Swivel hose couplings
First Claim
1. A swivel hose coupling comprising a swivel insert, means for attaching said swivel insert to an end of a hose, said swivel insert including a sleeve portion surrounding such hose end, and a swivel hose end piece surrounding said swivel insert said swivel hose end piece having an internal cylindrical groove therein in which an external cylindrical portion of said sleeve portion having an outer diamater less than the inner diameter of said internal groove is rotatably received, said internal groove having opposite axial inner and outer ends overlapping opposite axial inner and outer ends of said sleeve portion to retain said sleeve portion within said internal groove, said sleeve portin having a plurality of circumferentially spaced longitudinally extending grooves in said external cylindrical portion separated by relatively narrow ribs threbetween for reducing frictional contact between said swivel insert and swivel hose end piece during relative rotation therebetween.
0 Assignments
0 Petitions
Accused Products
Abstract
In one form of the invention, the swivel hose couplings include two parts, a swivel insert which may be threaded or otherwise attached to the end of the hose, and a swivel hose end piece which has an internal groove therein in which an exterior portion of the swivel is rotatably received. A sealing lip may be provided on the exterior of the swivel insert to form a seal with the wall of the internal groove in the swivel hose end piece. Also, a skirt portion may be provided on the swivel hose end piece which extends axially into the end of the hose to shield the axial outer end of the swivel insert and hose end against entrained material in the fluid passing through the coupling from entering the swivel connection between the swivel insert and swivel hose end piece. In another form of the invention, the swivel hose end piece may consist of two separate parts, a plain end portion and a swivel insert retaining end portion, thereby permitting the plain end portion to be made of a softer, more pliable plastic material than the swivel insert retaining end portion. To connect the plain end portion to the swivel insert retaining end portion, an external annular groove is provided adjacent the axial inner end of the plain end portion for receipt of an inturned end at the axial outer end of the swivel insert retaining end portion. An inturned flange may also be provided on the swivel insert retaining end portion adjacent the axial inner end of the plain end portion to provide a hard bearing surface for the axial outer end of the swivel insert. In another form of swivel hose coupling in accordance with the invention, a two-piece swivel hose end is provided, including a threaded end portion for threaded engagement with the end of a corrugated plastic hose, and a plain end portion which is coupled to the threaded end portion by engagement of an inturned flange on the axial outer end of the threaded end portion in an external annular groove in the plain end portion adjacent the axial inner end thereof.
-
Citations
21 Claims
- 1. A swivel hose coupling comprising a swivel insert, means for attaching said swivel insert to an end of a hose, said swivel insert including a sleeve portion surrounding such hose end, and a swivel hose end piece surrounding said swivel insert said swivel hose end piece having an internal cylindrical groove therein in which an external cylindrical portion of said sleeve portion having an outer diamater less than the inner diameter of said internal groove is rotatably received, said internal groove having opposite axial inner and outer ends overlapping opposite axial inner and outer ends of said sleeve portion to retain said sleeve portion within said internal groove, said sleeve portin having a plurality of circumferentially spaced longitudinally extending grooves in said external cylindrical portion separated by relatively narrow ribs threbetween for reducing frictional contact between said swivel insert and swivel hose end piece during relative rotation therebetween.
- 11. A swivel hose coupling comprising a swivel insert, means for attaching said swivel insert to an end of a hose, said swivel insert including a sleeve portion surrounding such hose end, and a swivel hose end piece surrounding said swivel insert, said swivel hose end piece having an internal cylindrical groove therein in which an external cylindrical portion of said sleeve portion having an outer diameter less than the inner diameter of said internal groove is rotatably received, said internal groove having opposite axial inner and outer ends overlapping opposite axial inner and outer ends of said sleeve portion to retain said sleeve portion within said internal groove, said swivel hose end piece having a radially outwardly tapered opening adjacent an axial inner end thereof to facilitate camming of the axial inner end of said swivel hose end piece over an axial outer end of said swivel insert as said swivel hose end piece is pushed onto and along said sleeve portion until said sleeve portion sets within said internal groove in said swivel hose end piece.
- 15. A swivel hose coupling comprising a swivel insert, means for attaching said swivel insert to an end of a hose, said swivel insert including a sleeve portion surrounding such hose end, and a swivel hose end piece surrounding said swivel insert, said swivel hose end piece having an internal cylindrical groove therein in which an external cylindrical portion of said sleeve portion having an outer diameter less than the inner diameter of said internal groove is rotatably received, said internal groove having opposite axial inner and outer ends overlapping opposite axial inner and outer ends of said sleeve portion to retain said sleeve portion within said internal groove, said swivel insert including another sleeve portion radially inwardly spaced from said first-mentioned sleeve portion, both of said sleeve portions having axial outer ends connected together by a radially extending end wall portion, said another sleeve portion being externally threaded for internal threaded engagement with the end of a wire reinforced hose.
-
17. A swivel hose coupling comprising a swivel insert, means for securing said swivel to an end of a hose, and a swivel hose end piece surrounding said swivel insert, said swivel hose end piece having an internal annular groove therein which an external portion of said swivel insert is rotatably received, said internal groove having opposite axial inner and outer ends overlapping opposite axial inner and outer ends of said swivel insert, and annular skirt means integral with said swivel hose end piece and extending axially inwardly from the axial outer end of said internal groove and radially inwardly spaced therefrom, said skirt means extending axially inwardly beyond the axial outer end of said swivel insert to prevent entrained material in fluid passing through said coupling from entering a swivel connection between said swivel insert and swivel hose end piece, said swivel hose end piece having an axial outer end portion extending forwardly of said internal groove, said outer end portion of said swivel hose end piece having a longitudinal opening therethrough in line with the center of the hose end, said skirt means extending said opening into the end of said hose beyond the axial outer end of said swivel insert, said swivel insert including a pair of concentric radially spaced inner and outer tubular sleeve portions having axial outer ends connected together by a radially extending end wall portion, said inner sleeve portion being externally threaded for internal threaded engagement with a wire reinforced hose, said skirt means extending axially into said inner sleeve portion of said swivel insert.
- 18. A swivel hose coupling comprising a swivel insert, means for securing said swivel insert to an end of a hose, and a swivel hose end piece surrounding said swivel insert, said swivel hose end piece having an internal annular groove therein in which an external portion of said swivel insert is rotatably received, said internal groove having opposite axial inner and outer ends overlapping opposite axial inner and outer ends of said swivel insert, and annular skirt means integral with said swivel hose end piece and extending axially inwardly from the axial outer end of said internal groove and radially inwardly spaced therefrom, said skirt means extending axially inwardly beyond the axial outer end of said swivel insert to prevent entrained material in fluid passing through said coupling from entering a swivel connection between said swivel insert and swivel hose end piece, said swivel hose end piece having a radially outwardly tapered opening adjacent an axial inner end thereof to facilitate camming of said axial inner end of said swivel hose end piece over the axial outer end of said swivel insert as said swivel hose end piece is pushed onto and along said swivel insert until said swivel insert seats within said internal groove in said swivel hose end piece.
Specification