Lubricant system including a baffle

Patent metadata

Field	Value
Publication number	US-12480571-B2
Application number	US-202318541703-A
Country	US
Kind code	B2
Filing date	Dec 15, 2023
Priority date	Dec 15, 2023
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A gearbox including: a fixed housing; a first wheel housed in the fixed housing; a second wheel housed in the fixed housing; a duct, where the duct is fixed to the gearbox; and a baffle interposed between the first wheel and the second wheel, wherein the duct is configured to transport a fluid to the first wheel, wherein the baffle is configured to transport fluid from the first wheel to the second wheel, and wherein the baffle is fixed to the fixed housing.

First claim

The invention claimed is:

1 . A gearbox including:
a fixed housing; a first wheel housed in the fixed housing; a second wheel housed in the fixed housing; a duct, where the duct is fixed to the gearbox; and a baffle interposed between the first wheel and the second wheel, where the duct is configured to transport a fluid to the first wheel, where the baffle is configured to transport fluid from the first wheel to the second wheel, and where the baffle is fixed to the fixed housing, and where the first wheel has a first undercut groove and the second wheel has a second undercut groove.

2 . The gearbox of claim 1 , where the duct is configured to transport fluid to the first undercut groove.

3 . The gearbox of claim 2 , where the baffle is configured to transport fluid from the first undercut groove to the second undercut groove.

4 . The gearbox of claim 3 , where the fixed housing is configured to include a calm reservoir and a turbulent reservoir, where the calm reservoir and the turbulent reservoir are separated via a septum fixed to the fixed housing, where the duct fluidly couples the calm reservoir to turbulent reservoir, where the duct is fixed to the septum, where the first wheel is housed in the turbulent reservoir.

5 . The gearbox of claim 3 , where the first wheel rotationally couples to a first shaft and the second wheel rotationally couples to a second shaft.

6 . The gearbox of claim 3 , where the baffle includes a plurality of appendages configured to collect lubricant from the first undercut groove.

7 . The gearbox of claim 6 , where the baffle has an uppermost portion that includes the plurality of appendages, where the uppermost portion is encircled by the first undercut groove, where the uppermost portion is interposed between a lip and a shoulder of the first undercut groove.

8 . The gearbox of claim 7 , where the baffle includes a first appendage configured to distribute lubricant from the baffle to the second undercut groove.

9 . The gearbox of claim 8 , where the baffle further includes a second appendage and a third appendage, where the second appendage and third appendage are part of the uppermost portion, wherein the second appendage collects lubricant from the first undercut groove when the first wheel rotates in a first direction, and the third appendage collects lubricant from the first undercut groove when the first wheel rotates in a second direction.

10 . The gearbox of claim 6 , where the baffle has a wing assembly of at least a first wing and a second wing, where the wing assembly physically couples and fixes the baffle to the fixed housing.

11 . The gearbox of claim 10 , where the wing assembly is fixed to the fixed housing via a snap fit, where the first wing snaps to the fixed housing and the second wing snaps to the fixed housing.

12 . The gearbox of claim 1 , where the first wheel is a first gear and the second wheel is a second gear.

13 . A baffle including:
a platform; a first appendage that shares a continuous surface with the platform; a first fin that extends at a first angle above the platform; a second fin that extends at a second angle above the platform; and a wing assembly including a first wing and a second wing; wherein the baffle is interposed between a first wheel and a second wheel, the first wing and second wing have curved edges, and the baffle is configured to transport fluid from an undercut groove of the first wheel to the second wheel, wherein the first fin and the second fin are configured to collect fluid from the undercut groove, the first appendage is configured to distribute fluid from the baffle to the second wheel, and the baffle is fixed to a fixed housing via the wing assembly.

14 . The baffle of claim 13 , where an uppermost portion of the baffle that includes the first fin and the second fin is encircled by the undercut groove, where the uppermost portion of the baffle is interposed between a lip and a shoulder of the undercut groove.

15 . The baffle of claim 14 , where the first fin and the second fin are contiguous with the platform via a first connector and second connector, respectively, where the first connector and second connector extend from the platform at a third angle and a fourth angle, respectively, and the third angle and fourth angle equal to each other, where the first angle and the second angle are equal to each other, where the first angle is not equal to the third angle and the second angle is not equal to the fourth angle.

16 . The baffle of claim 15 , where the first fin and second fin are separated via a wedge, wherein the wedge is flanked by a first edge of the first fin and a second edge of the second fin.

Assignees

• Dana Italia Srl

Inventors

• Dallapiccola Matteo
• Rinaldi Pier Paolo
• Slater Mark

Classifications

• F16H57/045

  Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case · CPC title

• F16H57/0424

  Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes · CPC title

• F16H57/0423 Primary

  Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes · CPC title

• F16H57/0409

  characterised by increasing efficiency, e.g. by reducing splash losses · CPC title

• F16H57/0495

  with fixed gear ratio · CPC title