Material or article handling – Motion or draft responsive load handler and transporter – Ground engageable means
Patent
1979-03-23
1980-12-30
Jenkins, Robert W.
Material or article handling
Motion or draft responsive load handler and transporter
Ground engageable means
222383, 222409, F04B 2300
Patent
active
042420580
ABSTRACT:
A manually operatable dosage pump comprising a cylinder, a piston movable therein between two end positions, and inlet and outlet passages communicating with the cylinder space and each containing a one-way valve or check valve. The piston is adapted to interrupt communication between said inlet and outlet passages in at least one of the end positions of the piston. Thus, a valve member mounted on the piston may cooperate with valve seats formed in a valve chamber axially aligned with the cylinder space.
REFERENCES:
patent: 1181837 (1916-05-01), Campbell
patent: 1188097 (1916-06-01), Pearsons
patent: 2140679 (1938-12-01), McKeever
patent: 2995451 (1961-08-01), Leach
A/S N. Foss Electric
Jenkins Robert W.
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