Patents Assigned to The Haigh Engineering Company Limited
  • Roller assembly
    Patent number: 8506463
    Abstract: A roller assembly (40) including a roller (46) fixed to a flange bearing (48) which is engaged with a roller sleeve (50) and rotatable relative to it, the roller (46), the flange bearing (48) and the roller sleeve (50) all being retained on a mounting screw (51) between a nut (58) threaded onto the screw (51) and a washer (52) mounted on the nut (51).
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: August 13, 2013
    Assignee: The Haigh Engineering Company Limited
    Inventors: Nigel R C Shepherd, Gary P. Deaville
  • Screen For A Bandscreen
    Publication number: 20120187035
    Abstract: A screen for a bandscreen including a support frame and two or more perforated screening panels each of which is releasably attached to the support frame so as to be independently detachable from the support frame.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Applicant: The Haigh Engineering Company Limited
    Inventor: Nigel Shepherd
  • ROLLER ASSEMBLY
    Publication number: 20100062920
    Abstract: A roller assembly (40) including a roller (46) fixed to a flange bearing (48) which is engaged with a roller sleeve (50) and rotatable relative to it, the roller (46), the flange bearing (48) and the roller sleeve (50) all being retained on a mounting screw (51) between a nut (58) threaded onto the screw (51) and a washer (52) mounted on the nut (51).
    Type: Application
    Filed: September 4, 2009
    Publication date: March 11, 2010
    Applicant: THE HAIGH ENGINEERING COMPANY LIMITED
    Inventors: Nigel R C Shepherd, Gary P. Deaville
  • Pressure switch actuator
    Patent number: 4209678
    Abstract: A switch, particularly for use in controlling the comminuter motor of a waste disposal unit, which provides pressure pulses, for use in the electrical control circuit of the motor, by compressing one or more resilient members in sequence when operated.
    Type: Grant
    Filed: April 12, 1977
    Date of Patent: June 24, 1980
    Assignee: The Haigh Engineering Company Limited
    Inventor: Dennis M. Hussey
  • Pressure switch actuator
    Patent number: 4124789
    Abstract: A motor control circuit for the comminuter motor of a waste disposal unit, incorporating an air sack around the inlet to the waste disposal unit, and a pressure responsive electrical switch, the motor being de-energized in absence of a pressure signal from the sack caused by the insertion of a safety guard in the inlet.
    Type: Grant
    Filed: April 12, 1977
    Date of Patent: November 7, 1978
    Assignee: The Haigh Engineering Company Limited
    Inventor: Graham M. Preece
  • Electrical control circuits
    Patent number: 4117383
    Abstract: An electrical control circuit for a single phase induction motor which uses relay operated reversing contacts to ensure that the motor reverses its direction of rotation upon each energization thereof.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: September 26, 1978
    Assignee: The Haigh Engineering Company Limited
    Inventors: Dennis Malcolm Hussey, William Martin John Coleman