Coupling mechanism for electric toothbrush

US10869742B2 · kind B2 · utility

Assignee

• The Braun Corporation · DE

Inventors

• Thomas Fritsch · Eppstein, DE
• Irina Neusser · Kronberg, DE
• Joern Utsch · Eschborn, DE

Key dates

• Filing date: Jun 22, 2018
• Grant date: Dec 22, 2020
• Expiry date: Mar 19, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C17/3436
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A coupling mechanism for an electric toothbrush includes a handle coupling portion and a refill coupling portion structured and configured to engage one another, thereby providing a secure connection between the handle and the refill. The handle coupling portion has a coupling stem disposed at one end of the handle and a coupling pin protruding from the stem. The coupling stem has outer walls terminating at a free end thereof. The refill coupling portion has a tubular structure having refill walls and an interior space for receiving therein the coupling stem, and a pair of mutually opposite and resiliently deformable cantilevered arms disposed in the interior space, each of the arms terminating with a coupling surface for engaging the coupling pin of the handle coupling portion.