Back to results
US 12,025,112 B2Granted
Piston body including an internal space for use in a hydraulic pump or motor
AssigneeKomatsu Ltd.
InventorsShunsuke Koide, Hiroaki Motoshima, Shigeyoshi Kawakita
Life of this patent
Estimating the term…
Abstract
A piston is provided with a piston body that includes an internal space and a leading end member that includes an insertion portion placed in the internal space and a protrusion protruding from a leading end surface of the piston body.
Claims10
A piston comprising:
- a piston body including an internal space;
- a leading end member including an insertion portion placed in the internal space and a protrusion protruding from a leading end surface of the piston body,
- wherein the leading end surface is placed around an opening of the piston body connected to the internal space, and the leading end member has an opposed surface facing the leading end surface;
- and
- an oil passage disposed between the leading end surface and at least a part of the opposed surface and between an inner surface of the internal space and at least a part of an outer surface of the insertion portion,
- wherein an outer shape of the protrusion is larger than that of the insertion portion and extends beyond the piston body.
3 more elements
A piston comprising:
- a piston body including an internal space;
- a leading end member including an insertion portion placed in the internal space and a protrusion protruding from a leading end surface of the piston body;
- and
- a connection member placed in the internal space and connected to the insertion portion,
- wherein the insertion portion includes a deformable portion placed around the connection member and configured to deform outward in a radiation direction of a central axis of the piston body upon contact with the connection member.
2 more elements
A piston comprising:
- a piston body including an internal space;
- a leading end member including an insertion portion placed in the internal space and a protrusion protruding from a leading end surface of the piston body,
- wherein the leading end surface is placed around an opening of the piston body connected to the internal space, and the leading end member has an opposed surface facing the leading end surface;
- and
- an oil passage disposed between the leading end surface and at least a part of the opposed surface and between an inner surface of the internal space and at least a part of an outer surface of the insertion portion,
- wherein the leading end member includes a through hole parallel to the central axis of the piston body.
3 more elements
Dependencies are inferred from the claim text.