Patents Assigned to Pump Engineering, Inc.
  • Patent number: 6406635
    Abstract: A coolant supply and recycle system and method for cleaning used machine tool coolant and returning it to the machine tools for reuse. A tank receives used coolant containing metal chips from one or more machine tools. A pump is in communication with the tank, and is operative to extract used coolant from the tank into an inlet portion of the pump. Within the inlet, the pump includes an inducer-chopper operative to prime the pump and to chop the metal chips to effect a reduction in their size prior to discharging the used coolant from the pump. An impeller is recessed in the pump above the inducer-chopper to create a vortex of the used coolant and sized-reduced metal chips and force them from the pump discharge. The pump discharge portion is connected to a filter for removing the metal chips and supplying the clean coolant back to the machine tools.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: June 18, 2002
    Assignee: Ruthman Pump and Engineering, Inc.
    Inventors: William L. Smith, Charles D. Brann
  • Patent number: 6139740
    Abstract: A reverse osmosis water purification system comprises an impulse turbine operatively connected to a source of water to be purified. A feed pump is connected to the impulse turbine to supply a source of high pressure water to be purified. A first purification membrane chamber is connected to the feed pump to receive a supply of high pressure unpurified water from the feed pump. The first purification membrane chamber has an outlet for discharging purified water and a discharge opening for discharging high pressure unpurified water. A hydraulic turbocharger has a turbine end T and a pump end P. The pump end P has an inlet for receiving the high pressure unpurified water from the first purification membrane chamber and an outlet which discharges the high pressure unpurified water. A second purification membrane member chamber is connected to the outlet of the pump end P of the hydraulic turbocharger for receiving the high pressure unpurified water.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: October 31, 2000
    Assignee: Pump Engineering, Inc.
    Inventor: Robert A. Oklejas
  • Patent number: 6036435
    Abstract: A thrust bearing for a rotating member that is subject to axial forces causing movement in an axial direction of a rotating member. A sealing surface is positioned on at least a portion of the rotating member. A bearing is positioned adjacent the rotating member. A sealing face is positioned on the bearing. The sealing face is disposed to be in opposed relationship with the sealing surface on the rotating member. A bearing space is located between the sealing face and the sealing surface. A fluid reservoir is positioned in the bearing and is in communication with the bearing space. A passageway extends through the bearing to a volute adjacent the rotating member to supply a fluid to the fluid reservoir. A plurality of pockets are positioned on the sealing face of the bearing. The pockets are positioned to be in communication with the fluid reservoir. A plurality of wedge shaped depressions are positioned on the sealing face of the bearing.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: March 14, 2000
    Assignee: Pump Engineering, Inc.
    Inventor: Robert A. Oklejas
  • Patent number: 5951169
    Abstract: A thrust bearing for a rotating member that is subject to axial forces causing movement in an axial direction of a rotating member. A sealing surface is positioned on at least a portion of the rotating member. A bearing is positioned adjacent the rotating member. A sealing face is positioned on the bearing. The sealing face is disposed to be in opposed relationship with the sealing surface on the rotating member. A bearing space is located between the sealing face and the sealing surface. A fluid reservoir is positioned in the bearing and is in communication with the bearing space. A passageway extends through the bearing to a discharge region adjacent the rotating member to supply a fluid to the fluid reservoir. A plurality of pockets are positioned on the sealing surface of the rotating member.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: September 14, 1999
    Assignee: Pump Engineering, Inc.
    Inventors: Robert A. Oklejas, Eli Oklejas, Jr.