Abstract: A support for manual grease guns has a base and lever-restoring mechanism. Grease guns conventionally have a pumping head with a barrel and lever joined thereto for cycling through pumping and restoring strokes between restored and depressed extremes. The restored extreme has the lever and barrel flared apart. Conversely, since the pumping stroke closes the flare, the depressed extreme has the lever brought alongside the barrel. The base has ground-engaging feet as well as clamps for clamping the grease gun tightly by the barrel, preferably with the lever projecting away for pedal-style depression in a generally vertical plane by a user stepping on it. The lever-restoring mechanism links the lever to the base, and yields under the user's step while the lever moves through pumping strokes, but restores the lever toward the restored extreme therefor as soon as the user takes his or her step off the lever.

Abstract: A pipeline leak detection apparatus is provided for fluid dispensing system having a dispenser, a storage tank, and a pump and an electric cut-off valve arranged in hydraulic series with the outlet of the storage tank. The pipeline to be monitored extends between the cut-off valve and the dispenser. A control circuit that operates the cut-off valve such that the valve opens with use of the dispenser and closes with non-use in order to hydraulically isolate the storage tank and pump from the pipeline and dispenser during periods of non-use. The leak detection apparatus is connected in a by-pass loop around the pump. It includes a small pot or plenum, a float switch, and a return line for fuel to spill back into the storage tank. The plenum inlet is connected to a branch in the pipeline near the cut-off valve, and its outlet is connected to the return line to the storage tank. The float switch is mounted to the plenum so that its float extends into the plenum chamber.

Abstract: A method of detecting a leak in a liquid storage tank utilizes a mass test in which a sample mass of liquid is removed from the storage tank and weighed. After a period of time, another sample mass of liquid, taken at exactly the same location as the first, is removed from the storage tank, and then weighed and compared to the first sample mass to determine whether there is a leak in the storage tank.