Patent ID: 9212657
Filing Date: 2015-12-15
Classification: B24C,B26F,F04B,H02K

Abstract:
1. An ultra-high pressure pump for water jet cutting apparatus comprising: a motor adapted to axially rotate a hollow rotor shaft in alternating directions, wherein one end of the hollow rotor shaft is supported by an annular bearing, the motor comprising: wherein one piston is coupled to one end of the screw and the other piston is coupled to the other end of the screw, wherein, in operation, the alternating rotation of the hollow rotor shaft causes reciprocal linear displacement of the pair of pistons to pressurize water in each pumping chamber to equal pressures greater than 50,000 psi, and expelling the pressurized water on each stroke with a delivery of between 0.5 and 1 gallon per minute.