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US 7,112,156 B2Granted
Transmission with miniature motor for control to oil flow
AssigneeGeneral Motors Corporation
InventorJoel M. Maguire
Life of this patent
Estimating the term…
Abstract
A transmission includes a plurality of fluid passages configured to transmit fluid through the transmission for operating the transmission. A miniature electric motor is operatively connected to a moveable blocker positioned in one of the passages for actuating movement of the blocker between an open position in which fluid is allowed to flow through the passage, and a closed position in which the passage is blocked.
Claims8
A transmission comprising:
- a clutch;
- a valve body;
- a plurality of fluid passages configured to transmit fluid through the transmission for operating the transmission, wherein said plurality of fluid passages further comprises at least one additional passage located external to said valve body, and wherein said at least one additional passage is operatively connected between said valve body and said clutch to thereby direct oil flow between said valve body and said clutch;
- and
- a miniature electric motor operatively connected to a moveable blocker positioned in said at least one additional passage for actuating movement of the blocker between an open position in which fluid is allowed to flow through the additional passage, and a closed position in which the additional passage is blocked.
2 more elements
A transmission comprising:
- a plurality of fluid passages configured to transmit fluid through the transmission for operating the transmission;
- a miniature electric motor operatively connected to a moveable blocker positioned in one of said passages for actuating movement of the blocker between an open position in which fluid is allowed to flow through the passage, and a closed position in which the passage is blocked;
- wherein the miniature motor is positioned in said one of the passages and bathed in the fluid;
- wherein the miniature motor is operatively connected to a transmission controller;
- and
- wherein the miniature motor is less than 5 millimeters in width and less than 10 millimeters in length.
3 more elements
Dependencies are inferred from the claim text.