Reply to Office Action of August 6, 2019
`
`Application No. 15/487,058
`
`- 2 -
`
`MURASHIMA er a].
`
`Amendment to the Claims
`
`This listing of claims will replace all prior versions, and listings, of claims in the application.
`
`1. (Currently Amended) A hydraulic transaXle, comprising:
`
`a hydraulic pump having a variable displacement, wherein the hydraulic pump includes a
`
`movable swash plate and a pair of trunnion shafts coaxial to each other, the pair of trunnion shafts
`
`being joined to the swash plate separably from the swash plate,
`
`wherein the swash plate is rotatable centered on a common aXis of the trunnion shafts to
`
`control the displacement of the hydraulic pump, the common aXis of the trunnion shafts defining an
`
`aXial direction of the trunnion shafts perpendicular to a rotary aXis of the hydraulic pump, and
`
`a transaXle casing incorporating the hydraulic pump,
`
`wherein the transaXle casing includes a pair of side walls opposite each other in the aXial
`
`direction of the trunnion shafts with respect to the hydraulic pump,
`
`wherein the transaXle casing includes a pair of casing holes each of which penetrates each of
`
`the side walls between an inside of the transaXle casing and an outside of the transaXle casing,
`
`wherein the pair of trunnion shafts are passed through the respective casing holes to be
`
`pivotally supported by the respective side walls of the transaXle casing,
`
`wherein the swash plate is formed with a pair of side portions opposite each other in the aXial
`
`direction of the trunnion shafts, the pair of side portions facing the respective side walls in the
`
`inside of the transaXle casing,
`
`wherein the swash plate is formed with a pair of swash plate holes in the respective side
`
`portions, the pair of swash plate holes being open to the pair of casing holes, respectively
`
`wherein proximal end portions of the respective trunnion shafts are inserted into the
`
`respective swash plate holes to be engaged to the swash plate unrotatably, relative to the swash
`
`plate, and
`
`wherein a distal end portion of one of the trunnion shafts projects from the corresponding
`
`casing hole to the outside of the transaXle casing so as to be operatively connected to an operation
`
`device for controlling the displacement of the hydraulic pump,
`
`the hydraulic transaXle further comprising:
`
`Atty. Dkt. No. 06664980003
`
`
`
`Application No. 15/487,058
`
`- 2 -
`
`MURASHIMA er a].
`
`Amendment to the Claims
`
`This listing of claims will replace all prior versions, and listings, of claims in the application.
`
`1. (Currently Amended) A hydraulic transaXle, comprising:
`
`a hydraulic pump having a variable displacement, wherein the hydraulic pump includes a
`
`movable swash plate and a pair of trunnion shafts coaxial to each other, the pair of trunnion shafts
`
`being joined to the swash plate separably from the swash plate,
`
`wherein the swash plate is rotatable centered on a common aXis of the trunnion shafts to
`
`control the displacement of the hydraulic pump, the common aXis of the trunnion shafts defining an
`
`aXial direction of the trunnion shafts perpendicular to a rotary aXis of the hydraulic pump, and
`
`a transaXle casing incorporating the hydraulic pump,
`
`wherein the transaXle casing includes a pair of side walls opposite each other in the aXial
`
`direction of the trunnion shafts with respect to the hydraulic pump,
`
`wherein the transaXle casing includes a pair of casing holes each of which penetrates each of
`
`the side walls between an inside of the transaXle casing and an outside of the transaXle casing,
`
`wherein the pair of trunnion shafts are passed through the respective casing holes to be
`
`pivotally supported by the respective side walls of the transaXle casing,
`
`wherein the swash plate is formed with a pair of side portions opposite each other in the aXial
`
`direction of the trunnion shafts, the pair of side portions facing the respective side walls in the
`
`inside of the transaXle casing,
`
`wherein the swash plate is formed with a pair of swash plate holes in the respective side
`
`portions, the pair of swash plate holes being open to the pair of casing holes, respectively
`
`wherein proximal end portions of the respective trunnion shafts are inserted into the
`
`respective swash plate holes to be engaged to the swash plate unrotatably, relative to the swash
`
`plate, and
`
`wherein a distal end portion of one of the trunnion shafts projects from the corresponding
`
`casing hole to the outside of the transaXle casing so as to be operatively connected to an operation
`
`device for controlling the displacement of the hydraulic pump,
`
`the hydraulic transaXle further comprising:
`
`Atty. Dkt. No. 06664980003
`
`
`
`Reply to Office Action of August 6, 2019
`
`Application No. 15/487,058
`
`- 3 -
`
`MURASHIMA er a].
`
`a control arm provided on an outside end portion of a corresponding one of the side
`
`walls of the transaxle casing to be fixed on the distal end portion of the one of the trunnion
`
`shafts so as to operatively connect the swash plate to the operation device; and
`
`a neutral biasing mechanism for biasing the swash plate to a neutral position for the
`
`hydraulic pump,
`
`wherein the trunnion shafts are identical in shape to each other, and
`
`wherein the neutral biasing mechanism is provided on an outside end portion of the other of
`
`the side walls of the transaxle casing to be provided on a distal end portion of the other of the
`
`trunnion shafts.
`
`2. (Canceled)
`
`3. (Canceled)
`
`4. (Original) The hydraulic transaxle according to claim 1, further comprising:
`
`a control arm provided on an outside end portion of a corresponding one of the side walls of
`
`the transaxle casing to be fixed on the distal end portion of the one of the trunnion shafts so as to
`
`operatively connect the swash plate to the operation device; and
`
`a neutral biasing mechanism for biasing the swash plate to a neutral position for the
`
`hydraulic pump,
`
`wherein the trunnion shafts are identical in shape to each other, and
`
`wherein the neutral biasing mechanism is provided on an outside end portion of the other of
`
`the side walls of the transaxle casing to be provided on a distal end portion of the other of the
`
`trunnion shafts.
`
`5. (Previously Presented) A hydraulic transaxle, comprising:
`
`a hydraulic pump having a variable displacement, wherein the hydraulic pump includes a
`
`movable swash plate and a pair of trunnion shafts coaxial to each other, the pair of trunnion shafts
`
`being joined to the swash plate separably from the swash plate,
`
`Atty. Dkt. No. 0666.4980003
`
`
`
`Reply to Office Action of August 6, 2019
`
`Application No. 15/487,058
`
`- 4 -
`
`MURASHIMA er a].
`
`wherein the swash plate is rotatable centered on a common aXis of the trunnion shafts to
`
`control the displacement of the hydraulic pump, the common aXis of the trunnion shafts defining an
`
`aXial direction of the trunnion shafts perpendicular to a rotary aXis of the hydraulic pump, and
`
`a transaXle casing incorporating the hydraulic pump,
`
`wherein the transaXle casing includes a pair of side walls opposite each other in the aXial
`
`direction of the trunnion shafts with respect to the hydraulic pump,
`
`wherein the transaXle casing includes a pair of casing holes each of which penetrates each of the
`
`side walls between an inside of the transaXle casing and an outside of the transaXle casing,
`
`wherein the pair of trunnion shafts are passed through the respective casing holes to be
`
`pivotally supported by the respective side walls of the transaXle casing,
`
`wherein the swash plate is formed with a pair of side portions opposite each other in the
`
`aXial direction of the trunnion shafts, the pair of side portions facing the respective side walls in the
`
`inside of the transaXle casing,
`
`wherein the swash plate is formed with a pair of swash plate holes in the respective side
`
`portions, the pair of swash plate holes being open to the pair of casing holes, respectively
`
`wherein proximal end portions of the respective trunnion shafts are inserted into
`
`the respective swash plate holes to be engaged to the swash plate unrotatably, relative to
`
`the swash plate,
`
`wherein a distal end portion of one of the trunnion shafts projects from the corresponding
`
`casing hole to the outside of the transaXle casing so as to be operatively connected to an operation
`
`device for controlling the displacement of the hydraulic pump wherein the transaXle casing includes
`
`at least two housing members joined to each other at a joint plane parallel to the common aXis of the
`
`trunnion shafts, and
`
`wherein one of the at least two housing members is formed integrally with the pair of side
`
`walls having the respective casing holes.
`
`6. (Previously Presented) The hydraulic transaXle according to claim 5, further comprising:
`
`Atty. Dkt. No. 0666.4980003
`
`
`
`Reply to Office Action of August 6, 2019
`
`Application No. 15/487,058
`
`- 5 -
`
`MURASHIMA er a].
`
`a control arm provided on an outside end portion of a corresponding one of the side walls of
`
`the transaxle casing to be fixed on the distal end portion of the one of the trunnion shafts so as to
`
`operatively connect the swash plate to the operation device; and
`
`a neutral biasing mechanism for biasing the swash plate to a neutral position for the
`
`hydraulic pump,
`
`wherein the trunnion shafts are identical in shape to each other, and
`
`wherein the neutral biasing mechanism is provided on an outside end portion of the other of
`
`the side walls of the transaxle casing to be provided on a distal end portion of the other of the
`
`trunnion shafts.
`
`7. (Previously Presented) A hydraulic transaxle, comprising:
`
`a hydraulic pump having a variable displacement,
`
`a movable swash plate disposed in the hydraulic pump,
`
`a transaxle casing including the hydraulic pump, and
`
`a pair of trunnion shafts rotatably mounted to the transaxle casing in a pair of casing holes,
`
`respectively, the pair of trunnion shafts being disposed coaxial to each other and being removably
`
`fixed to the swash plate,
`
`wherein the swash plate is rotatably centered on a common axis of the trunnion shafts to
`
`control the displacement of the hydraulic pump, the common axis of the trunnion shafts being
`
`perpendicular to a rotary axis of the hydraulic pump, and
`
`wherein the casing holes penetrate a side wall of the transaxle case between an inside of the
`
`transaxle casing and an outside of the transaxle casing such that the trunnion shafts are configured
`
`to be removed through the casing holes to the exterior of the transaxle casing,
`
`wherein a distal end portion of one of the trunnion shafts projects from the corresponding
`
`casing hole to the outside of the transaxle casing so as to be operatively connected to an operation
`
`device for controlling the displacement of the hydraulic pump, and
`
`wherein the swash plate is configured to be removable from the transaxle casing in a
`
`direction along the rotary axis of the hydraulic pump after removal of the trunnion shafts.
`
`Atty. Dkt. No. 0666.4980003
`
`
`
`Reply to Office Action of August 6, 2019
`
`Application No. 15/487,058
`
`- 6 -
`
`MURASHIMA er a].
`
`8. (New) The hydraulic transaXle according to claim 7, wherein the pair of side p
`
`ortions of the swash plate are formed with respective distal end surfaces that are adjacent to inside
`
`surfaces of the respective side walls of the transaXle casing so that a width of the swash plate
`
`between the distal end surfaces in the aXial direction of the trunnion shafts is equal to or slightly less
`
`than a distance between the inside surfaces of the side walls of the transaXle casing in the axial
`
`direction of the trunnion shafts.
`
`9. (New) The hydraulic transaXle according to claim 7, wherein the transaXle casing includes at least
`
`two housing members joined to each other at a joint plane parallel to the common aXis of the
`
`trunnion shafts, and
`
`wherein one of the at least two housing members is formed integrally with the pair of side
`
`walls having the respective casing holes.
`
`10. (New) The hydraulic transaXle according to claim 7, further comprising:
`
`a control arm provided on an outside end portion of a corresponding one of the side walls of
`
`the transaXle casing to be fixed on the distal end portion of the one of the trunnion shafts so as to
`
`operatively connect the swash plate to the operation device, and
`
`a neutral biasing mechanism for biasing the swash plate to a neutral position for the
`
`hydraulic pump,
`
`wherein the trunnion shafts are identical in shape to each other, and
`
`wherein the neutral biasing mechanism is provided on an outside end portion of the other of
`
`the side walls of the transaXle casing to be provided on a distal end portion of the other of the
`
`trunnion shafts.
`
`Atty. Dkt. No. 0666.4980003
`
`
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