Patent ID: 11940126
Assignee: GSCHOTT VENTURES LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 17:
18. A light fixture comprising:
a lamp having a light source;
a petal mechanism coupled to the lamp and having a plurality of petals and being moveable between an open position and a closed position;
a petal actuator coupled to the petal mechanism to controllably move the petals of the petal mechanism between the open position and the closed position, wherein the petal actuator comprises a stepper motor, a lead screw coupled to the stepper motor, and a cone coupled to the lead screw that works against a proximal end of each of the petals to move the petals; and
a screw nut housing, a first lead screw nut disposed in the screw nut housing and coupled to the lead screw to drive the petal actuator up and down as the lead screw is turned by the stepper motor and the screw nut housing, a second lead screw nut confined by the screw nut housing, and an anti-backlash spring to provide a constant force on the second lead screw nut.