# US 8,783,655 B2 · Connector structure for pressure pipe

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- Number: US 8,783,655 B2
- Document ID: US8783655B2
- Status: Granted
- Kind: B2
- Application number: 13/678,215
- Filed: 2012-11-15
- Published: 2014-05-15
- Granted: 2014-07-22
- Earliest claimed: 2012-11-15
- Applicants: Hsi Yin Hsieh
- Inventors: Hsi Yin Hsieh
- Web page: https://patentgrep.com/patent/US8783655B2

## CPC

- F16L 37/32: at least one of two lift valves being opened automatically when the coupling is applied
- F16L 29/02: with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied
- F16L 37/23: by means of balls
- Y10T 137/9029: With coupling
- 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

A connector structure for a pressure pipe includes a female connector and a male connector. The female connector includes a piston and a positioning sleeve therein. The female connector has inner threads. The positioning sleeve has outer threads. A nut is fitted on the positioning sleeve. The outer threads of the positioning sleeve are mated with the inner threads of the female connector. The piston has an insertion section to be inserted in the positioning sleeve. The insertion section has a slot and is provided with a first seal ring. The male connector has threads on an outer wall thereof for engagement of the nut of the female connector. The male connector has a coupling section and a second seal ring.

## Claims

### Claim 1

A connector structure for a pressure pipe, comprising a female connector and a male connector, the female connector comprising a piston and a positioning sleeve, the female connector having inner threads, the positioning sleeve having outer threads, a nut fitted on the positioning sleeve, the outer threads of the positioning sleeve being mated with the inner threads of the female connector, the piston having an insertion section to be inserted in the positioning sleeve, the insertion section having a slot on a face of the insertion section toward the male connector and transverse to a longitudinal direction of the connector structure and being provided with a first seal ring, the piston also having a rear section with a slot which is perpendicular to the slot of the insertion section and also perpendicular to the longitudinal direction of the connector structure, the male connector having threads on an outer wall thereof for engagement of the nut of the female connector, the male connector having a coupling section and a second seal ring, wherein, when the male connector is inserted and coupled to the female connector, the coupling section of the male connector is adapted to move the piston of the female connector backward to become an open state.

### Claim 2 (depends on 1)

The connector structure for a pressure pipe according to claim 1, wherein, in the open state, fluid is allowed to pass around an outer part of said insertion section and through said slot into a longitudinal passage in said male connector.