Pumps – Expansible chamber type – Including valve assembly – disassembly – or inspection...
Patent
1986-05-08
1987-12-01
Smith, Leonard E.
Pumps
Expansible chamber type
Including valve assembly, disassembly, or inspection...
92100, 417537, 417540, F04B 2100
Patent
active
047101091
ABSTRACT:
A diaphragm pump has at least one double-acting piston moving in a cylinder closed at its ends by diaphragms and filled with oil. The diaphragms are capped by cylinder heads defining the chambers in which warping of the diaphragms produces the suction and discharge of liquid to be pumped through suction and discharge tubes each having a one-way valve therein. The diaphragms are centrally connected to the piston ends by screws whose screw heads have the form of a large diameter, concave metal cup. The screw head concavity faces the cylinder heads and has an internal surface provided with, for example, annular reliefs, ensuring a large contact surface between the screw heads and the pumped cooling liquid.
REFERENCES:
patent: 1798631 (1931-03-01), Rodler
patent: 2308041 (1943-01-01), Babitch et al.
patent: 2445978 (1948-07-01), Stellin
patent: 2741187 (1956-04-01), Moller
patent: 2813450 (1957-11-01), Dzus
patent: 3172369 (1965-03-01), Ballu
patent: 3209640 (1965-10-01), Waivers
patent: 3282145 (1966-11-01), Prescott
patent: 3878861 (1975-04-01), Pareja
patent: 4336824 (1982-06-01), Steineman
patent: 4607685 (1986-08-01), Mitchell, Jr.
Smith Leonard E.
Tecnoma
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