Suction nozzle

Claim 1

A SUCTION NOZZLE COMPRISING: FIRST AND SECOND WALL MEANS ENGAGEABLE TO DEFINE A HOLLOW INTERIOR; EACH OF SAID WALL MEANS HAVING A CROSS-SECTION, TRANSVERSE TO THE LONGITUDINAL AXIS OF THE NOZZLE, LESS THAN THE CROSS-SECTION OF THE NOZZLE AT THE SAME LOCATION; SAID WALL MEANS, WHEN ENGAGED, DEFINING A SUBSTANTIALLY TUBULAR NOZZLE REAR PORTION OPEN AT THE REAR; COLLAR MEANS ENGAGING THE PERIPHERY OF SAID NOZZLE REAR PORTION TO PREVENT MOVEMENT OF SAID ENGAGED WALL MEANS IN A DIRECTION TRANSVERSE TO THE LONGITUDINAL AXIS OF THE NOZZLE; SAID WALL MEANS, WHEN ENGAGED, DEFINING AT LEAST ONE SUCTION OPENING AT THE FORWARD END OF THE NOZZLE; PIN MEANS ON ONE OF THE WALL MEANS, FORWARDLY OF THE NOZZLE REAR PORTION; SOCKET MEANS ON THE OTHER WALL MEANS FOR RECEIVING SAID PIN MEANS, WHEN THE WALL MEANS ARE ENGAGED, AND FOR PREVENTING MOVEMENT OF THE ENGAGED WALL MEANS IN THE DIRECTION OF THE LONGITUDINAL AXIS OF THE NOZZLE; SAID WALL MEANS BEING RELATIVELY THICK AT THE LOCATION OF SAID PIN MEANS AND SAID SOCKET MEANS AND BEING SUBSTANTIALLY THINNER ALONG THE ENTIRE REMAINDER THEREOF IN COMPARISON TO THE THICKNESS OF THE WALL MEANS AT SAID LOCATIONS OF THE PIN MEANS AND THE SOCKET MEANS.