Patent ID: 7993219

Claim:
A bat swing training aid comprising: A) a bat with a proximal handle, a barrel and a distal tip and a closed end receptacle extending proximally from an opening at the tip, and B) a training aid in said receptacle, said training aid comprising: i) a tubular housing having a threaded end adjacent the tip and means for attaching said housing to the bat at the closed end of said receptacle whereby said tubular housing is embedded in said bat, ii) a force adjuster threaded onto said tubular housing at the tip end for defining a distal stop, iii) a ring for sliding on said tubular housing between a cocked position proximate the closed end of said tubular housing and said adjuster, iv) restraining means for selectively restraining the axial position of said ring including: a) at least one ring-engaging finger passing through a slot proximate the handle end of said tubular housing, b) a cartridge slidably mounted in said tubular housing including bias means for contact with said adjuster, said cartridge retracting said at least one ring-engaging finger for releasing said ring from its cocked position to slide to the distal stop when said bat is swung, and c) means attached to said cartridge and extending through and beyond said force adjuster for enabling the manual displacement of said cartridge whereby said ring can return to its cocked position.