Measuring and testing – With fluid pressure – Leakage
Patent
1974-04-10
1977-08-09
Queisser, Richard C.
Measuring and testing
With fluid pressure
Leakage
138 90, 285 93, G01M 328
Patent
active
040402894
ABSTRACT:
An arrangement and method is provided for testing the seal of a sewer lateral saddle connector assembly used in connecting a lateral or branch sewer pipe line into a sewer main at a point where there is no "T" or "Y" connector available.
The sewer branch saddle connector assembly consists of a cast iron saddle which is arranged to fit over a hole to be tapped in the sewer main. A 360.degree. circular rubber "O" ring sealing gasket is provided which is cemented in a retaining groove, on the underside of the sewer branch saddle connector assembly. A stainless steel strap, together with bronze T bolts and the attaching washers and nuts, secures the sewer branch saddle connector assembly to the sewer main, thus making a water-tight connection. The male connection end is shaped to accommodate all standard couplings and adaptors.
A sewer branch lateral tester is then positioned over the open end of the male connection and sealed thereto. Air pressure is then introduced into the sewer branch saddle connector assembly to ascertain if the rubber O ring sealing gasket has a leakage. If no pressure change is noticed after a predetermined period of time, then it is assumed the seal of the sewer branch saddle connector assembly to the sewer main is leakage proof and the entrance or opening for the sewer branch saddle connector assembly into the sewer main is then tapped.
REFERENCES:
patent: 963498 (1910-07-01), Bard
patent: 2050985 (1936-08-01), Trickey
patent: 2100884 (1937-11-01), Trickey
patent: 2462575 (1949-02-01), Walker
patent: 2693975 (1954-11-01), Smith
patent: 3364939 (1968-01-01), Valenziano
patent: 3459229 (1969-08-01), Croft
patent: 3558162 (1971-01-01), Ferrai et al.
Clark Joseph H.
Grove, Jr. Leslie W.
Finch Walter G.
Queisser Richard C.
Roskos Joseph W.
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