Tapping sleeve or service clamp for use in attaching a branch pi

Details Tapping sleeve or service clamp for use in attaching a branch pi Tapping sleeve or service clamp for use in attaching a branch pi

1987-01-12

1987-11-24

Scanlan, Jr., Richard J.

Pipe joints or couplings

Connector for conduit housing electromagnetic line:

Having box and connector

285197, 285373, 277101, F16L 4100

Patent

active

047083735

ABSTRACT:
A tapping sleeve or service clamp has first and second semi-cylindrical sleeve members that fit around a pipe having a side opening, one sleeve member with a fixed side branch which is aligned with said opening. The sleeve member has lug members at opposite ends which are drawn together by bolts. The sleeve member with the side branch has a first inner liner gasket having end portions extending well beyond its straight end edges that are fully tapered to a feather edge and armour strips that located under the lugs when the sleeve members are around the pipe. A second inner liner gasket is provided for the second sleeve member and has tapered end portions that terminate at opposite straight end edges of the second sleeve member with a substantial thickness only somewhat less than the nominal thickness of the second gasket. As the bolts are tightened to draw the lugs together in tightening the sleeve members on a pipe, the tapered gasket portions under the ends of the second sleeve member bear against the armour strips to provide increase sealing power.

REFERENCES:
patent: 863887 (1907-08-01), Stuttle
patent: 1928316 (1933-09-01), Muto
patent: 2690193 (1954-09-01), Smith
patent: 2936186 (1960-05-01), Dunmire
patent: 3186744 (1965-06-01), Smith et al.
patent: 3379218 (1968-04-01), Conde
patent: 3558162 (1971-01-01), Ferrai et al.
patent: 4365393 (1982-12-01), Hauffe et al.
patent: 4391458 (1983-07-01), Blakeley

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