1. A power transmitting assembly comprising:
a housing defining a cavity;
a differential assembly having a differential case and a differential gearset received in the differential case;
a pair of tapered roller bearings mounted to opposite ends of the differential case, the tapered roller bearings supporting the differential assembly for rotation in the cavity of the housing about a differential axis; and
a lubricant received in the cavity;
wherein a first one of the tapered roller bearings is oriented to generate a flow of lubricant that is directed toward the differential case;
wherein an oil gallery is formed through the differential case to direct the flow of lubricant into the differential case to lubricate the gearset.
2. The power transmitting assembly of claim 1, wherein the oil gallery has a first end proximate the one of the tapered roller bearings and wherein at least one location along the length of the oil gallery has a lateral cross-section that is smaller than a lateral cross-section of the first end.
3. The power transmitting assembly of claim 1, wherein the housing and the differential case cooperate to form a labyrinth that restricts lubricant discharged from the first one of the tapered roller bearings from flowing along a path that is radially outwardly of the oil gallery.
4. The power transmitting assembly of claim 3, wherein the labyrinth comprises an annular collar, which is coupled to the differential case, and a counterbore that is formed in the housing, wherein the annular collar extends into the counterbore and is disposed radially outwardly of a location on the first one of the tapered roller bearings through which the flow of lubricant emanates.
5. The power transmitting assembly of claim 1, wherein an axial end of the oil gallery adjacent the first one of the tapered roller bearings has a radially inward side that tapers outwardly with increasing distance away from the first one of the tapered roller bearings.
6. The power transmitting assembly of claim 1, wherein the housing at least partly defines a lubricant reservoir adjacent to the first one of the tapered roller bearings on a side of the first one of the tapered roller bearings opposite the oil gallery.
7. The power transmitting assembly of claim 6, wherein the housing further defines a lubricant sump that is configured to hold a majority of the lubricant, and wherein the lubricant reservoir is separated from the lubricant sump.
8. The power transmitting assembly of claim 6, wherein rotation of the differential assembly in the housing generates splash lubrication and wherein the housing comprises a lubricant passage into which a portion of the splash lubrication drains, the lubricant passage being coupled in fluid communication to the lubricant reservoir.
9. The power transmitting assembly of claim 1, wherein a lubricant reservoir is at least partly formed by the first one of the tapered roller bearings, the lubricant reservoir being disposed on a side of the first one of the tapered roller bearings opposite the oil gallery.
10. The power transmitting assembly of claim 9, wherein rotation of the differential assembly in the housing generates splash lubrication and wherein the housing comprises a lubricant passage into which a portion of the splash lubrication drains, the lubricant passage being coupled in fluid communication to the lubricant reservoir.
11. A power transmitting assembly comprising:
a housing defining a cavity;
a differential assembly having a differential case and a differential gearset received in an interior chamber in the differential case, the differential case defining a tubular bearing mount and a plurality of oil galleries, the tubular bearing mount terminating at a radially extending shoulder, each oil gallery intersecting the radially extending shoulder at a first end, each oil gallery extending through the differential case and communicating with the interior chamber; and
a tapered roller bearing mounted to the tubular bearing mount, the tapered roller bearing supporting the differential assembly for rotation in the cavity of the housing about a differential axis, the tapered roller bearing being oriented such that it is adapted to generate a flow of lubricant during operation of the power transmitting assembly, the flow of lubricant being directed toward the differential case and at least partly received into the oil galleries to lubricate the gearset;
wherein at least one location along the length of each oil gallery has a lateral cross-section that is smaller than a lateral cross-section of that oil gallery’s first end.
12. The power transmitting assembly of claim 11, wherein the first end of each oil gallery has a radially inward side that tapers outwardly with increasing distance away from the first one of the tapered roller bearings.
13. The power transmitting assembly of claim 11, wherein the housing and the differential case cooperate to form a labyrinth that restricts lubricant discharged from the tapered roller bearing from flowing along a path that is radially outwardly of the oil galleries.
14. The power transmitting assembly of claim 13, wherein the labyrinth comprises an annular collar, which is coupled to the differential case, and a counterbore that is formed in the housing, wherein the annular collar extends into the counterbore and is disposed radially outwardly of a location on the tapered roller bearing through which the flow of lubricant emanates.
15. The power transmitting assembly of claim 11, wherein the housing at least partly defines a lubricant reservoir adjacent to the tapered roller bearing on a side of the tapered roller bearing opposite the oil gallery.
16. The power transmitting assembly of claim 15, wherein the housing further defines a lubricant sump that is configured to hold a majority of the lubricant, and wherein the lubricant reservoir is separated from the lubricant sump.
17. The power transmitting assembly of claim 15, wherein rotation of the differential assembly in the housing generates splash lubrication and wherein the housing comprises a lubricant passage into which a portion of the splash lubrication drains, the lubricant passage being coupled in fluid communication to the lubricant reservoir.
18. The power transmitting assembly of claim 11, wherein a lubricant reservoir is at least partly formed by the tapered roller bearing, the lubricant reservoir being disposed on a side of the tapered roller bearing opposite the oil galleries.
19. A power transmitting assembly comprising:
a differential case; and
a differential gearset received in an interior chamber in the differential case;
wherein the differential case defines a tubular bearing mount and a plurality of oil galleries, the tubular bearing mount terminating at a radially extending shoulder, each oil gallery intersecting the radially extending shoulder at a first end, each oil gallery extending through the differential case and communicating with the interior chamber, and wherein at least one location along the length of each oil gallery has a lateral cross-section that is smaller than a lateral cross-section of that oil gallery’s first end.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-11. (canceled)
12. A manufacturing method of a laminated mold comprising a laminate being formed by laminating a plurality of thin sheets in a widthwise direction or in a peripheral direction of a tire comprising the steps of,
laminating the thin sheets under the condition that excess portions of respective thin sheets on the side of a tire stepping face exceeding a profile of a tire crown portion are left, and after laminating the thin sheets removing the excess portions by means of a shot blast.
13. The manufacturing method of the laminated mold according to claim 12, characterized in that aluminum powder is used as the material to be injected.
14. The manufacturing method of the laminated mold according to claim 12 characterized in that, after masking boundary portions of respective thin sheets, removal of the excess portions is performed by means of blasting.
15. A manufacturing method of a laminated mold comprising a laminate being formed by laminating a plurality of thin sheets in a widthwise direction or in a peripheral direction of a tire comprising the steps of,
previously tapering respective thin sheets on the side of a tire stepping face so as to have an angle approximately the same angle corresponding to the profile of a tire crown portion, and after tapering the thin sheets, proceeding lamination of those thin sheets.
16. The manufacturing method of the laminated mold according to claim 15, the thin sheets are tapered by a laser machining.
17. The manufacturing method of the laminated mold according to claim 15, the thin sheets are tapered by a shot blast.
18. The manufacturing method of the laminated mold according to claim 12, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
19. A laminated mold comprising of a laminate being formed of a plurality of thin sheets laminated in a peripheral direction of a tire, characterized in that bumps are provided on the lamination surfaces of respective thin sheets in a thicknesswise direction thereof so that thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
20. A laminated mold consisting of a laminate according to claim 19 characterized in that the bumps are formed by a press work.
21. A laminated mold consisting of a laminate according to claim 19 characterized in that thickness of the thin sheets falls in the range of 0.1\u02dc3 mm.
22. The manufacturing method of the laminated mold according to claim 13 characterized in that, after masking boundary portions of respective thin sheets, removal of the excess portions is performed by means of blasting.
23. The manufacturing method of the laminated mold according to claim 12, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
24. The manufacturing method of the laminated mold according to claim 13, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
25. The manufacturing method of the laminated mold according to claim 14, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
26. The manufacturing method of the laminated mold according to claim 15, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
27. The manufacturing method of the laminated mold according to claim 16, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
28. The manufacturing method of the laminated mold according to claim 17, when laminating a plurality of the thin sheets in a peripheral direction of the tire comprising the steps of,
providing bumps on lamination surfaces of respective thin sheet in a thicknesswise thereof so that the thin sheets are caused to mutually abut in a laminationwise direction through the bumps so as to fix spacing between the thin sheets.
29. A laminated mold consisting of a laminate according to claim 20 characterized in that thickness of the thin sheets falls in the range of 0.1\u02dc3 mm.