Vacuum feed mechanism
US4008889A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Jun 16, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H3/122
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pneumatically operated mechanism for feeding envelopes or other similar stacked articles from a stacked position into a second position where stamping, gluing or the like may be performed. The feed mechanism includes a pneumatic cylinder having a fixed piston rod and a movable cylinder driven by a slide wheel mechanism in such a manner as to create a vacuum at a reciprocating, article engaging, slide shuttle when the cylinder is moved in one direction. When the cylinder is moved in a reverse direction the vacuum is released, allowing the article engaging shuttle to return to the stacked articles for reapplying the vacuum for removing an article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.