Vacuum-operated probe tools

Claim 1

A VACUUM-OPERATED TOOL COMPRISING: AN ELONGATED BODY HAVING A TRANSVERSE RECESS OPENING TO THE ATMOSPHERE THROUGH ONLY ONE SIDE OF SAID BODY WITH A LONGITUTUDINALLY EXTENDING PASSAGEWAY PORTIONS EXTENDING FROM OPPOSITE ENDS OF SAID BODY TOWARD EACH OTHER AND SEPARATED BY A BODY WALL SO AS TO TERMINATE SHORT OF EACH OTHER ADJACENT TO SAID RECESS; A PAIR OF SPACED OPENINGS EXTENDING THROUGH SAID FLAT WALL AND CONNECTING THE ADJACENT ENDS OF SAID PASSAGEWAY PORTIONS TO SAID RECESS; A VALVE MEMBER SLIDABLY MOUNTED IN SAID RECESS ON SAID FLAT WALL IN THE LONGITUDINAL DIRECTION OF SAID ELONGATED BODY BETWEEN TWO POSITIONS AND HAVING A CAVITY FACING SAID FLAT WALL; SAID CAVITY BEING ARRANGED TO OVERLIE BOTH OF SAID OPENINGS AND THEREBY PLACE SAID PASSAGEWAY PORTIONS INTO COMMUNICATION WHEN SAID VALVE MEMBER IS IN ONE POSITION AND TO OVERLIE ONLY ONE OF SAID OPENINGS AND THEREBY PREVENT SAID PASSAGEWAY PORTIONS FROM COMMUNICATING WHEN SAID VALVE MEMBER IS IN THE OTHER POSITION; A USHAPED RETAINER HAVING A PAIR OF LATERALLY RESILIENT SPACED LEGS HAVING OPPOSITELY EXTENDING TABS; AND A PAIR OF ALIGNED NOTCHES FORMED IN SAID BODY IN SAID RECESS AT LOCATIONS THAT ARE SPACED FROM SAID FLAT WALL; SAID RETAINER BEING DETACHABLY SECURED TO SAID BODY IN SAID RECESS BY SAID TABS BEING DISPOSED IN SAID NOTCHES, AND SAID RETAINER BEING IN POSITION TO RESTRAIN MOVEMENT OF SAID SLIDE VALVE OUT OF SAID RECESS BUT TO ALLOW SLIDING MOVEMENT OF SAID VALVE MEMBER IN SAID RECESS.