摘要:
This invention provides an apparatus for increasing the activity of the human brain which includes a section for cooling the head of a person and another section for warming his feet or legs.
摘要:
A video disc includes a magnetic material applied thereon in such a manner that the orientation of said magnetic material is gradually intensified from the outermost track of the video disc to the innermost track thereof, starting from zero orientation at the outermost track.
摘要:
A video disc includes a magnetic material applied thereon in such a manner that the orientation of said magnetic material is gradually intensified from the outermost track of the video disc to the innermost track thereof, starting from zero orientation at the outermost track.
摘要:
A golfclub includes a club head having two connected and opposed members which are spaced from one another whereby one of the members is adapted to strike a golfball such that the member vibrates to produce a sound by which a golfer can judge the area of the club head which strikes the golfball.
摘要:
A golfclub includes a head and gripping means adapted to be grasped by the right and left hands of a golfer which are disposed side by side to each other in a direction transversely to a plane including the striking face of the head.
摘要:
An acoustic device comprising a main body having a magnet attached thereto, a vibrating means disposed to cooperate with said magnet of said main body for converting an electrical vibration into a mechanical vibration or vice versa, and a means for floating up said vibrating means into disengagement with said main body.