US 5,963,011 A · System with interchangeable battery and two chargers

Abstract

The present invention relates to an interchangeable battery for a battery-operated electric tool with a contact arrangement which, in order to charge the battery cell or cells by means of a charger having open counter-contacts, has at least a first freely accessible contact area per contact by means of which the battery can be connected to the counter-contact of the charger, the interchangeable battery is constructed according to the invention in such a way that it can also be charged by means of a charger with a screened contact region in that either the contacts of the battery are contact pins or blades which can be inserted into a contact region screened as far as a closely restricted aperture of a charger with screened counter-contacts or the contacts of the battery have a region screened by a wall which has such a wall thickness that the contacts with the entire wall can be inserted into the screened contact region.

Claims12

Dependent claims

A system for a battery-operated electric tool, comprising:

an interchangeable battery;
and two chargers for the interchangeable battery, wherein:
one of said chargers is provided with exposed counter-contacts and the other of said chargers with shielded counter-contacts carrying line voltage said shielded counter-contacts being situated inside of a contact region where they are shielded except for closely restricted plug-in apertures;
said interchangeable battery being provided with a contact arrangement having a first freely accessible contact surface per contact, said contacts of said interchangeable battery consisting of one of contact reeds, arbors and pins which protrude from a surface of said interchangeable battery;
and
said contacts of said interchangeable battery being arranged so that at least one of said first freely accessible contact surface or a contact surface perpendicular thereto engages a corresponding counter-contact of either one of said chargers so that the interchangeable battery can be charged from either charger.

3 more elements

Dependencies are inferred from the claim text.

System with interchangeable battery and two chargers

Life of this patent

System with interchangeable battery and two chargers

Life of this patent

Abstract

Claims12