Pumps – Expansible chamber type – Valved piston
Patent
1973-07-05
1976-02-03
Husar, C. J.
Pumps
Expansible chamber type
Valved piston
92 98R, 417566, F04B 3910
Patent
active
039362450
ABSTRACT:
A diaphragm compressor includes a cylindrical piston and an annular diaphragm member with a central hub secured by a grommet within an annular recess in the piston face. The outer peripheral edge of the diaphragm is affixed between a clamp ring and a valve plate which has a central recess to form a compression chamber. The diaphragm has a convolution which opens toward the compression chamber. The valve plate has a projection complementing and mating with the convolution. A plurality of circumferentially spaced and radial intake ports lead to an annular piston intake opening inwardly of the diaphragm. A flexible, tee-shaped valve member includes a stem locked within the piston with a planar sealing disc having an outer bead abutting the inner piston face and overlying the intake opening. The stem may pass through a central opening with an outer stem enlargement creating a resilient clamping of the valve member to a holding portion of the piston. The valve plate is formed of a thickness corresponding to the holding portion of the piston and an identical valve member is secured therein overlying a plurality of circumferentially distributed exhaust openings. The mounting plate, output plate and clamping ring are stacked and clamped together by peripheral U-shaped spring members. The piston is connected to a vibrating drive element, with a pair of opposed compressors having the pistons resiliently coupled to the opposite sides of the drive element.
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patent: 3645651 (1972-02-01), Bills
Husar C. J.
Johnson Service Company
Sessions O. T.
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