Compressed air hose connection

Claim 2

A hose fitting assembly comprising an annular nipple for receiving a hose therearound and having a passage therethrough extending from a terminal end thereof, said nipple having an axis extending through at least a portion of said passage beginning at said terminal end, said nipple having an enlarged annular exterior surface portion disposed between its ends and surrounding said axis, said enlarged surface portion being generally spaced a greater distance from said axis than other portions of the exterior of said nipple adjacent to said enlarged portion, said enlarged portion having an outer surface facing away from said axis which has an annular backside surface section facing partially away from said terminal end and inclined with respect to said axis, said backside surface section generally gradually tapering from a larger diameter at that end of said backside surface which is nearest said terminal end to a lesser diameter at its opposite end, and in which an abutment means is attached to said nipple and protrudes from said nipple away from said axis, said abutment means being disposed on the opposite side of said enlarged portion from said terminal end for receiving an end of said hose thereagainst to limit movement of said hose onto said nipple, said abutment means being annular and surrounding and being attached to the remainder of said nipple all around said axis, said abutment means having an annular ledge protruding from that side thereof which faces said terminal end of said nipple, said ledge being spaced farther from said axis than those certain adjacent portions of the remainder of the outer surface of said nipple which latter portions are disposed toward said terminal end for the reception of an end of said hose between said ledge and said certain adjacent surface portions of said nipple, and in which said ledge is transparent enough so that an operator can see the end of said hose therethrough.

Claim 3

A hose fitting assembly comprising an annular nipple for receiving a hose therearound and having a passage therethrough extending from a terminal end thereof, said nipple having an axis extending through at least a portion of said passage beginning at said terminal end, said nipple having an enlarged annular exterior surface portion disposed between its ends and surrounding said axis, said enlarged surface portion being generally spaced a greater distance from said axis than other portions of the exterior of said nipple adjacent to said enlarged portion, said enlarged portion having an outer surface facing away from said axis which has an annular backside surface section facing partially away from said terminal end and inclined with respect to said axis, said backside surface section generally gradually tapering from a larger diameter at that end of said backside surface which is nearest said terminal end to a lesser diameter at its opposite end, a ring surrounding said nipple, a ring-holding means attached to said nipple and receiving said ring thereon in a press-fit such that said ring can be removed from said holding means by manual pressure for freeing said ring for placement of said ring into a position for holding a hose, said ring-holding means being disposed on the opposite side of said enlarged portion from said terminal end.

Claim 4

A hose fitting assembly comprising an annular nipple for receiving a hose therearound and having a passage therethrough extending from a terminal end thereof, said nipple having an axis extending through at least a portion of said passage beginning at said terminal end, said nipple having an enlarged annular exterior surface portion disposed between its ends and surrounding said axis, said enlarged surface portion being generally spaced a greater distance from said axis than other portions of the exterior of said nipple adjacent to said enlarged portion, said enlarged portion having an outer surface facing away from said axis which has an annular backside surface section facing partially away from said terminal end and inclined with respect to said axis, said backside surface section generally gradually tapering from a larger diameter at that end of said backside surface which is nearest said terminal end to a lesser diameter at its opposite end, a ring surrounding said nipple, a ring-holding means attached to said nipple and receiving said ring thereon in a press-fit such that said ring can be removed from said holding means by manual pressure for freeing said ring for placement of said ring into a position for holding a hose, said ring-holding means being disposed on the opposite side of said enlarged portion from said terminal end.

Claim 5

The fitting assembly of claim 2 further comprising an abutment means attached to said nipple and protruding from said nipple away from said axis, said abutment means being disposed on the opposite side of said enlarged portion from said terminal end for receiving an end of said hose thereagainst to limit movement of said hose onto said nipple, said abutment means being annular and surrounding and being attached to the remainder of said nipple all around said axis, said abutment means having an annular ledge protruding from that side thereof which faces said terminal end of said nipple, said ledge being spaced farther from said axis than those certain adjacent portions of the remainder of the outer surface of said nipple which latter portions are disposed toward said terminal end for the reception of an end of said hose between said ledge and said certain adjacent surface portions of said nipple, and in which said abutment means has an inner portion having an outer surface facing away from said axis, a cap defining an outer portion of said abutment means which is farther from said axis than said inner portion of said abutment means, said cap surrounding said nipple at said inner abutment means portion, said cap having an inner surface which tightly engages said outer surface of said inner abutment means portion, said ledge being a part of said cap, the opposed surfaces of said inner portion of said abutment means and of said cap being so shaped that said cap cannot be moved toward said terminal end of said nipple and away from said attached portion of said abutment means, blocking means which is attached to that end of said nipple which is opposite said terminal end of said nipple, said blocking means extending outwardly from said axis in a position for overlapping said side of said cap which is opposite said terminal end of said nipple so that said blocking means blocks said cap from moving off of said inner portion of said abutment means in a direction opposite from said terminal end, said cap and said inner abutment means portion forming two parts of a special assembly of which at least one part is sufficiently flexible and resilient that said cap is connectable onto said inner abutment means portion by a press-fit sliding of said cap over that edge of said inner abutment means portion which is disposed closest to said terminal end of said nipple, said abutment means and said cap forming parts of said ring-holding means.

Claim 6

The fitting assembly of claim 2 further comprising said ring-holding means being substantially more soft and resilient than said ring.

Claim 7

The combination described in claim 2 in which said hose fitting assembly is combined with a second similar hose fitting assembly to form a coupler for receiving two hoses respectively, means attaching the said opposite ends of the respective nipples of said assemblies together, and in which a portion of said blocking means of each of said hose assemblies is integral with the cap means of the other hose fitting assembly.