JOHN J QUARTARONE
Barber in Dedham, MA
License number
Massachusetts 610
Expiration Date
Dec 31, 1987
Type
Master Barber License
Address
Address
Dedham, MA 02026
Professional information
Elastomeric Cut-Off Valve
US Patent:
5878778, Mar 9, 1999
Filed:
Oct 9, 1997
Appl. No.:
8/954886
Inventors:
James R. Quartarone - Newport RI
John J. Quartarone - Dedham MA
John J. Quartarone - Dedham MA
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
F16K 1500
US Classification:
137517
Abstract:
A cut-off valve consists of a hollow rigid body and a flexible or supple forated plug. The plug defines a flow pate therethrough and is sealed in the rigid body between the rigid body's inlet and outlet to define a free volume in the rigid body between the inlet and the plug. The plug flexes or deforms in response to a differential pressure thereacross to collapse into the flow path when the differential pressure exceeds a predetermined threshold thereby stopping the flow.