Electrical timepiece with hour-hand adjustment

US4415272A · kind A · utility

Assignee

• Kieninger & Obergfell Fabrik fur Technische Laufwerke und Apparate

Inventor

• Hans Heinzelmann · Schramberg, DE

Key dates

• Filing date: Oct 30, 1981
• Grant date: Nov 15, 1983
• Expiry date: Oct 30, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G04B27/005
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A battery-operated watch or clock has a knob which is axially shiftable been a first terminal position recessed in a rear housing wall and a second terminal position projecting therefrom. In the recessed position, in which the knob is manually rotatable upon removal of a battery cover surrounding same, its rotation resets both the minute and hour hands of the timepiece to enable its adjustment, especially upon a replacement of a spent battery. In the projecting position, such rotation only displaces the hour hand to facilitate a changeover between standard and daylight-saving time or an adjustment to a different time zone.