Patents Assigned to Atwood & Morrill Co., Inc.
  • Patent number: 5338496
    Abstract: A spaced apart pair of plates in a steam bypass conduit provide pressure reduction and desuperheating of the steam. The plates have holes, some of which are equipped with nozzles that discharge water axially at the nozzle exits or radially at the throats. The nozzles are formed by inserts that form annular spaces communicating with a network of water supply conduits in the plate. Water discharge jets communicate with the annular spaces.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: August 16, 1994
    Assignee: Atwood & Morrill Co., Inc.
    Inventors: Arthur J. Talbot, John M. Cowley
  • Patent number: 4770029
    Abstract: A fixture for testing and servicing a MSIV of a nuclear power generation plant includes a cover plate for bolting to the valve body and a support member extending from the plate for supporting the valve stem. A pressure cylinder attaches to the support member for loading the stem to conduct a leak rate test. Means are provided for pressurizing the valve body to perform a leakage test. Stem bearings spaced apart along the stem provide accurate stem alignment, and prevent bending of the stem under test loading. Seals between the fixture, the body and the stem permit pressurization of the valve body above the poppet, permitting a leak test of the MSIV without reassembly of the actuator structure. In another embodiment, a collar having an axially directed thrust face mounts on the stem and bears against a thrust bearing to permit rotation of the stem during assembly.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: September 13, 1988
    Assignee: Atwood & Morrill Co., Inc.
    Inventors: Arthur H. Webber, Herbert Cook