Tubular duct member
US9982806B2 · kind B2 · utility
1Cited by
28References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2013 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | May 13, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F13/0209
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubular duct member comprises a plurality of sheet metal panels 10, 12 joined along adjacent longitudinal edges by cooperating folded sheet metal catches 14, 16, the catches being pushed together such that respective detent surfaces 28, 30 on each catch engage behind one another to retain the edges of the sheets together. One of the catches 14 includes a body 36 of resilient material compressed between the catches and biasing the catches apart to maintain the detent surfaces 28, 30 bearing against one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.