US Patent 9682466 Ring light

A ring light is provided for rotary, spindle based machines such as mills and drills. The ring light is magnetically held to the machine about the spindle and may be moved along the spindle to any location thereon. The ring light may powered by a module containing batteries which may be replaceable or chargeable by a power supply or through induction. All three embodiments are disclosed. The construction is generally unitary with respect to the ring portion of the ring light and it may be constructed so that the power module is removable or as one piece with the ring portion.