US4858967A — High pressure hose fitting and method for sealing…

Claim 1

Independent Claim 143 words

A hose end unit comprising: an axially extending hose having an inner axially extending passageway, an axially extending liner of generally annular cross-section generally circumventing said passageway, and an axially extending reinforcement layer generally circumventing the liner, the hose having an end portion, the liner extending axially beyond the reinforcing layer to terminate in a protruding end region adjacent said end portion; a generally tubular end fitting having a leading end portion inserted within the end region of the liner, said leading portion including means for enveloping at least a portion of the protruding end region of the liner; and a sleeve circumventing the end portion of the hose and swaged radially inwardly to clamp the leading portion of the tubular end fitting to the liner, the liner being thereafter expanded by fluid pressure within the hose to seal against the enveloping means.

Claim 2

Dependent Claim 143 words

A hose end unit comprising: an axially extending hose having an inner axially extending passageway, an axially extending liner of generally annular cross-section generally circumventing said passageway, and an axially extending reinforcement layer generally circumventing the liner, the hose having an end portion, the liner extending axially beyond the reinforcing layer to terminate in a protruding end region adjacent said end portion; a generally tubular end fitting having a leading end portion inserted within the end region of the liner, said leading portion including means for enveloping at least a portion of the protruding end region of the liner; and a sleeve circumventing the end portion of the hose and swaged radially inwardly to clamp the leading portion of the tubular end fitting to the liner, the liner being thereafter expanded by fluid pressure within the hose to seal against the enveloping means.

Claim 3

Dependent Claim 29 words

The hose end unit of claim 1 wherein the end fitting has a generally concave flange spaced from its leading end for contacting the protruding end of the liner.

Claim 4

Dependent Claim 31 words

The hose end unit of claim 2 wherein the radially outer surface of the flange is shaped to extend axially along the outer surface of the liner towards the protective layer.

Claim 5

Dependent Claim 79 words

The hose end unit of claim 1 wherein the end fitting has a generally circumferential flange spaced from its leading end for contacting the protruding end of the liner, the flange having a generally circumferential liner-receiving groove formed therein for receiving the protruding end of the liner between the radially inner and outer walls of the groove so that the walls of the groove respectively engage the inner and outer surfaces of the liner when the sleeve is swaged.

Claim 6

Dependent Claim 25 words

The hose end unit of claim 4 wherein the groove is of sufficient depth to accommodate substantially the entire protruding end portion of the liner.

Claim 7

Dependent Claim 55 words

The hose end unit of claim 5 including a ring-like member positioned at the end region of the hose between the reinforcement layer and the flange face of the end fitting, the ring-like member being sized to partially overlap the groove while permitting the protruding end of the liner to pass therethrough into the groove.

Claim 8

Dependent Claim 27 words

The hose end unit of claim 3 wherein the concavity of the flange is sufficiently deep to accommodate substantially the entire protruding end portion of the liner.

Claim 9

Dependent Claim 71 words

The hose end unit of claim 7 including a ring-like member positioned at the end region of the hose between the reinforcement layer and the flange face of the end fitting, like member being sized to partially overlap the the ring-like member being sized to partially overlap the concave surface of the flange while permitting the protruding end of the liner to pass therethrough into the concave region of the flange.

Claim 10

Dependent Claim 64 words

The hose end unit of claim 1 including a barrier means axially positioned between the end of the reinforcement layer and the end of the protruding liner for dispersing the force of any fluid emanating from the enveloping means throughout the radial thickness of the protective layer to inhibit axial movement of the protective layer away from the protruding end region of the liner.

Claim 11

Dependent Claim 65 words

The hose end unit of claim 9 wherein the barrier means includes a generally annular member having an internal diameter encompassing at least a portion of the protruding end region of the liner so that the protruding end of the liner passes therethrough into the enveloping means, and having an outside diameter sufficiently large to abut substantially the radially extending thickness of the reinforcement layer.

Claim 12

Dependent Claim 30 words

The hose end unit of claim 10 wherein the inside diameter of the annular member is sized to provide a tight sliding fit with respect to the encompassed liner portion.

Claim 13

Independent Claim 145 words

A method for forming a high pressure coupling for a hose of the type including an axially extending liner of generally annular cross-section circumventing a fluid passageway, and an axially extending reinforcement layer generally circumventing the liner, the method comprising the steps of: axially extending the liner beyond the reinforcing layer so that the liner terminates in a protruding end region adjacent to the end of the hose; inserting a generally tubular end fitting into the end region of the liner until the protruding portion of the liner nests within a liner-receiving structure formed in the end fitting; circumventing the liner-receiving structure and overlying reinforcement layer with a swagable collar; and deforming the collar radially inwardly to clamp the liner within the liner-receiving structure so that the subsequent expansion of the liner by fluid pressure within the passageway seals the liner against the liner-receiving structure.

Claim 14

Independent Claim 145 words

A method for forming a high pressure coupling for a hose of the type including an axially extending liner of generally annular cross-section circumventing a fluid passageway, and an axially extending reinforcement layer generally circumventing the liner, the method comprising the steps of: axially extending the liner beyond the reinforcing layer so that the liner terminates in a protruding end region adjacent to the end of the hose; inserting a generally tubular end fitting into the end region of the liner until the protruding portion of the liner nests within a liner-receiving structure formed in the end fitting; circumventing the liner-receiving structure and overlying reinforcement layer with a swagable collar; and deforming the collar radially inwardly to clamp the liner within the liner-receiving structure so that the subsequent expansion of the liner by fluid pressure within the passageway seals the liner against the liner-receiving structure.

Claim 15

Dependent Claim 46 words

The method of claim 12 including the step of forming a liner-receiving groove in a flange of the end fitting, the flange being axially spaced along the inserted portion of the fitting to abut the reinforcement layer of the hose when the fitting is fully inserted.

Claim 16

Dependent Claim 34 words

The method of claim 13 including the step of positioning a generally annular member between the reinforcement layer and flange so that the protruding region of the liner passes through the member's internal diameter.

Claim 17

Dependent Claim 29 words

The method of claim 13 including the step of dispersing the force of any fluid in the groove over the substantial portion of the thickness of the reinforcement layer.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-08-21	1993-02-20	1993-08-22	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-08-21	1997-02-20	1997-08-22	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-08-21	2001-02-20	2001-08-22	$7700.00	Window Closed / Lapsed

High pressure hose fitting and method for sealing high pressure hoses to fittings

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