US 9,518,647 B2Granted

Lubricating device of automatic transmission

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsTomoaki Yanagida, Takaho Kawakami

Life of this patent

Estimating the term…

Loading patent…

Abstract

A lubricating device of an automatic transmission includes a partitioning member that partitions an oil chamber, to which a lubricating oil of a first oil chamber is introduced; a second oil chamber partitioned by the partitioning member and to which lubricating oil to supply to a forward clutch is introduced; and a third oil chamber partitioned by the partitioning member and to which lubricating oil to supply to a pinion unit such as a pinion gear coupled with one engagement unit of the forward clutch is introduced; wherein a clutch oil path that introduces the lubricating oil of the first oil chamber to the second oil chamber and a pinion oil path that introduces the lubricating oil of the first oil chamber to the third oil chamber are formed in a clutch drum interposed between the first oil chamber and the oil chamber.

Claims5

Dependent claims

A lubricating device of an automatic transmission comprising:

a first oil chamber, to which a lubricating oil is introduced;
a partitioning member configured to partition a space, to which the lubricating oil of the first oil chamber is introduced;
a second oil chamber partitioned by the partitioning member and to which a lubricating oil to supply to a forward clutch is introduced;
and
a third oil chamber partitioned by the partitioning member and to which a lubricating oil to supply to a pinion unit coupled with one engagement unit of the forward clutch is introduced, wherein
a clutch oil path that introduces the lubricating oil of the first oil chamber to the second oil chamber and a pinion oil path that introduces the lubricating oil of the first oil chamber to the third oil chamber are formed in a member interposed between the first oil chamber and the space in which the partitioning member is arranged, and
an oil path switching member that opens the clutch oil path and interrupts the pinion oil path at time of engagement of the forward clutch, and that interrupts the clutch oil path and opens the pinion oil path at time of release of the forward clutch is arranged.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/232,996Filed 21 Dec 2011
Published: US 2014/0166402 A119 Jun 2014
Granted: 13 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F16H 57/0473
Elements of gearings to be lubricated, cooled or heated: friction devices, e.g. clutches or brakes
F16H 57/0479
Elements of gearings to be lubricated, cooled or heated: gears or bearings on planet carriers
F16H 57/0484
Gearings with gears having orbital motion: with variable gear ratio or for reversing rotary motion
F16H
Gearing

Family

US 2014/0166402 A1Pre-grant publication · published 19 Jun 2014
US 9,518,647 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key