Stopcock

Claim 1

A STOPCOCK, ALL PARTS OF WHICH ARE FORMED OF PLASTIC MATERIALS BY A MOLDING PROCESS AND FOR USE IN THE ADMINISTRATION OF LIQUID INCLUDING IN COMBINATION A BODY PROVIDED WITH A TAPERED BORE AND AN OPENING COMMUNICATING THEREWITH, A KEY MEMBER, A TAPERED STEM FORMING A LOWER PART OF SAID MEMBER AND HAVING A PASSAGE ON ITS OUTER FACE, SAID STEM EXTENDING INTO SAID BODY BORE, AN ADJUSTABLE COLLAR ENCIRCLING AND AXIALLY SHIFTABLE ALONG SAID STEM TOWARDS THE UPPER END OF SAID MEMBER, LATCH PARTS INTEGRAL WITH SAID STEM CARRIED BY SAID STEM AND COLLAR AND COOPERATING UPON SUCH SHIFTING OCCURRING TO POSITIVELY COUPLED SAID COLLAR TO SAID STEM AND PREVENT A RETURN MOVEMENT OF SAID COLLAR ALONG THE LATTER, A BODY MOUNTING TO ADJUSTABLY RETAIN SAID COLLAR AND THUS MAINTAIN SAID STEM WITHIN SAID BORE AND IN SEALING CONTACT WITH THE FACE OF THE LATTER, SAID BODY MOUNTING INCLUDING MATING THREADS ON THE BODY AND THE COLLAR WHEREBY THE FRICTIONAL ENGAGEMENT BETWEEN THE KEY MEMBER AND BODY IS ADAPTED TO BE VARIED AND THE KEY MEMBER IS ADAPTED TO BE LOCKED AGAINST ROTATION WITH RESPECT TO THE BODY AND HANDLE ACTUATOR MEANS INTEGRAL WITH SAID KEY MEMBER WHICH PROJECTS LATERALLY AND CIRCUMFERENTIALLY ABOUT SAID KEY MEMBER AT THE UPPER PORTION THEREOF, SAID HANDLE MEANS SERVING AS AN INDICATOR AND BEING ADAPTED FOR ROTATING SAID KEY MEMBER WITH RESPECT TO SAID BODY FOR ESTABLISHING THE INTERRUPTING COMMUNICATION BETWEEN THE OPENING OF THE LATTER AND THE PASSAGE ON THE OUTER FACE OF SAID KEY MEMBER AND BORE OF THE BODY.