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Safety System for a hand held mixer with accessories

IP.com Disclosure Number: IPCOM000208361D
Publication Date: 2011-Jul-05
Document File: 4 page(s) / 329K

Publishing Venue

The IP.com Prior Art Database

Abstract

2011ID01332

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 44% of the total text.

Page 01 of 4

Title:Safety System for a hand held mixer with accessories

Abstract: The document describes a safety system for a hand held mixer.

With this system it is not possible for the consumer to operate the mixing / kneading accessories on the front area of the mixer and at the same time an additional accessory (e.g. hand blender accessory) on the rear area of the mixer. Furthermore it is only possible to attach the hand blender accessory on the rear side if the main switch is in off position. If the hand blender accessory is finally attached the user can only activate the mixer with a momentary push button. The document describes a smart application of electrical as well as mechanical detection and protection elements in order to secure the safety of the device in all conditions.

Keywords: Hand blender, hand held mixer, mixing kneading tools, safety

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Background

Hand mixers have a long history within the kitchen appliance sector. From the beginning onwards hand mixers were mainly known with one coupling area for mixing and kneading accessories on the front area. The high output torque of the front area coupling is generated via a gearing from a motor. But the higher output torque results also in a lower output speed which is well accepted for the mixing and kneading performance of the hand mixer.

In order to increase the versatility of the kitchen tool, different accessories like a hand blender are designed for the mixer. This accessory needs a much higher output speed in order to deliver good results. Therefore the rear area without the gearing between motor and coupling was designated for the high speed rotating tools.

As a result the mixer had two openings, one with low speed and high torque on the front and one with high speed on the rear side. This led to the development of safety systems for multi-functional hand held mixers. These systems are designed to prevent consumer injuries when operating the mixing / kneading accessories on the front area and at the same time an additional accessory (e.g. hand blender accessory) on the rear area of the mixer. Furthermore they ensure that the hand blender accessory can only be operated by a momentary push button which is an official IEC standard for household devices.

Companies in the segment have developed based on their appliance architecture either mechanical safety systems or full electrical safety systems or combi...