Apparatus for changing screen devices
US4082487A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1977 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Mar 28, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The disclosure concerns apparatus which automatically performs screen-changing functions associated with the use of screen devices for filtering extruded plastic materials. The apparatus includes a slide assembly with two apertured recesses for receiving screen devices, and mechanisms for aligning the recesses alternatingly with a direction of advance of the extruded plastic material. A screen device is replaced within one recess, as a screen device within the other recess filters the extruded plastic material. Such screen device replacement is provided through the automatic, sequential operations of screen device ejection, screen device carrier, screen device introducing and screen device reloading mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.