US 9,812,033 B2
Tactile graphic display
Venkatesh R. Chari, North Andover, MA (US); and Randell Drane, Winchester, MA (US)
Assigned to Venkatesh R. Chari, North Andover, MA (US)
Filed by Venkatesh R. Chari, North Andover, MA (US)
Filed on Sep. 10, 2015, as Appl. No. 14/850,393.
Application 14/850,393 is a continuation in part of application No. 13/799,300, filed on Mar. 13, 2013, granted, now 9,142,143.
Claims priority of provisional application 61/773,671, filed on Mar. 6, 2013.
Prior Publication US 2015/0379895 A1, Dec. 31, 2015
Int. Cl. G09B 21/00 (2006.01)
CPC G09B 21/004 (2013.01) 17 Claims
OG exemplary drawing
 
1. One or more frame assemblies of an apparatus for a graphic tactile display, the one or more frame assemblies comprising:
a plurality of hollow actuator chambers;
a plurality of hollow shaft chambers, the hollow shaft chambers extending perpendicular to the hollow actuator chambers;
a plurality of actuators received within the plurality of hollow actuator chambers;
a plurality of drive shafts received with the hollow shaft chambers; and
a plurality of cams operably connecting the actuators to the drive shafts;
wherein each actuator operably rotates each cam about an axis of the actuator in a first direction from a down position of the cam to an up position thereby extending each drive shaft upwardly;
wherein each actuator operably rotates each cam about the axis of the actuator in a second direction opposite to the first direction to the down position of the cam thereby retracting each drive shaft downwardly; and
wherein each of the plurality of cams has a profile which maintains each drive shaft in its up position or down position without power from each actuator.