Patents Assigned to Protector Safety Limited
  • Filter cartridge
    Patent number: 4867770
    Abstract: A filter cartridge incorporates a layer of granular material (4d) for adsorbing gases and/or vapors retained in position by porous retaining elements (4e, 4f, 4g). The cartridge includes a housing (2) and a closure element (3) for closing the housing. The closure element (3) is associated with a compression element (10) which during assembly of the closure (3) on the housing (2) acts against the retaining elements (4e, 4f, 4g) to compress the granular material (4).
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: September 19, 1989
    Assignee: Protector Safety Limited
    Inventor: John R. Feeney