Are you familiar with the ImpactStik swing exerciser? I was not until the patent application published a few weeks ago.

The patent application describes the invention as:

Components of a golf exerciser are contained within a tube that can be swung in a simulated golf swing independently of a golf club. Within the tube is an extension spring connected to a weight so that centrifugal force developed during swinging the tube can move the weight toward a distal end of the tube. There, a shock absorber is positioned for the weight to impact against whenever sufficient arcuate tube velocity is achieved. The shock absorber includes a deformable elastomer that cushions and stops the distal movement of the weight and also makes a sound indicating that a swing of sufficient velocity has been achieved.

The application published as US Pub. No. 20070123399 titled “Golf Swing Exerciser.” Check out the following figures from the application.

Interesting invention. Good luck with the ImpactStik!

David Dawsey - Monitoring Golf Training Device Patents

PS – I will never understand why an attorney would submit a patent application with such informal drawings.