Patent · US Active

Discharge state indicator

US9989596B2 · kind B2 · utility

0Cited by

6References

15Claims

0Family size

Assignee

The Gillette Company LLC · US

Inventors

Torsten Klemm · Bad Soden, DE
Gerrit Rönneberg · Darmstadt, DE

Key dates

Filing date	Mar 12, 2012
Grant date	Jun 5, 2018
Priority date	—
Expiry date	Sep 8, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB26B19/388
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A circuit for displaying the state of a battery that is almost discharged features a battery, an inductive load, and a controllable switch connected in series. The circuit also includes a display element connected in series with the inductive load and the battery. The controllable switch is opened when a voltage of the battery is lower than a first threshold level and is only closed again when the voltage of the battery is greater than a second threshold level. The circuit may also include a control circuit having a comparator which compares the voltage of the battery with the first threshold level and the second threshold level and triggers the controllable switch accordingly.

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