Bypass and demand pump and valve system for bypass and demand pump
US12241462B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2024 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Jun 28, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/1207
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diaphragm pump such as a three-chamber diaphragm pump includes a head having an inlet port and an outlet port and defining an inlet side including inlet chambers; and an outlet side having a center outlet chamber. Each of the inlet chambers includes an associated inlet valve. A single shutoff valve controlling fluid flow to the center outlet chamber and a single bypass valve in fluid communication between the center outlet chamber and the inlet side. The single shutoff valve has a plunger with an oval cross-section extending into the center outlet chamber. The single shutoff valve and the single bypass valve have adjustable pressure set points that are adjustable independently of one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.