초록 ▼

A two-part coupling valve apparatus includes a first coupling part and a second coupling part which are mutually inter-engageable to open fluid communication through the coupling valve. The coupling parts can be disengaged from one another to discontinue fluid communication, which also closes fluid

A two-part coupling valve apparatus includes a first coupling part and a second coupling part which are mutually inter-engageable to open fluid communication through the coupling valve. The coupling parts can be disengaged from one another to discontinue fluid communication, which also closes fluid communication between each of the coupling parts and ambient. The retention volume of fluid exposed to ambient upon the coupling parts being disconnected is small. The coupling valve also allows a user to selectively regulate the flow rate of fluid by manually rotating the coupling parts relative to one another.

대표청구항 ▼

[ I claim:] [16.] A method of providing a two-part coupling valve apparatus having a separable first coupling part and second coupling part in order to engage these coupling parts in sealing relation to lock axially together and define a fluid flow path passing through the coupling valve apparatus,

[ I claim:] [16.] A method of providing a two-part coupling valve apparatus having a separable first coupling part and second coupling part in order to engage these coupling parts in sealing relation to lock axially together and define a fluid flow path passing through the coupling valve apparatus, and upon relative rotation of the coupling parts to open and regulate fluid flow in the flow path, said method including steps of:providing each of the first and second coupling parts with a respective tubular body, using this tubular body to define cooperating means for axially engaging sealingly with the other of the first coupling part and second coupling part, providing means for locking the tubular bodies together in axial inter-engagement while allowing relative rotation of the coupling parts; providing a respective portion of a fluid flow path extending through both the coupling parts when engaged; and providing each of the tubular bodies with a respective valve seat through which the fluid flow path passes; providing a respective valve member rotational with and axially movable in the respective tubular body to engage the respective valve seat and close fluid communication in the respective portion of the flow path; providing each valve member with a respective camming surface confronting and engageable with the camming surface of the other of the respective valve members; and engaging the camming surfaces with one another and relatively rotating these engaged camming surfaces upon relative rotation of the coupling parts to axially unseat each valve member from its respective valve seat.