US 12,215,761 B2
Linear motion device
David R. Hall, Provo, UT (US); Michael Hall, Provo, UT (US); and Cody Rees, Provo, UT (US)
Assigned to Hall Logic, Inc., Provo, UT (US)
Filed by Hall Labs LLC, Provo, UT (US)
Filed on Mar. 31, 2020, as Appl. No. 16/836,853.
Prior Publication US 2021/0301907 A1, Sep. 30, 2021
Int. Cl. F16H 19/06 (2006.01); B66B 1/34 (2006.01); B66B 1/52 (2006.01); B66B 9/00 (2006.01); B66C 11/18 (2006.01); B66C 19/00 (2006.01)
CPC F16H 19/06 (2013.01) [B66B 1/3461 (2013.01); B66B 1/52 (2013.01); B66B 9/00 (2013.01); B66C 11/18 (2013.01); B66C 19/00 (2013.01); B66B 2201/4623 (2013.01); B66B 2201/4638 (2013.01); B66B 2201/4653 (2013.01); F16H 2019/0686 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for moving an object linearly comprising:
a line in the form of a loop;
a slider comprising:
a plurality of first stacked pulleys with first stacked grooves;
a plurality of second stacked pulleys with second stacked grooves; and
a drum with a plurality of alpha grooves alternating with a plurality of beta grooves;
wherein the circumference of each alpha groove of the drum is greater than the circumference of each beta groove on the drum and the circumference of each first stacked groove is greater than the circumference of each second stacked groove; and
wherein the long axes of the plurality of first stacked pulleys, the drum, and the plurality of second stacked pulleys are parallel in a plane, the plurality of first stacked pulleys being adjacent a first end of the slider, the plurality of second stacked pulleys being adjacent a second end of the slider, and the drum being between the plurality of first stacked pulleys and the plurality of second stacked pulleys;
a first end pulley rotating at a first angle so as to transition the line passing over a last groove of the beta grooves to pass over a last groove of the alpha grooves;
the plurality of first stacked pulleys rotating at a second angle so as to transition the line passing over the last groove of the alpha grooves to pass over a last groove of the first stacked grooves and onto a previous groove of the alpha grooves;
a second end pulley rotating at a third angle so as to transition the line passing over a first groove of the alpha grooves onto a first groove of the beta grooves;
the plurality of second stacked pulleys rotating at a fourth angle so as to transition the line passing over the first groove of the beta grooves to pass over a first groove of the second stacked grooves and onto a next groove of the alpha grooves;
whereupon when any of the drum, the first end pulley, or the second end pulley is driven, the difference in the circumferences of the alpha grooves and the beta grooves and the difference in the circumferences of the first stacked grooves and the second stacked grooves causes the slider to move toward one of the first or second end pulleys.