Trap gate valve assembly
US4312608A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1980 |
| Grant date | Jan 26, 1982 |
| Priority date | — |
| Expiry date | Mar 10, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06H3/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A portable, compact, unitized device for transferring articles by pneumatic means from a processing machine to a collection receptacle includes a chamber divided into two compartments by a perforated plate, and having a releasable closure cap at one end and a trap door at the opposite end. A port in one compartment is coupled to a vacuum source, and a work inlet port in the other compartment communicates with a work processing means. An actuator, completely encompassed within one compartment and mounted upon the releasable closure, includes a shutter moveable axially of the vaccum source port for controlling air flow through the compartments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.