Patents Assigned to Munro Concrete Products Ltd.
  • Patent number: 6968854
    Abstract: A manhole base or liner for directing the flow of liquid from a manhole inlet opening positioned in one of a plurality of possible locations in a manhole side wall to a manhole outlet opening in the manhole side wall, and a manhole having the base or liner. The base or liner includes a perimeter, an upper surface extending to the perimeter; and a liquid flow path formed in the upper surface.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: November 29, 2005
    Assignee: Munro Concrete Products Ltd.
    Inventors: John Mokrzycki, John Munro
  • Patent number: 6749746
    Abstract: An assembly for mounting in a side wall opening of a catch basin side wall and convertible into a trap for reducing the amount of matter being carried out of the catch basin by drainage water exiting the catch basin. The assembly includes a first trap member having a first wall and an outlet opening formed in the first wall and a second trap member releasably and sealingly engageable with the first trap member. The second trap member has a second wall spaced from the first wall when so attached. The assembly further includes a filter assembly releasably attachable to one of the first and second trap members, and having a filter member being made to capture matter entrained in drainage water.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: June 15, 2004
    Assignee: Munro Concrete Products Ltd.
    Inventor: John T. Mokrzycki
  • Patent number: 6132603
    Abstract: A trap for mounting in a catch basin having a wall with a cylindrical opening provided therethrough. The trap, which is designed to impede floating pollutants from leaving the catch basin, includes a front plate member with an outlet opening, a rear plate member with an inlet opening, and a connecting member extending between and connecting the front plate member and the rear plate member. The trap is arranged so that it can be mounted to the wall of the catch basin by inserting it through the cylindrical opening. A further aspect provides a trap having a front plate member with an outlet opening and a rear plate member with an inlet opening, and connecting means for mounting the plate members on the wall of the catch basin. Also provided is a process for constructing a trap in a side wall of a catch basin, comprising steps of boring a cylindrical opening through the side wall with a coring machine and securing a front plate member and a rear plate member to the side wall.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: October 17, 2000
    Assignee: Munro Concrete Products Ltd.
    Inventors: John T. Mokrzycki, Danniel Bailey