Patent · US Expired

Double acting diaphragm pump

US4830586A · kind A · utility

75Cited by

4References

3Claims

0Family size

Assignee

ARO, Inc. · US

Inventors

Rolf Herter · Schwabach, DE
C. Bernard Sartran · Ratingen, DE
Arno Grabowski · Düsseldorf, DE

Key dates

Filing date	Dec 21, 1987
Grant date	May 16, 1989
Priority date	—
Expiry date	Dec 21, 2007

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B43/0736
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An improved double acting diaphragm pump utilizes at least one supplemental diaphragm and associated pressure chamber arranged coaxially with the connecting shaft of the main diaphragms. The supplemental chambers are connected via parallel pressure lines or conduits to the pressure source for the main diaphragms and associated pressure chambers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.