초록 ▼

A female coupling member for a low-spill, quick-disconnect coupling where a male coupling member has a valve with a conical head projecting axially forward of a forward end of a body of the male coupling member. The female coupling member includes a body having an axially-extending internal cavity w

A female coupling member for a low-spill, quick-disconnect coupling where a male coupling member has a valve with a conical head projecting axially forward of a forward end of a body of the male coupling member. The female coupling member includes a body having an axially-extending internal cavity with a forward end dimensioned to receive the body of the male coupling member. An annular piston sleeve is spring-biased forwardly within the internal cavity of the female body. A radially-inward projecting annular valve seat in the female body separates a rear cavity portion of the internal cavity from a forward cavity portion. A valve stem assembly is slideably received within the internal cavity of the female body. The valve stem assembly includes i) a poppet valve dimensioned to be sealingly seated forwardly against the valve seat in the female body when the female coupling member is in an uncoupled condition; and ii) a valve stem portion connected to the poppet valve and extending forward of the poppet valve. The valve stem portion includes an enlarged valve head sealingly mating with a valve seat on the piston sleeve when the female coupling member is in the uncoupled condition. The valve head includes a forwardly-opening conical cavity dimensioned to closely receive the conical valve head of the male coupling member. The male coupling member axially-displaces the piston sleeve and the valve stem assembly rearward in the female body away from their respective valve seats when the male coupling member is inserted into the female coupling member to provide a flow path through the female coupling member.

대표청구항 ▼

[ What is claimed is:] [17.]17. A low-spill, quick-disconnect coupling, comprising:i) a male coupling member having a body with an internal cavity and a spring-biased valve slidable within the internal cavity with a conical valve head projecting forwardly of a forward end of the male body; andii) a

[ What is claimed is:] [17.]17. A low-spill, quick-disconnect coupling, comprising:i) a male coupling member having a body with an internal cavity and a spring-biased valve slidable within the internal cavity with a conical valve head projecting forwardly of a forward end of the male body; andii) a female coupling member having an axially-extending internal cavity with upstream cavity portion, and a downstream cavity portion having a forward open end receiving the male coupling member;a cylindrical piston sleeve slideably received within the downstream cavity portion of the body, the piston sleeve having an annular surface facing the forward end of the female body and in flush engagement with the forward end of the male body;a spring urging the sleeve toward the forward end of the female body;a radially-inward projecting annular valve seat of the female body separating the upstream cavity portion from the downstream cavity portion;a valve stem assembly slideably received within the internal cavity, the valve stem assembly including i) a valve stem portion, the valve stem portion including an enlarged valve head toward the forward end of the female body with a forwardly-opening conical cavity receiving the conical valve head of the male coupling, and an outer surface sealingly engageable with the piston sleeve when the female coupling member is uncoupled from the male coupling member; and ii) a poppet valve extending forwardly from the valve stem portion and disposed within the upstream cavity portion of the internal cavity, said poppet valve dimensioned to be sealingly seated and urged forwardly against the valve seat by the spring through the engagement of the valve head and the piston sleeve when the female coupling member is uncoupled from the male coupling member to prevent fluid flow through the female coupling member and to contain upstream system fluid; the piston sleeve and valve stem assembly being axially-displaced rearward in the body such that the poppet valve is moved rearwardly away from the valve seat and the piston sleeve is moved rearwardly away from the valve head of the valve stem portion to allow fluid to flow through the female coupling member.