Sandler, Greenblum & Bernstein
Battery terminal
 Notches are provided on the inside circumference surface of the annular post fittings of a battery terminal fit over a battery post. The sharp tips of these notches bite into the outside circumference surface of the battery post to prevent the battery terminal from rotating on the post. 
Sumitomo Wiring Systems, Ltd.
H
H01R
inventional
Hikaru Masakuni
Ito Kasugai