Claims
- 1. An axial piston fluid translating unit including a housing having an intake port and an output port each terminating at one end at a porting surface in the housing, a rotatable shaft extending into the housing, a cylinder barrel disposed in the housing and supported for rotation with the shaft and having a fluid intake-output end and defining a plurality of cylinder bores, a plurality of pistons reciprocally disposed in the cylinder bores, the intake-output end of the barrel is disposed in proximate facing relation to the porting surface of the housing, comprising:
- an axially floating barrel plate disposed between the housing porting surface and the intake-output end of the barrel and being connected for rotation with the barrel in axially spaced relation to the intake-output end thereof, the barrel plate having a first annular surface in face sealing engagement with the porting surface and a plurality of fluid ports each communicating between one of the cylinder bores and the housing porting surface for sequential communication with the intake and output ports,
- a plurality of counterbores defined in the barrel in generally surrounding relation to the fluid ports,
- seal means interposed between the barrel and barrel plate in sealing relation around each cylinder bore, the seal means including a plurality of annular seal rings each having a sealing end defining an annular seal face, the annular seal rings being disposed one in each of the counterbores in face sealing relation to the barrel plate, and
- means for urging the seal rings toward the barrel plate, the means for urging the seal rings comprising a resilient member disposed in the respective counterbores.
- 2. The axial piston fluid translating unit of claim 1 wherein the resilient member comprises an annular metallic spring.
- 3. The axial piston fluid translating unit of claim 2 wherein each of the seal rings has an annular seal face having a predetermined width and an outer periphery defining a circumferential sealing surface thereon, the annular seal rings being disposed one in each of the counterbores in circumferential sealing relation of a predetermined length thereto, the predetermined length of sealing relation between the circumferential sealing surface and the counterbore being no greater than the predetermined width of the annular sealing face.
- 4. The axial piston fluid translating unit of claim 2 wherein each of the seal rings has a cylindrical portion extending into the associated cylinder bore and an annular flange extending radially outwardly into the associated counterbore, the annular spring being interposed between the flange and the barrel.
- 5. The axial piston fluid translating unit of claim 2 wherein the annular metallic spring includes a generally annular flat base plate having a plurality of resilient fingers extending angularly therefrom.
- 6. The axial piston fluid translating unit of claim 5, wherein the annular base plate of the metallic spring is secured to the seal ring.
- 7. The axial piston fluid translating unit of claim 1 wherein the resilient member comprises an annular metallic spring.
- 8. The axial piston fluid translating unit of claim 7, wherein the barrel includes a face sealing surface in generally surrounding relation to the fluid ports in the barrel plate.
- 9. The axial piston fluid translating unit of claim 8 wherein the intake-output end of the barrel includes an annular protrusion of a predetermined length disposed around each of the cylinder bores and defining the face sealing surface.
- 10. The axial piston fluid translating unit of claim 9 wherein the barrel plate includes a second annular surface disposed in facing axially spaced relation to the intake-output end of the barrel and defines a recess extending from each of the counterbores to the second annular surface with each of the recesses being of a depth with respect to the length of the protrusions sufficient to maintain the axially spaced relation of the second annular surface with respect to the intake-output end of the barrel.
- 11. An axial piston fluid translating unit including a housing having an intake port and an output port each terminating at one end at a porting surface in the housing, a rotatable shaft extending into the housing, a cylinder barrel disposed in the housing and supported for rotation with the shaft and having a fluid intake-output end and defining a plurality of cylinder bores, a plurality of pistons reciprocally disposed in the cylinder bores, the intake-output end of the barrel is disposed in proximate facing relation to the porting surface of the housing, comprising:
- an axially floating barrel plate disposed between the housing porting surface and the intake-output end of the barrel and being connected for rotation with the barrel in axially spaced relation to the intake-output end thereof, the barrel plate having a first annular surface in face sealing engagement with the porting surface and a plurality of fluid ports each communicating between one of the cylinder bores and the housing porting surface for sequential communication with the intake and output ports,
- a plurality of counterbores defined in the barrel plate in generally surrounding relation to the fluid ports,
- seal means interposed between the barrel and the barrel plate in sealing relation around each cylinder bore, the seal means including a plurality of annular seal rings each having a sealing end defining an annular seal face, the annular seal rings being disposed one in each of the counterbores in face sealing relation to the barrel, and
- means for urging the seal rings toward the means for urging the seal rings comprising a resilient member disposed in the respective counterbores.
DESCRIPTION
This is a continuation-in-part of application Ser. No. 07/821,420 filed on Jan. 15, 1992, now abandoned.
US Referenced Citations (7)
Non-Patent Literature Citations (1)
Entry |
Application Ser. No. 07/821,421 filed Jan. 15, 1992 Title: A Seal Ring With Attached Biasing Means. Inventor: William K. Engel. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
821420 |
Jan 1992 |
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