Method and apparatus for measuring the swing velocity of golf club heads
OwnerDaniel Youinventor
Life of this patent
Estimating the term…
Abstract
A tubular golf club shaft is formed with an area made of fiberglass through which you can see. A swing speed indicating device is fastened inside the shaft and visible through a fiberglass area so that you can read the speed indicated on the device. When the shaft is swung, an indicator moves inside the shaft to position an indicator along a scale on the shaft or the device so you can read various parameters derived from the velocity with which the club is swung. The shaft is formed by inserting a strip of translucent material such as fiberglass to overlap with adjacent strips of graphite material that form the shaft.
Claims31
A golf club shaft having a longitudinal axis, comprising
- a continuous wall encircling the longitudinal axis and forming a tubular shaft having a swing point located a predetermined distance from a grip end of the shaft, the wall having a segment of translucent material that is sufficiently translucent to see through located along a length of the longitudinal axis.
A golf club shaft having a longitudinal axis, comprising
- a tubular shaft having a wall encircling the longitudinal axis and forming a tapered shaft having a swing point located about 14 inches from a grip end of the shaft, the wall having a segment of translucent material that is sufficiently translucent to see with a portion of the translucent section located at the swing point;
- and
- a measurement device located inside the shaft and having an indicator the position of which changes depending on the velocity with which the shaft is swung, with at least a portion of the indicator being viewable through the translucent section.
A process for making a tubular golf club shaft, comprising:
- placing first, second and third strips of material around a mandrel having a longitudinal axis with the second strip being between the first and third strips, each of the strips having edges that overlap the adjacent strip, the first and third strips comprising graphite epoxy material and the second strip comprising a translucent material, the second strip overlapping with a portion of each of the first and third strips, the second strip having a length measured along the longitudinal axis that is shorter than the first and third strips;
- curing the strips of material to join the overlapping edges into a unitary shaft;
- and
- removing the shaft from the mandrel.
Dependencies are inferred from the claim text.