Governor valve assembly
AssigneesAisin Seiki Kabushiki Kaisha, Toyota Jidosha Kubushiki Kaisha
InventorsKouichi Yamashita, Toshiaki Ishiguro, Kunio Morisawa
Life of this patent
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Abstract
A governor valve assembly for regulating hydraulic pressure by utilizing centrifugal force developed by the output shaft of a vehicle transmission when the output shaft is rotated has a first governor valve adapted for two-stage pressure regulation and a second governor valve for adapted for a single stage of pressure regulation disposed separately in a governor body supported on an output shaft. An output port of either one of the valves is communicated with a feed port of the other through a passageway in the governor body in order to obtain a three-stage hydraulic pressure characteristic.
Claims5
A governor valve assembly for regulating hydraulic pressure by utilizing centrifugal force developed by a rotary shaft when the rotary shaft is rotated, comprising:
- a governor assembly supported on the rotary shaft for co-rotation therewith;
- first governor valve means provided in said governor assembly and having;
- (a) a first feed port for receiving hydraulic pressure from an external source,
- (b) a first output port for delivering output hydraulic pressure,
- (c) a first valve radially slidable under centrifugal force in said governor assembly for regulating hydraulic pressure between said first feed port and said first output port,
- (d) a first shaft radially slidable interiorly of said first valve and cooperating with said first valve for regulating hydraulic pressure,
- (e) a governor weight fastened to an outer end portion of said first shaft for facilitating production of a centrifugal force, and
- (f) a first spring compressed radially between said first valve and said first shaft for applying a radially outwardly directed force upon said first valve;
- second governor valve means provided in said governor assembly and having:
- (g) a second feed port for receiving hydraulic pressure,
- (h) a second output port for delivering output hydraulic pressure,
- (i) a second radially extending shaft to be secured against radial movement to said governor assembly,
- (j) a second valve radially slidable under centrifugal force in said governor assembly along said second shaft for regulating hydraulic pressure between said second feed port and said second output port, and
- (k) a second spring compressed radially between said second valve and said second shaft for applying a radially outwardly directed force upon said second valve;
- and
- a passageway communicating said first output port of the first governor valve means with said second feed port of the second governor valve means.
Dependencies are inferred from the claim text.