A hydraulic reservoir finding particular application as a pressure reservoir for hydro-pneumatic resilient suspensions for vehicles in which the interior of a casing constituting the reservoir is divided by a movable deflectable separating wall or partition into a gas chamber and a liquid chamber, the casing being provided with a gas connection communicating with the gas chamber and a liquid connection communicating with the liquid chamber for supplying and removing gas and liquid into or from t...

A drainage reservoir for an underground watering system consisting of a sump substantially frusto conical in form having a plurality of apertures therein, said apertures comprising drainage valves which include valve members in connection with each of said apertures which yield to the pressure of water within said reservoir to open said apertures for pssage of said water through said apertures and which yield to subsurface water pressures to close said apertures against the entrance of subsurfac...

A sponge mop having a firm backed scrubbing surface and a mopping face on a sponge head and means whereby dirty water accumulated by the sponge head during mopping is pressed from the sponge head into a mop reservoir from which it may be poured into an available receptacle.

A cup forms an upper portion of a manually-operable pump associated with a container from which liquid is to be withdrawn in small amounts. A disc of substantial area is mounted in the lower portion of the cup in a fixed spaced relationship over an inlet opening and spaced from bottom and lower side wall portions of the cup. Liquid flowing through the inlet opening is first diverted radially outwardly by the disc, to flow through the space between the disc and the cup bottom, and is then diverte...

A method for measuring reservoir properties including skin factor and permeability thickness product of a porous earth formation with respect to injected fluid around a fluid injection well by rapidly increasing the rate of fluid injection to a new higher rate, maintaining injection substantially constant at this higher rate, and recording the variation with time of the fluid injection pressure as the injection rate is held substantially constant.

A discharge arrangement for a liquid reservoir such as a toilet cistern, in which the cistern is of an airtight type. The arrangement of the present invention is that the cistern is provided with a liquid outlet port with a compressible seat surrounding the port. The seat includes a liquid passageway with a liquid inlet hole, a vent hole and a liquid outlet hole. Sealing means, such as floatable ball, is adapted to mate in sealing arrangement with the seat. There is also provided suitable means ...

An upper gas chamber and a lower pressure fluid chamber separated from each other by a diaphragm deflectable in direction of the gas chamber in response to pressure fluid admitted into the lower chamber. The diaphragm comprises a peripheral portion which, by means of an annular element, is sealingly pressed against the inner wall of the reservoir. The annular element has an arcuately curved circumferential guide surface which faces towards the fluid pressure chamber such that upon admittance of ...

The inneity of mobile organic reservoir fluids, i.e., their origin or lack of origin in the particular source rocks associated with a reservoir formation, is determined by isolating these mobile organics from relatively immobile organics and inorganic carbonaceous matter and determining the relative concentrations of carbon-12 and carbon-13 isotopes therein, isolating the relatively immobile indigenous organic matter from the relatively mobile organics and inorganic carbonaceous matter and evalu...

A reservoir assembly for use as a fluid storage component in systems for actuating hydraulically operated devices. An apertured diffuser is disposed within the reservoir for reducing the velocity of fluid returning to the reservoir without decreasing the rate of fluid flow. In one aspect of the invention, the reservoir assembly is made entirely of a non-corrosive material to prevent contamination of the hydraulic fluid. To this end, for example, the reservoir comprises a one piece, seamless plas...

A reservoir, for example, for liquids capable of being immersed under water and being formed of prestressed concrete. The reservoir has a cylindrical body closed at its ends and lying with its axis horizontal. The reservoir is provided with two partitions which extend from the interior of the body outwards and each of which presents a support foot such that the reservoir can be supported on an emplacement under water at only two points along its length, the partitions inside the body are provide...