High vacuum seal

US4244557A · kind A · utility

Assignee

• Leybold-Heraeus GmbH · DE

Inventors

• Wilhelm Polhede · Bruchköbel, DE
• Reinhard Reiter · Gelnhausen, DE

Key dates

• Filing date: Oct 3, 1978
• Grant date: Jan 13, 1981
• Expiry date: Oct 3, 1998

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K51/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A vacuum-tight closure assembly includes a valve seat; a spreadable valve plate movable into a closed position for assuming a spreaded state in which it sealingly engages the valve seat; and a guide arrangement for a centered guiding of the valve plate during its motion into the closed position. The guide arrangement includes guide faces located in the vicinity of and stationarily with respect to the valve seat and counterguide faces located on and movable with the valve plate. The guide faces cooperate with the counterguide faces during the motion of the valve plate towards the closed position.