Acceleration activated energizing device

A nock for an arrow having an arrow axis and experiencing an initial acceleration and subsequent zero acceleration when shot from a bow, comprising:

• a body member having a light transmissive rearward portion engageable with said bow, and a forward portion insertable within said arrow and having a nock axis substantially alignable with said arrow axis;
• a light emitting device mounted within said body member rearward portion and having first and second terminals;
• a first cavity disposed within said body member forward portion, aligned with said mark axis and extending from a rearward end to a forward end;
• a second cavity disposed within said body member forward portion adjacent said first cavity;
• a battery located and freely slideably movable within said first cavity and having a rearward end and a first terminal extending to a forward face from which extends a rod-shaped second terminal of given diametric extent;
• first contact means for electrically coupling said battery first terminal with said light emitting device first terminal while permitting said freely slideable movement;
• second contact means within said second cavity, electrically coupled with said light emitting device second terminal for effecting select contact with said battery second terminal;
• and
• a position delimiter positioned intermediate said first and second cavities, aligned with said rod-shaped terminal and said second contact means and forcibly penetrable by said rod-shaped terminal under the application of a predetermined force to said battery to effect electrical contact between said battery second terminal and said second contact means.

The nock for an arrow having an arrow axis aligned along a hollow shaft and experiencing an initial acceleration and subsequent zero acceleration when shot from a bow, comprising:

• an elongate body member having a light transmissive rearward portion engageable with said bow, and forward portion insertable within said shaft and having a nock axis aligned with said arrow axis;
• a light emitting diode mounted within said body member rearward portion and having first and second terminals;
• a first elongate cavity disposed within said body member forward portion, symmetrically disposed about said nock axis and extending from a rearward end to a forward end;
• a second cavity disposed within said body forward portion adjacent said first cavity;
• a channel extending between said first and second cavities;
• a battery, freely slideably movable within said first cavity and having a rearward end providing a first electrode and extending to a forward face from which extends a rod-shaped second electrode of given diametric extent;
• a contact spring within said first cavity, having a predetermined spring rate, electrically coupled with said diode first terminal and extending into continuous, electrically communicating abutting contact with said battery rearward end;
• electrical contact means electrically coupled with said diode second terminal positioned within said second cavity for effecting select circuit coupling contact with said battery second terminal;
• a position delimiter located within said channel, aligned with said rod-shaped second electrode for penetration thereby under the application of a predetermined force to said battery to effect electrical contact with said electrical contact means;
• and
• an energy storage spring located within said first cavity in abutting relationship with said first cavity rearward end and compressively abuttably engageable with said battery rearward end during said arrow acceleration to effect a storage of energy sufficient, when released substantially upon said arrow's attainment of said zero acceleration, to slideably move said battery forwardly under said predetermined force.