Pumps – Expansible chamber type
Patent
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.
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Henderson James M.
King Robert D.
Freeh William L.
Neils Paul F.
The Mead Corporation
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