Abstract: A device is provided for determining the physical qualities, such as amount, ullage, temperature, etc., of liquids, through an operable service hatch, of such tanks containing the liquid and vapors of the liquid and/or an inert gas above the liquid without lowering the pressure or allowing the pressurizing gas or vapors to escape to the atmosphere.

Abstract: A static electric charge removal of dispersal coating for ullage tapes having an outer polymeric surface. The coating is formed of carbon black and is applied to the polymeric surface of the ullage tape to disperse therefrom any static electric charge which may be generated thereon when used for measurement purposes in large tanks which can build up a high static charge therein. The carbon black coating is preferably acetylene black formed on the tape and simultaneously anchored thereto by passing the tape near a fuel rich acetylene flame. Any excess coating which is not anchored to the tape can be removed by wiping or other similar operation.The method of this invention can be used to apply an acetylene black coating to polymeric items such as fluorocarbon wire, tape, or other forms which can be passed in close proximity to a fuel rich acetylene flame.

Abstract: A portable device is provided for determining the physical qualities, such as amount, ullage, temperature, etc., of liquids in closed tanks containing the liquid and vapors of the liquid and/or an inert gas above the liquid without lowering the pressure or allowing the pressurizing gas or vapors to escape to the atmosphere.

Abstract: An ullage measuring device and an accurate method of using an ullage tape to find the surface of a liquid in a tank without visual sighting. The ullage device includes a composite tape formed of a tape from which readings of ullage may be obtained and electrical conductors to activate circuitry for rendering a crystal operative to transmit sonic energy to another crystal adapted to receive sonic energy and to activate one of the conductors to provide an audible indication at a point remote from the surface of the liquid when the effective end of the composite tape has reached the surface of the liquid.

Abstract: A quick acting coupling for coupling together heavy cargo pipes which includes releasable locking means to permit rotation of a cam element in one direction and prevent rotation in an opposite direction, and upon release of this locking means to permit rotation in the opposite direction.