Patents Assigned to Lombard Pressings Limited
  • Surge suppression apparatus
    Patent number: 6491065
    Abstract: A surge suppression apparatus includes a housing, and a flexible diaphragm. The housing is divided into first and second sub-chambers by the diaphragm. The first sub-chamber is connected to a supply of liquid under pressure. The second sub-chamber contains a gas under pressure. The apparatus further comprises a gas reservoir in communication with the second sub-chamber so as, in use, to provide an effective volume which is substantially larger than that of the second sub-chamber.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: December 10, 2002
    Assignee: Lombard Pressings Limited
    Inventor: John Anthony Rogers
  • Surge suppression apparatus incorporating a pressure regulation assembly
    Patent number: 6325105
    Abstract: A surge suppression apparatus including a chamber divided into first and second sub-chambers by a diaphragm, a diaphragm follower maintained in contact with the diaphragm and, in use, following the movement of the diaphragm in response to a pressure differential between the first and second sub-chambers, the position of the diaphragm follower relative to the chamber wall determining the existence or otherwise of a communication pathway between the second sub-chamber and a gas inlet and the second sub-chamber and a gas outlet.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: December 4, 2001
    Assignee: Lombard Pressings Limited
    Inventor: John Anthony Rogers