Measuring and testing – Fluid pressure gauge – Mounting and connection
Reexamination Certificate
1998-03-26
2001-03-13
Oen, William (Department: 2855)
Measuring and testing
Fluid pressure gauge
Mounting and connection
Reexamination Certificate
active
06199432
ABSTRACT:
The invention relates to fluid pressure testing and more particularly to monitoring fluid pressure remote from the sensing point.
In gas mains, for example, it is necessary from time to time to measure pressure in the main at one or more particular locations. This normally requires excavation in the street and reinstatement thereafter causing disruption and costly work. The present invention is concerned with avoiding such procedures.
According to the invention there is provided apparatus for providing remote testing of fluid pressure within a main pipe and comprising coupling means for coupling a pressure testing device to an auxiliary pipe connected to the main pipe, and elongate means for providing an independent passage between the coupling means and the main pipe via the bore of the auxiliary pipe to provide a pressure sensing path adjacent the main pipe to detect main pipe fluid pressure.
Further according to the invention there is provided a method for remote testing of fluid pressure within a main pipe and comprising coupling a pressure testing device to an auxiliary pipe connected to the main pipe, providing an independent passage between the coupling testing device and the main pipe by utilising elongate means fed through the auxiliary pipe bore to allow pressure testing of the main pipe pressure to be effected.
Still further according to the invention there is provided a pipe coupling device including a body with a bore therethrough, means for connecting the body with a first pipe, means for connecting the body to a second pipe to allow fluid flow between the first and second pipes in use, and means for receiving a catheter or the like so as to allow a portion of the catheter to pass into the first or second pipe through the coupling device bore, in use.
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BG plc
Holt William H.
Oen William
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