Duct forming machine
US5186704A · kind A · utility
8Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1992 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Apr 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/0067
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A duct closure machine for closing duct board into duct with tape which can close duct having four or more sides. Duct board is moved through the machine by a single source of power driving upper and lower rollers with the lower set of rollers movable to accomodate duct of different size. The tape applicator is shiftable laterally to apply tape to duct of different number of sides such as ten sides. The tape applicator is controlled with a simple power circuit in which power to cut off the tape is only applied for a brief time as the completed duct passes through the machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.