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US 2021/0301907 A1Published application
Linear Motion Device
AssigneeHall Labs LLC
InventorsDavid R. Hall, Michael Hall, Cody Rees
Life of this patent
Estimating the term…
Abstract
A slider has a drum with alternating alpha and beta grooves, first stacked pulleys, and second stacked pulleys. First and second end pulleys are at opposite ends of the slider. A line wraps as a loop from the last beta groove, around the first end pulley, to the last alpha groove, back and forth around the first stacked pulleys, off the first alpha groove, around the second end pulley, to the first beta groove, back and forth around the second stacked pulleys, and back to the last beta groove. When the drum or the end pulleys are driven, the difference in circumferences of the grooves causes the slider to move toward one of the first or second end pulleys.
Claims20
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.
11 more elements
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;
- a first drum with a plurality of alpha grooves;
- a second drum with a plurality of beta grooves;
- and
- wherein the circumference of each alpha groove of the first drum is greater than the circumference of each beta groove on the second drum and the circumference of each first stacked groove is greater than the circumference of each second stacked pulleys;
- and
- wherein the long axes of the plurality of first stacked pulleys, the first drum, the second drum, and the plurality of second stacked pulleys are parallel in a plane, the plurality of first stacked pulleys adjacent a first end of the slider, the plurality of second stacked pulleys adjacent a second end of the slider, and the first drum and second drum adjacent and parallel each other and 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 first groove of the alpha grooves of the drum;
- the first stacked pulleys rotating at a second angle so as to transition the line passing over the alpha grooves of the drum onto a next groove of the alpha grooves;
- a second end pulley rotating at a third angle so as to transition the line passing over a last groove of the alpha grooves onto a first groove of the beta grooves of the drum;
- the second stacked pulleys rotating at a fourth angle so as to transition the line passing over the beta grooves of the drum onto a next groove of the beta 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.
12 more elements
Dependencies are inferred from the claim text.