US 2017/0254461 A1 · CROWN SEAL WITH INTEGRAL SEALING PROJECTIONS FOR UNDERSEA HYDRAULIC COUPLINGS

Abstract

A crown seal for sealing between the body of a female hydraulic coupling member and the probe section of male hydraulic coupling member has sealing projections on or near its outer diameter to provide enhanced sealing effectiveness between the crown seal and the body of the female member and obviate the need for circumferential O-ring seals. In a first embodiment, the sealing projections have a substantially circular cross section and project both axially and radially from the body of the crown seal. In a second embodiment, the sealing projections have a semicircular cross section and project in an axial direction from certain outside edges of the crown seal. Crown seals according to the invention may be retrofitted to female hydraulic couplings of the prior art. Alternatively, the body of the female coupling or a seal retainer or seal cartridge fitted therein may be provided with grooves or contoured surfaces to fit the sealing projections on the crown seal.

Claims6

Dependent claims

A female hydraulic coupling member comprising:

a body having a central axial bore with a stepped internal diameter;
an angled shoulder within the central axial bore connecting a first bore section having a first, larger internal diameter and a second bore section having a second, smaller internal diameter;
a groove in the body at the juncture of the angled shoulder and the first bore section.

Dependencies are inferred from the claim text.

Facts

Application

15/602,901Filed 23 May 2017

Priority

7 Feb 2008

Published

7 Sep 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16L 37/32
With fluid cut-off means in each of two pipe-end fittings: at least one of two lift valves being opened automatically when the coupling is applied
F16J 15/3268
With elastic sealings, e.g. O-rings: mounting of sealing rings
F16J 15/3276
Mounting of sealing rings: with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
F16L 37/025
In which the connection is maintained only by friction of the parts being joined: with an inner elastic part pressed against an outer part by…

Crown seal with integral sealing projections for undersea hydraulic couplings

Life of this patent

Crown seal with integral sealing projections for undersea hydraulic couplings

Life of this patent

Abstract

Claims6