Valve assemblies having valve seats and/or valve members with conical surfaces which cause an included O-ring to roll upon and wedge between the valve member and the seat for reliably closing the valve.
申请公布号
US4844414(A)
申请公布日期
1989.07.04
申请号
US19880202208
申请日期
1988.06.03
申请人
ANTHONY INDUSTRIES, INC.
发明人
SABLE, CHESTER A.;MALDARELLI, LAWRENCE V.;CHURCH, HENRY;GRABOFF, ROY
