Sealed contact bushings

US7022423B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Robert Greiner · Baiersdorf, DE
• Manfred Ochsenkuehn · Starnberg, DE
• Angelo Polese · Berlin, DE

Key dates

• Filing date: Dec 14, 2000
• Grant date: Apr 4, 2006
• Expiry date: Feb 6, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/40
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

According to the invention, the inventive sealed contact bushings for plastic components consist of a glass/plastic compound based on a thermoplastic, which contains a low-melting sulphophosphate glass with the following composition: 4 to 10% Li2O, 40 to 10% Na2O 4 to 8% K2O, 1 to 2 % CaO, 35 to 37% ZnO, 0 to 3% La2O3, 19 to 22% P2O5 and 19 to 22% SO3, in addition to a high-performance thermoplastic.