Patent · US Expired

Control mechanisms for pick-up arms of record players

US4266783A · kind A · utility

2Cited by

2References

6Claims

0Family size

Assignee

The Braun Corporation · DE

Inventors

Udo Milutzki · Walldorf, DE
Harry Gaus · Kronberg, DE
Dietwald Schotte · Eschborn, DE
Klaus Ramspeck · Frankfurt am Main, DE

Key dates

Filing date	Mar 14, 1978
Grant date	May 12, 1981
Priority date	—
Expiry date	Mar 14, 1998

Classification

Technology area (CPC G)Physics
CPC primaryG11B3/08516
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A control mechanism for raising, swinging and lowering the pick-up arm of a record player comprising a disc having an arcuately shaped depression in the periphery thereof. The contacts of an electrical contact sensor switch are located in the disc peripheral depression and bridging of these contacts will cause generation of a first command signal for the control mechanism. Devices for generating second and possibly third command signals are associated with the disc which may be rotatably mounted.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.