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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-6173729-B1, on 16 January 2001. 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-2026-000003117

Switch-over device

Published
Permanent URL
Classification
Tools & Tooling › Clamping Tools
Original source
US-6173729-B1, the United States Patent and Trademark Office, 16 January 2001
Document SHA-256
0308c41de974be6c0473256eaf47064c35504f2cfc98c5c2dabdeb6d985070e9

A switch-over device which is useful for a gas insufflation device using liquid gas includes at least two inflow channels each blockable by a valve and at least one outflow channel for alternate removal of a fluid medium from a plurality of containers. The device has a switch-over piston movably mounted in a housing and comprising a base member which has at each end a valve closure member in a form of a body of rotation. The switch-over piston is driven by a pressure difference between the fluid media and connects one of the inflow channels to the outflow channel in each of two switching positions. A working chamber accommodates the switch-over piston, with sealing elements being provided for closing off the inflow channels in a pressure tight manner when the switch-over piston is in the correspondingly closed position and for dividing the working chamber into two portions sealed off from each other. The switch-over piston and/or the working chamber is constructed so that at least one sealing element can be arranged selectively in different positions. The size of the areas of the switch-over piston which are acted upon by the fluid media and determined the switch-over point is determined by the position of the sealing element.

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Abstract

A switch-over device which is useful for a gas insufflation device using liquid gas includes at least two inflow channels each blockable by a valve and at least one outflow channel for alternate removal of a fluid medium from a plurality of containers. The device has a switch-over piston movably mounted in a housing and comprising a base member which has at each end a valve closure member in a form of a body of rotation. The switch-over piston is driven by a pressure difference between the fluid media and connects one of the inflow channels to the outflow channel in each of two switching positions. A working chamber accommodates the switch-over piston, with sealing elements being provided for closing off the inflow channels in a pressure tight manner when the switch-over piston is in the correspondingly closed position and for dividing the working chamber into two portions sealed off from each other. The switch-over piston and/or the working chamber is constructed so that at least one sealing element can be arranged selectively in different positions. The size of the areas of the switch-over piston which are acted upon by the fluid media and determined the switch-over point is determined by the position of the sealing element.

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Publication information

Plain textMarkdownManifestIntegrity record

Citation

OpenTechnical Publication OT-2026-000003117, “Switch-over device,” published September 15, 2026 at 19:32:38 UTC, https://opentechnical.org/p/OT-2026-000003117.

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Terms

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.