Piston filler
US4479758A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1981 |
| Grant date | Oct 30, 1984 |
| Priority date | — |
| Expiry date | Nov 25, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B13/02
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
A piston filler for metering two fluids intermittently comprising a cylinder having a first and a second inlet conduit and an outlet conduit, means for closing the communication between the cylinder and the first inlet conduit and between the cylinder and the outlet conduit alternately, there being present inside the cylinder a first piston for drawing in a primary fluid from the first inlet conduit and discharging it into the outlet conduit and a second piston for drawing in a secondary fluid from the second inlet conduit which piston has at least one port provided with one or more valves through which the secondary fluid can flow to occupy the space between the two pistons where it can transmit the motion of the second piston to the first piston, and means for conveying secondary fluid from the space between the pistons to the outlet conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.