High pressure duct clamp and method of use
US4133566A · kind A · utility
Inventor
Key dates
| Filing date | Jun 23, 1977 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Jun 23, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49954
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for permanently and sealably connecting two duct sections, the duct sections having peripheral flanges forming opposite and corresponding halves of a composite, T-shaped peripheral flange extending outwardly from the duct sections. The composite flange has an upper cross-piece portion and a lower upright portion, the lower upright portion of the T-shaped flange containing a continuous reservoir of deformable gasket material. The method comprises the steps of first placing square-cornered, U-shaped clamps over the upper cross-piece portion of the T-shaped flange at spaced intervals thereon; secondly, pressing sides of each of the clamps inwardly and crimping the clamps to upper and lower surfaces of the upper cross-piece portion, forcing a portion of the gasket material to flow from the reservoir between the flange halves, towards the duct sections, thereby producing a sealed joint between the duct sections; and thirdly, rippling each of the clamps simultaneously with the upper cross-piece portion adjacent each of the clamps, causing undulations in both which prevent the clamps from slipping out of clamping contact with the upper portion of the T-shaped flange…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.