Supports – Stand – To hold a particular article
Patent
1984-07-26
1986-11-11
Foss, J. Franklin
Supports
Stand
To hold a particular article
248349, F16M 1112
Patent
active
046217827
ABSTRACT:
Apparatus for mounting a movable superstructure on a fixed base is disclosed. The superstructure, a video display unit, is attached to a cylindrical segment journal which rests on a matching cylindrical segment socket. The journal rotates within the socket as the video display unit is tilted back and forth. Two helical springs are each attached to the superstructure and the base in such a way as to counteract gravitational forces and to tend to restore the superstructure to a neutral tilt angle when it is moved therefrom. The surfaces of the journal and socket have enough friction to exceed the relatively small differences between the gravitational forces tending to move the superstructure further from the neutral tilt angle and the spring forces tending to restore the superstructure thereto. As a result, the superstructure will maintain any position but can be moved (tilted) by overcoming only the relatively small frictional force. In one constructed model, a video display unit superstructure weighing 27.2 pounds (12.3 kilograms) was provided with a maximum backward tilt of 30 degrees and could be tilted to any position upon the application of a force of only three pounds (1.4 kilograms).
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Carlson Richard L.
Proetta William J.
AT&T Bell Laboratories
Foss J. Franklin
Purol David M.
Ulrich Werner
Visserman Peter
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