Air duct starting collar with quick mounting means
US5741030A · kind A · utility
22Cited by
6References
4Claims
0Family size
Inventors
Key dates
| Filing date | Dec 31, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Dec 31, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L41/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air duct starting collar having integral clips used for installation in a planar surface of an air duct. The flange of the device having a design permitting variance in hole size, and roughness of the hole's edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.