spacers is disclosed. The coupling has a plurality of interconnectable segments that straddle the ends of pipe elements to be joined. The segments have arcuate surfaces that engage outer surfaces of the pipe elements. Spacers, positioned between the segments, maintain them in spaced apart relation sufficient to allow the pipe elements to be inserted between the segments. The segments have adjustably tightenable connection members for connecting the segments and drawing them to one another. When the connection members are tightened and the effect of the spacers is overcome, the arcuate surfaces are brought into engagement with the outer surfaces of the pipe elements.
REFERENCES:
patent: 29731 (1860-08-01), Truss
patent: 1093868 (1914-04-01), Leighty
patent: 1987235 (1935-01-01), Janeway, Jr.
patent: 2020156 (1935-11-01), Muchnic
patent: 2473102 (1949-06-01), Krooss
patent: 2752173 (1956-06-01), Krooss
patent: 3905623 (1975-09-01), Cassel
patent: 3977705 (1976-08-01), Thiessen et al.
patent: 4391458 (1983-07-01), Blakeley
patent: 4403378 (1983-09-01), Engman
patent: 4471979 (1984-09-01), Gibb et al.
patent: 4506418 (1985-03-01), Viola et al.
patent: 4522434 (1985-06-01), Webb
patent: 4601495 (1986-07-01), Webb
patent: 4639020 (1987-01-01), Rung et al.
patent: 4722561 (1988-02-01), Heckethorn et al.
patent: 4861075 (1989-08-01), Pepi et al.
patent: 4966395 (1990-10-01), Hendrickson
patent: 5018548 (1991-05-01), McLennan
patent: 5058931 (1991-10-01), Bowsher
patent: 5280970 (1994-01-01), Straub
patent: 5758907 (1998-06-01), Dole et al.
patent: 6070911 (2000-06-01), Namikawa et al.
patent: 6302450 (2001-10-01), Dole et al.
patent: 6312025 (2001-11-01), Wolfsdorf
patent: 6533333 (2003-03-01), Radzik
Dole Douglas R.
Gibb John
Hewitt James M
Ripley Jay R
Synnestvedt & Lechner LLP
Victaulic Company
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