An oil-spraying apparatus includes: a base frame provided with a guide rail on an upper surface thereof; a mounting plate movably mounted on the guide rail by a rail block; a moving unit mounted at one side of the base frame so as to reciprocate the mounting plate on the base frame; and an oil-spraying...http://www.google.com/patents/US8186482?utm_source=gb-gplus-sharePatent US8186482 - Oil spraying apparatus
