Diaphragm pump having a flat plate actuating member slidable in slots
US4571160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1984 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Jul 24, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18248
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.