Coupling component for breakaway pole bases
US4674907A · kind A · utility
14Cited by
5References
19Claims
0Family size
Inventor
Key dates
| Filing date | May 7, 1986 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | May 7, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B2200/63
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A frangible coupling assembly for breakaway pole bases has a pair of spaced and parallel plate with a plurality of struts extending therebetween and being situated between a pole base and a supporting base. Each strut is of an elongated cross-section with the longitudinal axis of the struts lying on the perimeter of a circle concentric with the central vertical axis of the plates thereby providing an increased resistance to torsional loads and at the same time relatively lower resistance to lateral force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.