Safety joint for a fluid filling apparatus

Patent metadata

Field	Value
Publication number	US-10598294-B2
Application number	US-201816031901-A
Country	US
Kind code	B2
Filing date	Jul 10, 2018
Priority date	Jul 11, 2017
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

To provide a safety joint capable of preventing a component of a weighing machine side member or a vehicle side member is broken in case that the weighing machine side member and the vehicle side member are separated from each other in an emergency when a vehicle runs while hydrogen gas is filled for instance. The safety joint (100) according to the present invention includes a plug (10) with a cylindrical shape in which a passage (1A) is formed, a socket (20) in which a passage (21A) continuing to the passage (1A) in the plug (10) is formed, and a shut off valve mounted on the passage (21A) in the socket (20), the shut off valve opening when the plug (10) being inserted into the socket (20) and closing when the plug (10) being disconnected therefrom, wherein central axes of the passages (1A,21A) of the plug (10) and the socket (20) do not form a straight line, a cover (50) for protecting a valve rod (2) mounted on one of the plug (10) and the socket (20) is mounted.

First claim

What is claimed is:

1. A safety joint comprising:
a plug with a cylindrical shape in which a passage is formed,
a socket in which a passage continuing to the passage in the plug is formed,
a shut off valve mounted on the passage in the socket, the shut off valve opening when the plug being inserted into the socket and closing when the plug being disconnected therefrom, wherein central axes of the passages of the plug and the socket do not form a straight line,
a valve rod mounted on one of the plug and the socket, and
a cover for protecting the valve rod, the cover and the valve rod being configured such that the valve rod is exposed when the plug separates from the socket.

2. The safety joint as claimed in claim 1 , wherein the cover surrounds a portion of one of the plug and the socket which the valve rod is not mounted and has a shape attachable to the plug and the socket.

3. The safety joint as claimed in claim 1 , wherein one of the plug and the socket comprises a depressurizer including a main body portion made of metal, a depressurizing communication hole communicating with a hydrogen gas passage in the main body portion, a depressurizing plug made of metal, the depressurizing plug insertable into the depressurizing communication hole, and tapered portions formed on the depressurizing communication hole and the depressurizing plug respectively, the tapered portions having complemental shapes with each other.

4. The safety joint as claimed in claim 3 , further comprising a relief circuit for outflowing a filled fluid and communicating with the depressurizing communication hole, an outlet of the relief circuit being formed at a position separated from an area above the depressurizing plug.

5. The safety joint as claimed in claim 2 , wherein one of the plug and the socket comprises a depressurizer including a main body portion made of metal, a depressurizing communication hole communicating with a hydrogen gas passage in the main body portion, a depressurizing plug made of metal, the depressurizing plug insertable into the depressurizing communication hole, and tapered portions formed on the depressurizing communication hole and the depressurizing plug respectively, the tapered portions having complemental shapes with each other.

6. The safety joint as claimed in claim 5 , further comprising a relief circuit for outflowing a filled fluid and communicating with the depressurizing communication hole, an outlet of the relief circuit being formed at a position separated from an area above the depressurizing plug.

7. The safety joint as claimed in claim 1 , wherein the valve rod extends along a rod axis, the cover being configured so as not to traverse the rod axis when the plug separates from the socket.

8. A safety joint comprising:
a plug in which a passage is formed;
a socket in which a passage continuing to the passage in the plug is formed;
a shut off valve mounted on the passage in the socket, the shut off valve opening when the plug being inserted into the socket and closing when the plug being disconnected therefrom, wherein central axes of the passages of the plug and the socket do not form a straight line;
a valve rod mounted on one of the plug and the socket, the valve rod extending along a rod axis; and
a cover for protecting the valve rod, the cover being configured so as not to traverse the rod axis when the plug separates from the socket.

Assignees

• Tatsuno Corp

Inventors

• Takezawa Masahiro
• Terasoma Yuki
• Kimura Kiyoshi

Classifications

• F16L37/23

  by means of balls · CPC title

• F17C2221/012

  Hydrogen · CPC title

• F16L57/00

  Protection of pipes or objects of similar shape against external or internal damage or wear ({protection under water F16L1/123;} supporting of pipes inside other pipes or sleeves F16L7/00; used in connection with end fittings of hoses F16L35/00; protection of pipes or pipe fittings against corrosion or incrustation F16L58/00; protection thereof during transport B65D59/00) · CPC title

• F16L29/02

  with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied · CPC title

• B60K15/04

  Tank inlets (B60K15/077 takes precedence) · CPC title