Piston retainer plate
AssigneeHamilton Sundstrand Corporation
InventorsJonathon Rothmeyer, Edward Goy
Life of this patent
Estimating the term…
Abstract
A piston retainer plate includes a first end, a second end opposite the first end, a piston pocket extending from the first end to the second end, a straight annular surface extending from the first end, an angled annular surface extending at an angle from the second end, a curved annular surface connected to the straight annular surface and the angled annular surface, the curved annular surface being between the straight annular surface and the angled annular surface, and a curved vent within the curved annular surface. The straight annular surface, the angled annular surface, and the curved annular surface define the piston pocket.
Claims20
A piston retainer plate comprising:
- a first end;
- a second end opposite the first end;
- a piston pocket extending from the first end to the second end;
- a straight annular surface extending from the first end;
- an angled annular surface extending at an angle from the second end;
- a curved annular surface connected to the straight annular surface and the angled annular surface, the curved annular surface being between the straight annular surface and the angled annular surface;
- and
- a curved vent within the curved annular surface;
- wherein the straight annular surface, the angled annular surface, and the curved annular surface define the piston pocket.
A piston assembly comprising:
- a piston comprising:
- a piston shaft;
- and
- a curved piston portion extending from the piston shaft adjacent an end of the piston shaft;
- and
- a piston retainer plate comprising:
- a straight annular surface extending from a first end;
- an angled annular surface extending at an angle from a second end;
- a curved annular surface connected to the straight annular surface and the angled annular surface;
- and
- a curved vent within the curved annular surface;
- wherein the piston extends through the piston retainer plate, and the curved vent of the piston retainer plate is positioned within the curved annular surface at a portion of the curved annular surface that has the most contact with the curved piston portion of the piston.
A piston assembly for a bent-axis fuel variable displacement piston pump, the piston assembly comprising:
- a piston configured to move on a bent axis;
- and
- a piston retainer plate configured to hold the piston, the piston retainer plate comprising:
- a piston pocket extending through the piston retainer plate, the piston pocket being configured to hold the piston;
- a curved annular surface that defines a portion of the piston pocket;
- and
- a curved vent in the curved annular surface, the curved vent being configured to receive fuel from within the piston pocket when the piston is moving toward the curved annular surface and release fuel into the piston pocket when the piston is moving away from the curved annular surface.
Dependencies are inferred from the claim text.