Compound epicyclic transmission systems
AssigneeWilson Miller & Co., Ltd.
InventorAlbert Arthur Miller
Life of this patent
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Abstract
A vehicle transmission comprises an epicyclic change-speed unit in series with a supplementary two-speed unit having a direct drive ratio and an indirect overdrive or reduction ratio, thereby doubling the number of ratios provided by the change-speed unit. A further ratio is provided by a compound connection between the change-speed and supplementary units.
Claims15
A vehicle transmission comprising an epicyclic change-speed gear unit constructed to provide at least two reduction ratios between its input member and its output member by the application of braking means selectively to arrest the rotation of one or another of its reaction members, and a supplementary two-speed unit constructed to provide selectively a direct drive or unitary ratio and an indirect ratio differing from unity, the two units being connected so that the overall ratio is the product of the selected ratios of the two units, wherein connecting means are provided for selectively establishing (1) a first driving connection to one of the said reaction members of the change-speed unit from the output member of the supplementary two-speed unit operating in its indirect ratio and (2) a second driving connection between the input member of the change-speed gear unit and the input member of the supplementary two-speed unit.
Dependencies are inferred from the claim text.