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Destornillador eléctrico con acceso a zonas muy restringidas


Oferta Tecnológica
Una universidad técnica alemana ha desarrollado un destornillador eléctrico sin cable que puede utilizarse con una sola mano y cuyo eje flexible permite su acceso a zonas muy restringidas. Este dispositivo es fácil de manejar y cómodo de llevar gracias al guante que incorpora, y puede emplearse durante sesiones de trabajo largas sin producir tensión en la muñeca. Gracias a su eje flexible, ofrece una distribución óptima del peso. Actualmente no existen muchas herramientas de este tipo. La universidad busca socios industriales potenciales con el fin de establecer acuerdos de licencia.


Electric screwdriver with access to very restricted areas
A technical university in Germany invented a cordless electric screwdriver wearable on the hand. A flexible shaft enables the screwdriver to access very restricted places. There is a lack of suitable tools in the actual state of the art. The German university offers potential industrial partners the opportunity for licensing agreements.
Cordless screwdrivers are nowadays must-have components for any professional craftsman as well as for private do-it-yourself projects and repairs. The market offers a wide array of tailored products spanning a big range of functionalities, dimensions and prices. The most common tools have a T-Handle or a pistol grip and offer a comfortable grip facilitating the handling and avoiding hand fatigue and strain.

In situations where it is necessary to access an area with very restricted space, however, there is a lack of suitable tools in the actual state of the art. Offset screwdrivers with an angled head are the solutions proposed to fasten screws positioned, for example behind a radiator. This kind of tool requires the use of both hands and needs a certain space. All in all a continuous work flow is not really possible with the existing models.

Therfore a technical university in Germany invented a cordless electric screwdriver that is wearable on the hand. The flexible shaft runs over the back of the hand transferring the torque effectively to the screwdriver tip which can be precisely addressed with the index finger. The entire compressive force required at the bit is transferred across the guiding structure into the frame of the screwdriver mounted at the hand. The human finger does not have to bring up the compressive force since the structure can be locked in the working position.

The handle offers a comfortable grip and an easy access to the power-switch on the side with the thumb. The device is easy to handle, comfortable to be worn through the supplied glove and can be used for long working sessions without strain on the wrist. It has an optimum distribution of the weight due to the flexible shaft running over the back of the hand. An additional switch inverts the rotation direction to unscrew the screws. The ergonomic shape of the flexible electric screwdriver simplifies inserting and removing screws in many working positions and can also be used for drilling.

A video of the invention can be found at the following link:

The German university offers the opportunity for license agreements to industrial companies in the field of handcrafted mechanical production.
Advantages and Innovations:
This device provides several advantages over conventional instruments:
- Enables access to areas with a small clearance
- Easy to handle and comfortable to wear
- Suitable for a long continuous assembly/disassembly session
Stage of Development:
Prototype available for demonstration
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
Patent application in Germany

Partner sought

Type and Role of Partner Sought:
The German university offers the opportunity for license agreement to companies or other organisations in the field of handcrafted tool production.

The partner sought should contribute to the further development of the tool in order to adapt it to the interest of the customer and/or the application area and make it ready for the market.


Type and Size of Client:
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
02002009 Machine Tools
02006001 Materials, components and systems for construction
02002007 Técnicas de unión (remachado, atornillado, encolado)