Reusable end fitting
First Claim
1. A two-piece end fitting comprising an elongated insert means having at least an annular barb on one end and a connector on the other end, said insert having a hose clamping barbed section between said barbed end and said connector end, said barbed section extending from the barbed end toward the connector end and terminating in an annular locking ridge with a shear surface, said locking ridge being followed by a first threaded section, collar means having a collar shell and a second threaded section with a sealing shoulder therebetween, said shoulder and said ridge cooperating to form an annular shearing edge when said first and second threaded sections are in a closed position, said barbed section having dimensions which receive and fit into a hose, said second threaded section having a length relative to the length of said barbed section such that when said first and second threaded sections mesh a hose fitted into said collar shell projects beyond said shell and over said shoulder whereby a pilot end section of said hose is formed, the relative dimensions of said insert means, collar means and hose being such that said collar shell pulls said pilot end over said barbed section as said first and second threaded sections are turned and close upon each other thereby shearing a tip ofsaid hose between said shoulder and said ridge which occurs responsive to the travel of said sections when said first and second threaded sections are turned upon each other, at which time said collar fits over and surrounds said barbed section with said end section of said hose therebetween.
1 Assignment
0 Petitions
Accused Products
Abstract
A reusable end fitting may be attached quickly and easily to a hose without requiring production machinery. The end fitting has a first part with a collar which grips the hose against a second part with a barbed end. When two wrenches are used to turn one part onto the other part, a pilot end of a hose is gripped and pulled onto the barbed end. One embodiment provides a collar with springlike qualities that compress the hose against the barbed end. Another embodiment has threads inside the collar to propel the hose onto the barbed end.
83 Citations
13 Claims
- 1. A two-piece end fitting comprising an elongated insert means having at least an annular barb on one end and a connector on the other end, said insert having a hose clamping barbed section between said barbed end and said connector end, said barbed section extending from the barbed end toward the connector end and terminating in an annular locking ridge with a shear surface, said locking ridge being followed by a first threaded section, collar means having a collar shell and a second threaded section with a sealing shoulder therebetween, said shoulder and said ridge cooperating to form an annular shearing edge when said first and second threaded sections are in a closed position, said barbed section having dimensions which receive and fit into a hose, said second threaded section having a length relative to the length of said barbed section such that when said first and second threaded sections mesh a hose fitted into said collar shell projects beyond said shell and over said shoulder whereby a pilot end section of said hose is formed, the relative dimensions of said insert means, collar means and hose being such that said collar shell pulls said pilot end over said barbed section as said first and second threaded sections are turned and close upon each other thereby shearing a tip ofsaid hose between said shoulder and said ridge which occurs responsive to the travel of said sections when said first and second threaded sections are turned upon each other, at which time said collar fits over and surrounds said barbed section with said end section of said hose therebetween.
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11. A two-piece end fitting comprising one piece having first barbed and threaded means fitting into the bore of a hose having an end, a second piece having a threaded collar means fitting over the outside periphery of said hose, complementary means on said first and second pieces for gripping said end of said hose and pulling it over said barbed means when said first and second means are threaded into each other, and cooperating shearing edges on said first and second means for cutting off a tip end of the hose responsive to threading said first and second means into each other.
- 12. An end fitting for a hose having an outside surface and an internal bore, said fitting comprising a threaded collar member for fitting over the outside surface of said hose, an elongated threaded insert means for fitting into the bore on said hose, the threads on said collar and on said insert causing said collar to travel relative to said insert and to cooperatively pull a hose in said collar over said insert, said insert having an outside surface which fits snugly and sealingly against the interior surface of said bore thereby forming a first seal extending longitudinally along the length of said insert where it engages the interior of said hose, a cooperating pair of annular shear members formed on the outside of said insert and on the inside of said collar for cutting off a tip of the end of said hose responsive to the travel of said collar and insert pulling upon said hose which is caused by a turning of said threads upon each other, said travel and said cut off end jamming the end of said hose into a sealing contact with one of said annular members where it is held in said sealing contact by the other of said annular members thereby forming a second seal at the end of said hose, whereby there is a twin seal at the longitudinal surface of said insert and at the abutment surface on the hose end.
Specification