Pumps – Expansible chamber type – Moving cylinder
Patent
1985-03-18
1990-02-20
Smith, Leonard E.
Pumps
Expansible chamber type
Moving cylinder
417466, F04B 1902
Patent
active
049022083
ABSTRACT:
A pump assembly (10) including a piston (12) connected to a rotating wheel (30) by a pin (32) radially offset from the axis of rotation of the wheel and a cylinder (14) in reciprocating telescoping relationship with the piston (12) and supported by a hollow shaft (26) for rotation in a housing member (24) so that the piston (12) rotates about the axis of a supporting shaft (22) extending transversely to the reciprocating movement while the cylinder (14) rotates about another axis transverse to the reciprocating movement with the distance between the two axes being adjustable to vary the displacement of the pumping chamber (16) between zero when the two axes coincide to a maximum degree when the two axes are spaced the maximum amount. The housing (24) rotatably supporting the hollow shaft (26) of the cylinder (14) includes two fixed fluid ports (50, 52) which alternately communicate with an axially aligned radial port (48) in the hollow shaft (26).
REFERENCES:
patent: 1671565 (1928-05-01), Astrom
patent: 2411929 (1946-12-01), Malke
patent: 2510903 (1950-06-01), Quiroz
patent: 4393844 (1983-07-01), Skinner
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