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A reciprocating compressor or pump features a manifold arranged not only to define a hollow interior for receiving fluid discharged from a plurality of cylinders but also to define a base or frame on which the cylinders are carried. Unique valves formed in part by flexible material reduces the likel

A reciprocating compressor or pump features a manifold arranged not only to define a hollow interior for receiving fluid discharged from a plurality of cylinders but also to define a base or frame on which the cylinders are carried. Unique valves formed in part by flexible material reduces the likelihood of fatigue and increases efficiency by retaining less heat relative to conventional reed valves. A compressor or pump mounted at an end of a handle extending parallel to a motor housing likewise extending from the compressor or pump provides an easy to carry portable assembly. A fan mounted between a motor and a compressor pulls air through the compressor inlet to both cool the motor and feed the compressor. A portable tool system powers both pneumatic and electric tools. Connecting rod structures for radial compressors or pumps provide improved strength and easier assembly.

대표청구항 ▼

The invention claimed is: 1. A reciprocating air compressor comprising:an electric motor having a driveshaft arranged for driven rotation about an axis;a plurality of cylinder liners each having a cylindrical bore therein and each extending radially away from the axis, the plurality of cylinders lin

The invention claimed is: 1. A reciprocating air compressor comprising:an electric motor having a driveshaft arranged for driven rotation about an axis;a plurality of cylinder liners each having a cylindrical bore therein and each extending radially away from the axis, the plurality of cylinders liners including at least three cylinder liners spaced around the axis;a drive system comprising a central body carried eccentrically on the driveshaft and a plurality of connecting rods each connected at one end thereof to the central body;a plurality of pistons each being connected to a respective connecting rod at a second end thereof opposite the central body and each being sealed against an interior wall of a respective cylinder liner, the drive system being configured to effect movement of the central body under rotation of the driveshaft to move the piston outward along the cylinder away from the axis of the driveshaft to a fully extended position furthest therefrom and then pull said piston back radially inward toward the axis to a fully retracted position nearest thereto;an intake valve associated with each cylinder liner and arranged to open as the piston retracts toward the fully retracted position and to close as the piston extends away therefrom;an exhaust valve associated with each cylinder liner and comprising at least one exhaust port extending through the cylinder liner and a resilient band disposed circumferentially about the cylinder liner, the band being resiliently stretchable about the respective cylinder liner by fluid pressure exerted on the band through the exhaust port during movement of the piston toward the fully extended position;an annular manifold having a hollow interior channel that extends around the axis and into which the cylinder liners partially extend to position the exhaust valves inside the hollow interior channel to communicate the hollow interior channel of the manifold with the cylindrical bore of each cylinder liner when the exhaust valve associated therewith is open; anda battery type electrical supply connected to the electric motor to provide power thereto to effect rotation of the driveshaft to drive the reciprocal motion of the pistons along the cylindrical bores of the cylinder liners;wherein the manifold defines a rigid support on which the electrical supply, the electric motor, the plurality of cylinder liners and the drive system are carried.