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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12607273-B2, on 21 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000111

Suck-back valve

Published
Permanent URL
Classification
Industrial Motion & Power Transmission › Fluid Power
Original source
US-12607273-B2, the United States Patent and Trademark Office, 21 April 2026
Document SHA-256
c8e047a2dce3a1b2143508e644c71edff173cf1e6e89d7e0f211f6327a50d9b4

Abstract

A suck-back valve includes a valve main body formed with a suck-back chamber, and a suck-back mechanism unit. The suck-back mechanism unit includes a suck-back piston accommodated in a suck-back cylinder chamber and being slidable between two dead center positions, and a biasing member biasing the suck-back piston in a direction to increase the volume of the suck-back chamber. The suck-back cylinder chamber is divided by the suck-back piston into a first fluid chamber and a second fluid chamber. The biasing member is arranged in the first fluid chamber, and a standby position at which the suck-back piston is positioned when the pressure of a drive fluid in the second fluid chamber becomes the maximum is set to be away from the dead center position on the side closer to the suck-back chamber.

Publication information

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Citation

OpenTechnical Publication OT-2026-000000111, “Suck-back valve,” published September 15, 2026 at 19:02:30 UTC, https://opentechnical.org/p/OT-2026-000000111.

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This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.