Filling unit with air-operated spool valve system
US4055281A · kind A · utility
16Cited by
2References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Jun 11, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spool-type valve system for use with a high-speed filling machine, in which a solenoid valve controlled by the main shaft of the filling machine, selectively supplies air under pressure to a respective end of a pneumatically operated piston-cylinder unit of a spool valve assembly which selectively opens and closes the pump space with respect to the reservoir for the product to be filled while simultaneously closing and opening the pump space with respect to the discharge nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.