# US 9,039,045 B2 · Quick connect coupling

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- Number: US 9,039,045 B2
- Document ID: US9039045B2
- Status: Granted
- Kind: B2
- Application number: 11/377,724
- Filed: 2006-03-16
- Published: 2006-08-10
- Granted: 2015-05-26
- Earliest claimed: 2002-03-08
- Assignees: The Gates Corporation
- Applicants: Adrian R. Cooper; Geoffrey R. Keast; Randall M. Leasure
- Inventors: Adrian R. Cooper; Geoffrey R. Keast; Randall M. Leasure
- Web page: https://patentgrep.com/patent/US9039045B2

## CPC

- F16L 19/0231: {with specially adapted means for positioning the threaded member behind the collar}
- F16L 37/088: by means of a split elastic ring
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

An improved quick connect hose coupling for connecting a hose to a fixture has a hose stem portion including a hose insert portion, a fixture portion including a fixture connection portion, and a joinder portion. The joinder portion includes a male connection portion and a female connection portion. Each of the male connection portion and the female connection portion are adapted to join in a sealing and locking manner upon being pushed together. The coupling further includes threads and wrench mating flats adapted to disconnect the hose from the fixture. It is improved by the male connection portion being a unitary structure having a leading support cylindrical surface, a following support cylindrical surface, and a transition, surface intermediate therein between. The leading support cylindrical surface has a leading radius. The following support cylindrical surface has a following radius. The following radius is larger than the leading radius.

## Claims

### Claim 1

A hose coupling comprising:
an integral male connection portion comprising:
a leading support cylindrical surface portion having a leading radius;
a following support cylindrical surface portion, having a following radius, said following radius being larger than said leading radius; and
a transition surface portion, intermediate said leading support cylindrical surface and said following support cylindrical surface; and
a female connection portion comprising:
a nut having an interior groove having a forward radial face and a rearward camming face, a lock ring captured by said interior groove, and a base-of-male receiving portion;
a joinder end of an adapter having an abutment and tip-of-male receiving portion, and
wherein said adapter further comprises
a central wrenching section;
a fixture end having external threads; and
an adapter bore.

### Claim 2 (depends on 1)

The coupling of claim 1, wherein said male connection portion further includes an annular lead-in surface portion.

### Claim 3 (depends on 2)

The coupling of claim 2, wherein said annular lead-in surface portion is substantially frustoconical.

### Claim 4 (depends on 1)

The coupling of claim 1, further comprising a fixture connection portion.

### Claim 5 (depends on 1)

The hose coupling of claim 1, wherein said transition surface is frustoconical.

### Claim 6 (depends on 1)

The hose coupling of claim 1, wherein said transition surface is contiguous with said leading support cylindrical surface.

### Claim 7 (depends on 1)

The hose coupling of claim 1, wherein said transition surface is contiguous with said following support cylindrical surface.

### Claim 8 (depends on 1)

The hose coupling of claim 1, wherein said male connection portion further includes a first peripheral depression adapted to receive an axial movement limiting lock.

### Claim 9 (depends on 8)

The coupling of claim 8, wherein said male connection portion further includes a second peripheral depression portion adapted to receive a seal.

### Claim 10 (depends on 8)

The hose coupling of claim 8, wherein said first peripheral depression is proximate said following support cylindrical surface.

### Claim 11 (depends on 8)

The hose coupling of claim 8, wherein said first peripheral depression is proximate said transition surface.

### Claim 12 (depends on 1)

The hose coupling of claim 1, wherein said male connection portion further includes an annular lead-in surface.

### Claim 13 (depends on 12)

The hose coupling of claim 12, wherein said annular lead-in surface is substantially frustoconical.