Ewald Hald

Title: Ewald Hald: Innovator in Power-Driven Tools

Introduction

Ewald Hald is a notable inventor based in Filderstadt, Germany. He has made significant contributions to the field of power-driven tools, holding a total of four patents. His innovative designs focus on enhancing the functionality and efficiency of tools used in various applications.

Latest Patents

Hald's latest patents include a power-driven screwdriver with a torque-dependent release clutch. This screwdriver features two clutch halves and additional entrainment elements that bridge the release clutch. The design allows for a motor-driven drive gear to rotate freely on a tool drive shaft, secured against axial displacement. An adjustable cam ring, along with the tool drive shaft, enables either a rigid through drive or a torque-dependent release of the clutch.

Another significant patent is for a motor-driven machine with variable torque settings. This machine incorporates a motor and planetary gearing that drives a work spindle. It features a rotatably mounted internal gear that actuates a motor de-energizer when a settable limit torque is exceeded. A torsion spring element, extending alongside the planetary gearing, generates the necessary spring force for this compact design.

Career Highlights

Ewald Hald has dedicated his career to the development of innovative tools at C & E. Fein GmbH & Co. His work has led to advancements in the design and functionality of power-driven machines, making them more efficient and user