Location History:
- Alingsas, SE (1979 - 1995)
- Alingsäs, SE (2004)
- Alingsås, SE (2004)
Company Filing History:
3 out of 1,122 
1 out of 2 
1 out of 5 Years Active: 1979-2004
Title: Leif Ennerdal: Innovator in Automotive Safety Technology
Introduction
Leif Ennerdal is a notable inventor based in Alingsas, Sweden, recognized for his contributions to automotive safety technology. With a total of seven patents to his name, Ennerdal has made significant advancements in safety devices that enhance the protection of vehicle occupants.
Latest Patents
Among his latest innovations is a seat-belt pre-tensioner. This device features an elongate housing that defines a chamber and includes a unit for movement along the housing. The unit is equipped with a piston that utilizes balls in a groove, allowing movement in one direction only. The piston is connected to a resilient spring and a connector element, which is in turn linked to a safety-belt. When actuated, gas from a generator moves the piston, compressing the spring and ensuring that any slack in the safety-belt is taken up effectively.
Another significant patent is a safety device designed for use in motor vehicles. This device incorporates a restraining net that is initially stored within a housing above the windscreen. The net is deployed in response to an accident, providing an additional layer of protection for passengers. The mechanism involves pull cords that are tensioned by a drive mechanism, ensuring the net extends tautly across the windscreen during an emergency.
Career Highlights
Leif Ennerdal has worked with prominent companies in the automotive industry, including Autoliv Development AB and Allied Engineering Company. His experience in these organizations has contributed to his expertise in developing innovative safety solutions.
Collaborations
Throughout his career, Ennerdal has collaborated with talented individuals such as Stig Pilhall and Dan Persson. These partnerships have fostered a creative environment that has led to the development of groundbreaking safety technologies.
Conclusion
Leif Ennerdal's work in automotive safety technology exemplifies his commitment to innovation and the protection of vehicle occupants. His patents reflect a deep understanding of safety mechanisms, making significant contributions to the field.