Diaphragm pump having a flat plate actuating member slidable in

Details Diaphragm pump having a flat plate actuating member slidable in Diaphragm pump having a flat plate actuating member slidable in

1984-07-24

1986-02-18

Freeh, William L.

Pumps

Expansible chamber type

417413, 417571, 92100, 74 49, F04B 4302, F01B 1902

Patent

active

045711607

ABSTRACT:
A diaphragm pump of the type having a housing forming a pump chamber, a diaphragm attached to an outer periphery thereof to the housing within the chamber, inlet and outlet valves communicating with the chamber, and a motor having an eccentrically rotating driveshaft, in which a connecting rod is attached to the diaphragm and includes a substantially flat portion which extends through slots formed in the housing, and an aperture which receives the drive shaft of the motor and is sized to form a slip fit therewith. The slots are shaped to slidably receive the flat portion of the rod and constrain its motion, when displaced by rotation of the drive shaft, to a single plane which is perpendicular to a rotational axis of the drive shaft, thereby eliminating the transmission of thrust and torsional loads between the rod and drive shaft so that the motor bearing life is increased.

REFERENCES:
patent: 375199 (1887-12-01), Roe
patent: 1595064 (1926-08-01), Barrett
patent: 2359960 (1944-10-01), Anderson
patent: 2463766 (1949-03-01), Hadley
patent: 2650545 (1953-09-01), Cornelius
patent: 2670691 (1954-03-01), Guiot
patent: 2748606 (1956-06-01), Cornelius
patent: 2981197 (1961-04-01), Dolza
patent: 3771911 (1973-11-01), Turci
patent: 3776666 (1973-12-01), Ludwig
patent: 3831548 (1974-08-01), Droege
patent: 4086036 (1978-04-01), Hagen et al.
patent: 4086037 (1978-04-01), Stewart
patent: 4458555 (1984-07-01), Holtzberg et al.

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