Patent ID: 8888604
Filing Date: 2014-11-18
Classification: A63B,Y10T

Abstract:
1. A golf club head comprising at least: a shell made of electrically conducting material; an internal cavity; a club face for striking a golf ball; at least one sensor for measuring acceleration on three orthogonal axes, the at least one sensor mounted within said cavity; plurality of impact pressure sensing elements embedded in a monolith located within said club face, wherein the at least one sensor and plurality of impact pressure sensing elements are electrically connected to electronics that include: an antenna system electrically connected to said radio wave transceiver, the antenna system including at least two electrically conductive elements, wherein the first electrically conductive element is the said electrically conducting club head shell; an energy storage system electrically connected to said electronics to provide operational power to said electronics; and an energy harvesting assembly that harvests energy from impact pressure sensing elements generated power signal and uses the harvested energy to recharge said energy storage system, wherein the energy harvesting assembly applies a charge to the energy storage system from a portion of the energy from the impact pressure sensing elements, wherein the portion is extracted from the power signal in a ratio format such that a shape of a signal waveform from the impact pressure sensor elements applied to the electronics is not changed.