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US 9,808,817 B2Granted
Paint sprayer floating pump
AssigneeGraco Minnesota Inc.
InventorsMariusz J. Luczak, Harold D. Johnson
Life of this patent
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Abstract
A fluid sprayer includes a pump motor, a piston, a pump housing, and an outer housing. The piston is reciprocatable by the pump motor. The pump housing comprises a pump chamber housing disposed to receive the piston, and a plurality of alignment pins extending laterally away from the pump chamber housing. The outer housing surround and anchors the pump motor, and has a plurality of internal lateral bores disposed to slideably receive and retain the alignment pins, such that the pump housing is free to self-align with the piston.
Claims19
A fluid sprayer comprising:
- a pump motor;
- a piston reciprocatable by the pump motor along a pump axis;
- a pump housing comprising:
- a pumping chamber housing disposed to receive the piston along the pump axis;
- and
- a plurality of alignment pins extending laterally away from the pumping chamber housing;
- and
- an outer housing surrounding and anchoring the pump motor, and having a plurality of internal lateral bores disposed to slideably receive the alignment pins, such that the pump housing is locked against axial movement along the pump axis and is free to self-align with the piston by movement within the outer housing along a dimension perpendicular to the pump axis.
5 more elements
Dependencies are inferred from the claim text.