US 12,152,572 B2 · Integrated electric-to-hydraulic conversion machine

Abstract

An electric-to-hydraulic conversion machine includes an axial flux electric motor and a hydraulic pump. The motor includes a spindle, at least one rotor configured to rotate about the spindle, and at least one stator configured to drive rotation of the at least one rotor about the spindle. The hydraulic pump includes a piston block having a plurality of cylinders, a plurality of pistons each supported in one of the cylinders of the piston block, and a cam ring. The piston block is attached to the at least one rotor and is configured to rotate about the spindle with rotation of the at least one rotor. The cam ring is configured to radially drive the pistons during rotation of the piston block about the spindle, which drives a fluid flow.

Claims12

Dependent claims

An electric-to-hydraulic conversion machine comprising:

an axial flux electric motor comprising:
a spindle;
a first rotor configured to rotate about the spindle;
and
a first stator configured to drive rotation of the first rotor about the spindle;
and
a hydraulic pump comprising:
a piston block including a plurality of cylinders, the piston block attached to the first rotor and configured to rotate about the spindle with rotation of the first rotor;
a plurality of pistons, each cylinder containing one of the pistons;
and
a cam ring configured to radially drive the pistons during rotation of the piston block about the spindle, which drives a fluid flow for operating a hydraulic tool,
wherein:
the axial flux electric motor comprises a second rotor configured to rotate about the spindle;
and
the first stator is positioned between the first and second rotors, and is configured to drive rotation of the second rotor about the spindle.

12 more elements

Dependencies are inferred from the claim text.

Integrated electric-to-hydraulic conversion machine

Life of this patent

Integrated electric-to-hydraulic conversion machine

Life of this patent

Abstract

Claims12