Bar or rod or tube frame multi-position assembly clamp
US4311407A · kind A · utility
Inventor
Key dates
| Filing date | Nov 7, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Nov 7, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7194
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bar or rod or tube clamp-type connector for assembling a frame to be covered by a woven fabric or tarpaulin or plastic film or sheet wherein the clamp-type connector comprises at least two rigid metal elements and one pierced resilient or cushioning element and wherein each rigid element includes a recessed portion having an inner friction surface which is grooved or knurled and a pierced flange having rounded corners extending therefrom and a bolt capable of being tightened by a nut and extending through the pierced flange of each rigid element and the pierced resilient or cushioning element, such clamp-type connector being capable of clamping two bars or rods or tubes in parallel or angular relation to produce a frame to be covered by material in contact with the frame and the rounded corners of the flanges of the connector elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.