Pickup arm control mechanism and electrical circuitry therefore

US4300228A · kind A · utility

Assignee

• The Braun Corporation · DE

Inventors

• Udo Milutzki · Walldorf, DE
• Dietwald Schotte · Eschborn, DE
• Jeffrey Johnson · New Orleans, US

Key dates

• Filing date: Oct 20, 1980
• Grant date: Nov 10, 1981
• Expiry date: Oct 20, 2000

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B3/08516
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A control mechanism for automatically raising, swinging and lowering the pickup arm of a record player in response to the positioning of a finger of a user. The user's finger will selectively bridge pairs of contacts to establish an electrical circuit and generate an input signal to logic circuitry. The logic circuitry provides control signals which, through suitable transducers, control the motion of the arm.