Patents Assigned to HMD Seal/Less Pumps Limited
  • Patent number: 11913457
    Abstract: A magnetic pump comprising: a pump body supporting an output shaft on a wet side of the pump and having an inlet and at least one outlet for pumped fluid; an input drive element on a dry side of the pump, at least one magnet for coupling the input and output shafts such that motion of the input shaft causes motion of the output shaft, a pressure containing structure mounted on the pump body for separating the dry and the wet sides, wherein the pump includes: one or more pathways through which pumped fluid can pass so as to lubricate one or more moving parts within the pressure containing structure, and a monitoring port/channel through which one or more properties of pumped fluid passing through the one or more pathways can be sensed.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: February 27, 2024
    Assignee: HMD Seal/Less Pumps Limited
    Inventor: David Clark
  • Patent number: 11384764
    Abstract: A containment shell for a magnetic pump, the shell comprising: a body section having a continuous side wall defining a chamber, and an end wall closing the chamber at one end, the chamber being open at the other end, wherein the body section and the end wall are integrally formed from a matrix material in which chopped carbon fibre material is distributed.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: July 12, 2022
    Assignee: HMD Seal/Less Pumps Limited
    Inventor: Martin Stuart
  • Patent number: 5248940
    Abstract: An apparatus for measuring change of position of a rotor in a drive system having a drive rotor and a driven rotor generally concentrically mounted with respect to the drive rotor, the drive and driven rotors being magnetically coupled together. The apparatus includes a conduction device stationarily mounted between the rotors and a device for measuring the EMF (Electro Motive Force) produced in the conduction device as the rotors rotate. The apparatus also includes a device for determining, from the measurement, the relative position of the two rotors and/or the position of one of the rotors.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: September 28, 1993
    Assignee: HMD Seal/Less Pumps Limited
    Inventors: Brian M. Patience, David A. West, Palmer H. Beam