Geometrical instruments
Patent
1977-04-27
1978-08-15
Lake, Roy
Geometrical instruments
339 5P, 339 34, H01R 3900
Patent
active
041068300
ABSTRACT:
A stand for supporting from below electrically energizable apparatus, includes a platform disposed above a base and adapted to support the apparatus. An electrical outlet is mounted on the platform for supplying electrical energy to the apparatus, and a power cord is connected to the base and is adapted to be coupled to a source of electrical energy. A bearing device in the form of ball bearings has a series of electrically conductive rollable bearing members or balls interposed between the platform and the base for supporting rollably the platform on the base to enable the platform to rotate freely about its vertical axis relative to the base in a continuous 360.degree. path of rotation and for coupling electrical energy to the electrical outlet. Upper and lower stationary contact devices are disposed within the closed loop path of travel and are composed of electrically conductive material, the upper stationary contact device being attached to the underside of the platform and the lower stationary contact device being attached to the top surface of the base. A first pair of electrical conductor leads are connected electrically at one of their ends to the power cord, the other end of the conductor leads being connected individually and electrically to the lower bearing race of the bearing device and to the lower stationary contact device. A second pair of electrical conductor leads are connected individually and electrically at one of their ends to the upper bearing race of the bearing device and to the upper stationary contact device, the other ends of the second pair of electrical conductor leads being connected electrically to the outlet. Thus, the electrical apparatus to be supported can be electrically connected to the outlet, and the apparatus can then be rotated about a vertical axis in a continuous 360.degree. manner indefinitely while being energized electrically.
REFERENCES:
patent: 2469884 (1949-05-01), Masone
patent: 2866956 (1958-12-01), Miller et al.
patent: 3189862 (1965-06-01), Vleerick et al.
patent: 3652972 (1972-03-01), Kreider
patent: 3701073 (1972-10-01), Lale
Jones DeWalden W.
Kleinke Bernard L.
Lake Roy
LandOfFree
Rotatable support stand does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotatable support stand, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotatable support stand will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1431407