HERBERT COOK
Engineering in Pt Of Pines, MA
License number
Massachusetts 10981
Issued Date
Sep 23, 1959
Expiration Date
Jun 30, 1996
Type
Mechanical Engineer
Address
Address
Pt Of Pines, MA 02151
Professional information
Valve Testing Method And Device
US Patent:
4770029, Sep 13, 1988
Filed:
Aug 21, 1986
Appl. No.:
6/898532
Inventors:
Arthur H. Webber - Amesbury MA
Herbert Cook - Revere MA
Herbert Cook - Revere MA
Assignee:
Atwood & Morrill Co., Inc. - Salem MA
International Classification:
G01M 328
US Classification:
73 46
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.
Closing Assist For Valves
US Patent:
4024884, May 24, 1977
Filed:
Feb 9, 1976
Appl. No.:
5/656666
Inventors:
Norman F. Prescott - Wenham MA
Herbert Cook - Revere MA
Herbert Cook - Revere MA
Assignee:
Atwood & Morrill Co. - Salem MA
International Classification:
F16K 3112
US Classification:
251 38
Abstract:
A shutoff valve in a line containing fluid under pressure which after being closed is held closed by another fluid under pressure. The other fluid is one such as air which is available at the valve.