Patent ID: 9689189
Date: 2017-06-27
CPC Classifications: E05F,E05Y,E06B

Claim:
1. An apparatus comprising: (a) at least one motor coupled to a shaft, wherein the motor is configured to rotate the shaft bidirectionally; (b) a first arm, wherein the first arm has a first portion and a second portion and at least part of the second portion of the first arm is configured to slide into and out of the first portion of the first arm, (c) a second arm, wherein the second arm has a first portion and a second portion and at least part of the second portion of the second arm is configured to slide into and out of the first portion of the second arm, (d) a first connector connecting the shaft to the first arm, wherein the first connector passes through at least one opening in the first arm; and (e) a second connector connecting the shaft to the second arm, wherein the second connector passes through at least one opening in the second arm;