Abstract: A system (100) is provided for calculating the vapor pressure for a liquid whose composition is unknown. The liquid to be tested is passed through a gas/liquid separator (120) at a substantially constant flow rate and at a predetermined temperature and pressure. The liquid being passed through separator (120) evolves gas which is passed through a gas meter. The liquid passing from separator (120) passes through a flow meter (134). The evolved gas is also coupled to a gas chromatograph (160) for measurement of the gas composition. The measurement data is input to a processor (180) for converging an initial assumed inlet oil composition, with the measured gas composition, gas flow rate, and liquid flow rate using representative constituent equilibrium data to derive the composition of the inlet liquid stream. The converged liquid composition data is then utilized for calculating the vapor pressure or vapor emissions of the liquid.

Abstract: An electric periodontal massager having a housing and a first shaft rotatably disposed therein about an axis. An electric motor is provided for rotating the shaft and a crank is disposed on the other end of the shaft. A second shaft having a rubber or resilient massaging tip thereon is provided for periodontal usage. The other end of the second shaft is resiliently attached to the housing. A resilient linkage has one end thereof attached to the crank of the first shaft and the other end thereof disposed around an intermediate portion of the second shaft whereby rotation of the first shaft by the electric motor causes the first end of the second shaft and thereby the resilient massaging tip to move for applying chemicals to and massaging gum tissue.

Abstract: Disclosed is a method for combusting hydrocarbonaceous fuels such that minimal amounts of NO.sub.x are produced. This is accomplished by combusting the fuel in a first stage at substoichiometric conditions followed by a second stage combustion at conditions to complete combustion wherein the temperature of the combustion gases exiting the first stage is specifically controlled by a heat transfer device so that they are at least 500.degree. F. lower than the combustion temperature of the first stage but not lower than the ignition temperature of the combustion gases exiting the heat transfer device.

Abstract: A displacement pump has a pump chamber connected with an inlet valve chamber and an outlet valve chamber. The chambers are arranged so that a cleaning tool has a direct cleaning path through the inlet valve chamber, its connection to the pump chamber, the connection of the outlet valve to the pump chamber and the outlet valve.

Abstract: A positive displacement pump for slurries has a plunger reciprocating in a receprocation direction a plunger chamber. Gravity biased inlet and outlet valves control the egress and egress of slurries to the chamber. Special fittings between the valves and the chamber allow the valves to be oriented at one of four directions separated by 90.degree. angles so that the valves may be oriented so that flow is upwardly therethrough in any attitude of the plunger chamber.

Abstract: A positive displacement pump has a cylinder closed at one end and a plunger projecting from the opposite end reciprocable therein. Rings and packing are inserted at the opposite end to guide the plunger and are designed to provide that the plunger has a material clearance from the cylinder walls. To use a different sized plunger the rings and packing are designed for easy removal at the end of the cylinder and for replacement by rings and plunger corresponding to the new plunger section. A convenient manual linkage is provided for manual operation of the pump with the cylinder upright. A convenient horizontal frame is provided for the pump with a drive means for the pump used with the cylinder in a horizontal position.

Abstract: A process for removing diamondoids from a stream of natural gas. In this process, contact between a solvent liquid and natural gas containing diamondoids occurs in a stepwise counter current cascaded fashion. The stepwise counter-current cascaded arrangement substantially improves the removal of the light diamondoids (adamantane). The contacting (mixing) of the gas and solvent liquid allows the liquid to absorb the diamondoids contained in the gas. The gas and liquid are then separated thereby removing the diamondoids from the gas. In the preferred embodiment, a multi -staged trayed solvent contractor tower is used to facilitate the stepwise counter current cascaded contacting in the gas production process immediately after the separation of the gas from any liquid in the gas. The partially saturated diamondoid liquid solvent from the tower can also be mixed with the gas at a point before the separation of the gas from any reservoir formation liquid in order to enhance the diamondoid removal process.