Apparatus for closing pittsburgh seams associated with duct assemblies and other box-shaped members
US9375776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2012 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Apr 16, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D39/023
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A vertical Pittsburgh seam closing apparatus having a base supporting surface for positioning a duct section thereon in a vertical orientation, a track mechanism for moving a carriage assembly which holds seam forming members used to close a Pittsburgh seam, a pair of upper and lower guide members for guiding the duct section into a proper position, and upper and lower clamping members movable between an unclamped position and a clamped position wherein each clamping member is positioned inside the duct section and adjacent the inside portion of the Pittsburgh seam to be closed, the upper guide members and clamping member being selectively movable and adjustable for accommodating different duct section lengths. In one embodiment, the seam forming assembly includes a pair of roller members mounted in vertical arrangement to each other, one roller member being V-shaped in configuration and the other roller member being substantially cylindrical in shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.