# US 4,395,811 A · Hose connectors and methods for making and applying same

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- Number: US 4,395,811 A
- Document ID: US4395811A
- Status: Granted
- Kind: A
- Application number: 06/310,303
- Filed: 1981-10-09
- Granted: 1983-08-02
- Earliest claimed: 1980-05-09
- Inventors: Richard D. Frye
- Web page: https://patentgrep.com/patent/US4395811A

## CPC

- F16L 33/24: with parts screwed directly on or into the hose (F16L33/22 takes precedence)
- F16L 33/00: Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses (connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00)
- Y10T 29/49911: by expanding inner annulus
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Male threaded hose connectors in the form of an integral sheet metal piece, methods for making such connectors, and hose equipped therewith. The male threaded portion of the connector surrounds the hose and includes rolled sheet metal threads embedded in the hose material.

## Claims

### Claim 1

The method for making a male threaded hose connector comprising
forming a flat circular sheet metal blank into a cup;
drawing the bottom of the cup into a hollow protuberance extending axially within the cup; and
subjecting the outer wall of the cup to roller threading to form a portion of the outer wall into threads which include outer male crests and inner female crests.

### Claim 2 (depends on 1)

The method defined in claim 1, wherein
said step of forming the blank into a cup is performed by drawing;
said step of drawing the bottom of the cup into a protuberance is carried out by first drawing the bottom of the cup into a protuberance which projects away from the interior of the cup and then subjecting the protuberance to a reverse drawing operation until the protuberance extends axially within the cup; and
said step of subjecting the outer wall of the cup to roller threading is carried out while the protuberance projects away from the interior of the cup.

### Claim 3 (depends on 1)

The method defined in claim 1, wherein
said step of drawing the bottom of the cup into a protuberance is carried out as a single drawing step; and
said step of subjecting the outer wall of the cup to roller threading is carried out after said single drawing step by use of a hollow threading arbor inserted into the annular space between the protuberance and the outer wall.

### Claim 4 (depends on 1)

The method defined in claim 1, further comprising
bending the free end portion of the outer wall back upon itself to provide an annularly reinforced portion.

### Claim 5 (depends on 4)

The method defined in claim 4, wherein
the free end portion is bent inwardly and back upon itself; and
the terminal edge of the outer wall then constitutes an annular shoulder facing the bottom of the cup.

### Claim 6 (depends on 1)

The method for equipping a hose with a male threaded connector, comprising
carrying out the method defined in claim 1 to produce the male threaded connector;
inserting an end portion of the hose into the annular space between the protuberance and the outer wall; and
expanding the protuberance to compress the end portion of the hose between the protuberance and the outer wall and embed the inner female crests of the threads in the material of the hose wall.

### Claim 7 (depends on 6)

The method defined in claim 6, wherein the free end portion of the outer wall is bent inwardly and back upon itself to provide an annularly reinforced portion in which the terminal edge of the outer wall constitutes an inwardly directed shoulder; and the step of expanding the protuberance embeds said shoulder in the material of the hose wall.