Pipe joints or couplings – End to side or plate – Saddle-type clamp
Reexamination Certificate
2000-12-04
2003-11-18
Browne, Lynne H. (Department: 3679)
Pipe joints or couplings
End to side or plate
Saddle-type clamp
C285S376000, C285S401000, C285S415000
Reexamination Certificate
active
06648377
ABSTRACT:
BACKGROUND OF THE INVENTION
Saddles for liquid conduits, such as those utilized between a main line conduit and lateral lines of irrigation systems, as shown in
FIGS. 1 and 2
, comprise a saddle member
10
secured about a main line conduit
12
, and secured by a lower half-clamp
14
and threaded fasteners. The saddle has a threaded opening portion
15
to receive a threaded end portion of pipe
16
for connection for a lateral conduit extending from the main line. An opening
18
is drilled in the main conduit
12
for passage of water into pipe
16
. The lower securement may typically be formed by a clamp casting, by heavy wire or by a continuation of a U-bolt.
Such saddles generally do not encircle the main conduit completely. Bolt members
19
may typically be welded to a lower clamp
14
, resulting in a gap or space between the upper and lower clamping components.
Utilization of pipes formed of plastic, such as PVC, can result in substantial distortion, with resultant premature failure and leakage.
The present invention addresses such problems of the prior art by the provision of a gasketed bell-end member extending outwardly as a part of the saddle, and secured by engagement with a lower clamp member disposed about the main conduit.
Respective embodiments of the invention utilize respective components and devices for securing the pipe to the saddle to prevent disengagement.
REFERENCES:
patent: 710631 (1902-10-01), Tietz
patent: 896333 (1908-08-01), Smith
patent: 1221935 (1917-04-01), White
patent: 1326392 (1919-12-01), Combs, Jr.
patent: 1511723 (1924-10-01), Draver
patent: 1881508 (1932-10-01), Gredell
patent: 2042125 (1936-05-01), Roach
patent: 3967839 (1976-07-01), Dunmire
patent: 4527745 (1985-07-01), Butterfield et al.
patent: 4789189 (1988-12-01), Robertson
patent: 5183298 (1993-02-01), Harrington
patent: 5468025 (1995-11-01), Adinolfe et al.
patent: 6231083 (2001-05-01), Marandi
patent: 6302445 (2001-10-01), Kugele et al.
patent: 367363 (1963-03-01), None
Bochna David E.
Brown Boniard I.
Browne Lynne H.
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