US 11,873,933 B2Granted

Pipe coupling member

AssigneeNitto Kohki Co., Ltd.

InventorToru Kouda

Life of this patent

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Abstract

A pipe coupling member includes a coupling body defining a part of a fluid passage, and a support member disposed inside the coupling body. A valve accommodating space is defined inside the coupling body at a position forward of the support member, and a valve element is disposed in the valve accommodating space to open and close the fluid passage. The coupling body is formed from a thin-walled pipe material and has a deformed recess formed by plastically deforming radially inward a portion of the coupling body that covers an annular groove of the support member. The deformed recess has a locking element latching surface along a support surface of the annular groove. When the pipe coupling member is connected to an associated pipe coupling member, the locking element latching surface is latched by a locking element of the associated pipe coupling member.

Claims8

Dependent claims

A pipe coupling member detachably connectable to an associated pipe coupling member having a locking element, the pipe coupling member comprising:

a coupling body having a forward end and a rear end and cylindrically extending from the forward end to the rear end to define at least a part of a fluid passage of the pipe coupling member, the coupling body having a deformed portion deformed radially inward between the forward end and the rear end to form a locking element latching surface on an outer peripheral surface of the coupling body, the locking element latching surface facing rearward;
and
a cylindrical support member disposed inside the coupling body so as to support a part of the coupling body from radially inside, the support member having a support surface supporting from inside a portion of the deformed portion that forms the locking element latching surface;
wherein when the pipe coupling member is connected to the associated pipe coupling member, the locking element latching surface is latched by the locking element of the associated pipe coupling member, thereby allowing the pipe coupling member to be held by the associated pipe coupling member.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/693,804Filed 14 Mar 2022 · continuation
Priority: JP 2019-16616612 Sep 2019
Published: US 2022/0205571 A130 Jun 2022
Granted: 16 Jan 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16L 37/23
In which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts: by means of balls
F16L 37/30
With fluid cut-off means: with fluid cut-off means in each of two pipe-end fittings
F16L 37/35
At least one of two lift valves being opened automatically when the coupling is applied: at least one of the valves having an axial bore…
F16L 13/141
Made by plastically deforming the material of the pipe, e.g. by flanging, rolling: by crimping or rolling from the outside