Abstract: Methods and systems for monitoring privileged user access of a database using a computer having at least one processor are provided. The system monitors database transactions. If a transaction is made by a privileged user, the system records information relating to the transaction in an audit database and/or in an audit file. If a transaction is made by a terminated or otherwise unauthorized privileged user, the system can be adapted to alert management of a possible security breach.

Abstract: A motor comprising a shaft with four racks which translate linear actuation of the racks to rotational motion of the shaft through pinions secured to sprag clutch assemblies. Motion of the rack assemblies is preferably offset to maintain a substantially constant rotation of the shaft during operation of the motor. The motor uses a pair of primary fluid expansion chambers to generate linear actuation of a first pair of racks, and a pair of secondary expansion chambers to generate linear actuation of the remaining racks.

Abstract: A reversing valve for a compressed air membrane pump in which an equilibrium state of the main piston in the neutral position, leading to stoppage of the pump, is prevented by disposing the main system piston and the pilot system piston immediately adjacent to one another.

Abstract: A liquid pressure booster includes a head member with a low-pressure inlet connectable to a liquid source at mains pressure, a high-pressure outlet connectable to the object to be tested, and a central bore, a compound cylinder constituted by a first, upper, relatively small-diameter portion fluid-tightly attached to the head member and a second, lower, relatively large-diameter portion contiguous with the upper portion and closed off at its lower end by a bottom plate having a drain opening.

Abstract: A double diaphragm pump includes a connecting shaft for interconnecting the opposed diaphragms mounted in the pump body for reciprocal movement relatively thereof and a pilot valve sleeve telescoped over the shaft and movable axially in response to movement of the connecting shaft and having a plurality of axially directed circumferentially disposed recesses thereon for fluid transfer through the pilot valve cavity. A spool valve assembly is also carried by the body in a cavity which is in selected fluid communication with a source of air pressure, the pilot valve, the atmosphere and the pressure chambers of the pump. The pilot valve sleeve also has at least one projecting annular rib which engages the usual O-rings of the cavity in which the connecting rods and pilot valve sleeve reciprocate for assisting movement past the O-rings in response to pressure from the spool valve.

Abstract: An air pressure operated automatic lubricating gun is simplified in its conents and in its assembly to such an extent that this automatic gun can compete economically with manually operated lubricating guns. This improvement has been made possible by locating an air pressure chamber in a main pipe above the high pressure pump and below the air pressure operated motor. The riser pipe for the lubricant is arranged off-center to the central longitudinal axis so as not to interfere with the operation of the centrally located pump piston. The riser pipe passes through the air pressure chamber for a compact assembly. The air pressure supply control means are arranged in the air pressure chamber.

Abstract: A proportional mixing system with water motor drive is provided for mixing water with one or more chemicals in selected proportions. The system is completely water driven and automatically meters out a set amount of water for mixing in desired proportion with one or more chemicals, each chemical being separately pumped by an individual pump. All pumps are linked to the water motor drive and may be individually set at a proportion to be mixed, or any individual pump may be set to an off position.