Post for traffic signals and the like
US4751801A · kind A · utility
Inventor
Key dates
| Filing date | Jul 17, 1986 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Jul 17, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/642
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Post for traffic signals, signs, information signs and the like comprising a foundation part fixed to the ground and a post part connected to the foundation part by a shock absorbing coupling which allows the post part to be released from the foundation part without the latter being substantially separated from the ground fixation. Personal damage is eliminated or reduced in an unintentional collision with the post by the coupling (5) which consists of at least two telescopically cooperating parts, one fixed to the foundation part (1) and the other fixed to the post part (6), which parts have a cooperating direction of displacement arranged perpendicular to the longitudinal axis of the post, and which telescoping parts frictionally contact at cooperating surfaces so that a friction force is generated by relative displacement of the parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.