A pump mechanism for vacuum sealing an airtight cavity formed by a container and a lid, including a bore having a first one-way seal allowing air from the airtight cavity to enter the bore and blocking air inside the bore from returning to the airtight cavity and a second one-way seal allowing air inside the bore to leave the bore without returning to the airtight cavity and blocking air outside of the bore from entering the bore, a piston disposed inside the bore, and a chamber of air enclosed by the bore, the first and second one-way seals, and the piston, wherein actuation of the piston in a first direction causes air to evacuate the airtight cavity and enter the chamber through the first one-way seal, and wherein actuation of the piston in a second direction causes air to exit the chamber through the second one-way seal.

A pump mechanism for vacuum sealing an airtight cavity formed by a container and a lid, including a bore having a first one-way seal allowing air from the airtight cavity to enter the bore and blocking air inside the bore from returning to the airtight cavity and a second one-way seal allowing air inside the bore to leave the bore without returning to the airtight cavity and blocking air outside of the bore from entering the bore, a piston disposed inside the bore, and a chamber of air enclosed by the bore, the first and second one-way seals, and the piston, wherein actuation of the piston in a first direction causes air to evacuate the airtight cavity and enter the chamber through the first one-way seal, and wherein actuation of the piston in a second direction causes air to exit the chamber through the second one-way seal.

An air suspension system includes an air suspension, a compressor, a dryer apparatus, and so forth. The dryer apparatus includes a dryer case, an inner cylinder, a first inlet port, a first outlet port, a first desiccant, an outer cylinder, a second inlet port, a second outlet port, a second other-end side filter, a second desiccant, and so forth. The first desiccant comprises a molecular sieve, for example, which exhibits high water adsorption performance at high temperature. On the other hand, the second desiccant comprises silica gel, for example, which exhibits high water adsorption performance at low temperature.

A system that can eliminate engine combustion emissions in addition to raw and fugitive methane emissions associated with a gas compressor package. The system may comprise an air system for starting and instrumentation air supply; electrically operated engine pre/post-lube pump, compressor pre-lube pump, and cooler louver actuators; compressor distance piece and pressure packing recovery system; blow-down recovery system; engine crankcase vent recovery system; a methane leak detection system; and an overall remote monitoring system.

A system that can eliminate engine combustion emissions in addition to raw and fugitive methane emissions associated with a gas compressor package. The system may comprise an air system for starting and instrumentation air supply; electrically operated engine pre/post-lube pump, compressor pre-lube pump, and cooler louver actuators; compressor distance piece and pressure packing recovery system; blow-down recovery system; engine crankcase vent recovery system; a methane leak detection system; and an overall remote monitoring system.

Provided is a package-type compressor that can improve cooling performance for cooling a body unit and a control panel. The package-type compressor includes: a cooling fan accommodated in a fan duct to induce a flow of cooling air taken in through inlets and discharged through an outlet; a machine chamber that causes the cooling air taken in at the inlet to flow along a body unit; and a cooling duct that causes the cooling air taken in at the inlet to flow along the control panel. A center position of the suction port of the fan duct is offset away from the inlet and toward the inlet with respect to a center position of a drive shaft of a motor of the body unit.

Embodiments of the present invention relate to lifting and lowering loads more efficiently and also more economically than known systems. This invention is the continuous movement by mechanical means of a moving crank shaft force point to a desired advantageous position at a desired advantageous moment to achieve improved geometry resulting in a desired low torque factor for a reduced net torque when lifting or lowering an unbalanced load with a beam with a fulcrum and connected to a load and an effort. In one embodiment, a walking beam well pumping unit, the lifting and lowering of the well load can be caused by the reciprocating motion of a beam tipping on a fulcrum and with an effort force point continuously substantially vertically disposed with the moving crank shaft force point. Potentially reduced net torque might allow longer life speed reducers, smaller speed reducers, and longer reciprocating vertical stroke length.

The present invention describes a method for gauging energy used for producing a unit of mass or volume of compressed gas (Specific Energy Consumption) in relation to a common output flow in a multiple compressor system, said method comprising: from a first compressor, constructing an ideal specific energy consumption curve in the first compressor as a function of the output flow of the first compressor; and from a first compressor and a second compressor, constructing a combined ideal specific energy consumption specific energy consumption curve in the first compressor and the second compressor as a function of the combined output flow of the first compressor and the second compressor, wherein the method involves constructing one or several ideal specific energy consumption curve(s) for multiple combined compressors, in any combination(s), and wherein the method involves creating a theoretical operation model for the multiple compressor system.

A pump mechanism for vacuum sealing an airtight cavity formed by a container and a lid, including a bore having a first one-way seal allowing air from the airtight cavity to enter the bore and blocking air inside the bore from returning to the airtight cavity and a second one-way seal allowing air inside the bore to leave the bore without returning to the airtight cavity and blocking air outside of the bore from entering the bore, a piston disposed inside the bore, and a chamber of air enclosed by the bore, the first and second one-way seals, and the piston, wherein actuation of the piston in a first direction causes air to evacuate the airtight cavity and enter the chamber through the first one-way seal, and wherein actuation of the piston in a second direction causes air to exit the chamber through the second one-way seal.