Abstract: A pipeline leak detection system, includes, in combination, a pipeline; pressure sensors positioned at regular spaced intervals along the pipeline to monitor pressure within the pipeline; and a monitoring station receiving data from the pressure sensors. The monitoring station establishes a normal pressure profile of relative pressures recorded by the pressure sensors along the pipeline in the absence of a leak and issues an alarm should one of the pressure sensors provide data which is uncharacteristic of the normal pressure profile, indicating a leak in the vicinity of the one pressure sensor.

Abstract: A flange alignment pin which includes a non-ferrous pin with a magnetic positioner secured to and extending radially from the pin.

Abstract: A pipeline leak detection system, includes, in combination, a pipeline; pressure sensors positioned at regular spaced intervals along the pipeline to monitor pressure within the pipeline; and a monitoring station receiving data from the pressure sensors. The monitoring station establishes a normal pressure profile of relative pressures recorded by the pressure sensors along the pipeline in the absence of a leak and issues an alarm should one of the pressure sensors provide data which is uncharacteristic of the normal pressure profile, indicating a leak in the vicinity of the one pressure sensor.

Abstract: An improvement in a gyroplane having a keel, a mast which extends from the keel, and a rotor blade which rotates at the top of the mast. The improvement consists of a forshortened mast extending substantially vertically from the keel. The mast has a first end secured to the keel and a second end. A mast extension is provided having a first end and a second end. The first end of the extension is pivotally secured to the second end of the mast. A rotor blade is mounted to the second end of the extension. A number of selection positions are provided permitting the pilot to fix the extension in a preselected angular position with respect to the mast, whereby the center of gravity of the gyroplane is altered to maintain flight attitude having regard to the weight of the pilot and cargo.