Abstract: This swivel connection (10) of metallic material includes a female block (12), a center spool (14) and a male spool (16) which provide substantially universal movement between a hose line connection (18) and pneumatic tool (1). A protective cover (80) is provided for the female block (12) and a protective cover (82) is provided for the exposed portion of the center spool (14). Both covers are of non-mar plastic material to protect finished surfaces with which the swivel connection (10) comes into contact during use. Both covers include access openings (92, 112) having snap-fitted removable caps (100, 120).

Abstract: This fluid coupling (10) includes a metallic tubular body (12) having an inlet end (14) and an outlet end (16), the outlet end being adapted to receive a quick-connect-disconnect plug (20). A metallic actuating sleeve (32, 38) is mounted to the body (12) for selectively permitting fluid flow through the body (12) and latching the plug (20) in place. An outer cover (60) of non-mar plastic material is provided for the coupling (10) , which is moveable with the actuating sleeve (32) and prevents the metallic parts of the coupling from marking finished surfaces.

Abstract: This blow gun assembly (10) includes a blow gun (12) which includes a quick-change coupling adaptor (20) to facilitate the connection of an assortment of nozzles (22). The coupling adaptor includes a body (34) threadedly connected to the outlet end (18) of the blow gun and having a ball lock latch mechanism (42, 44), a spring-biased plunger (50) and a spring-biased external sleeve (60). The nozzle icludes a circumferential groove (30) receiving the balls when the nozzle is pushed into the adaptor body against the bias of the plunger to latch the nozzle in place. The plunger (50) includes guide tongue elements (58) received by cooperating grooves (48) in the body. The plunger tongues are spaced rearwardly of the forward end of the plunger so that the plunger tongues engage the balls to limit forward movement and the plunger overlaps the balls in the forward position, when the nozzle is ejected by pulling back on the sleeve.