Method of reinforcing a duct
US4315361A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49915
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A duct reinforcement and a method for building the reinforcement including a special tool for use in a preferred method are disclosed. The duct reinforcement icludes a support washer on each of two opposing sides of the duct to be supported and a stiff wire extending through the sides of the ducts and both washers. The portion of the wire protruding beyond each support washer on the outside of the duct forms a hook with a tip of the wire substantially opposed to the outer face of the respective support washer. A preferred form of the support washer forms a volcano-shaped contour surrounding the washer hole on the outer face so that the tip of the wire makes contact with the washer inside the crest of the volcano-shaped contour. A preferred arrangement includes a rubbery seal between each support washer and the respective side of the duct to prevent leakage from the duct. A preferred method for reinforcing a duct includes bending one end of a wire into a hook, placing a support washer against one side of the duct, inserting the non-hooked end of the wire through the support washer and both sides of the duct until the tip of the hooked end of the wire substantially opposes the outer …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.