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US 8,262,532 B2Granted
Low-ratio reducer-multiplier transmission system
AssigneeSapa Placencia, S.L.
InventorsPedro Aoiz Miguel, I{hacek over (n)}igo Garcia-Eizaga Telleria
Life of this patent
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Abstract
A low-ratio transmission system configured to obtain the multiplication or reduction of speed, and the reduction or multiplication of stress between an input shaft and an output shaft with at least four different values, such that the input-output ratio can be close to one and furthermore that the four values form a geometric progression close to one.
Claims4
A low-ratio transmission system, comprising:
- an input;
- an output;
- a first ring gear of a first planet gear;
- a first planet carrier of the first planet gear;
- a first sun gear of the first planet gear;
- a second sun gear of a second planet gear;
- a second ring gear of the second planet gear;
- a second planet carrier of the second planet gear;
- a first brake control element;
- a second brake control element;
- a first clutch control element;
- a second clutch control element;
- and
- a casing;
- wherein the transmission system acts as a multiplier when arranged in a first configuration in which movement of the input is carried out by the first planet carrier and movement of the output is carried out by the first ring gear of the first planet gear;
- and
- wherein the first sun gear of the first planet gear is joined to the second planet carrier of the second planet gear when the transmission system is arranged in the first configuration, and wherein the second sun gear and the second ring gear of the second planet gear are restricted by the control elements in the following manner:
- the first brake control element joins the second sun gear of the second planet gear to the casing when activated;
- the first clutch control element joins the second sun gear of the second planet gear to the movement input when activated;
- the second brake control element joins the second ring gear of the second planet gear to the casing when activated;
- the second clutch control element joins the second ring gear of the second planet gear to the movement output when activated.
18 more elements
Dependencies are inferred from the claim text.