Self-righting highway marker support and method for installing same
US4729690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1986 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Nov 10, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/629
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A self-righting roadway marker support for a flexible boundary or roadway marker has a hollow anchor sleeve sunk into a supporting surface, a mounting collar secured to said anchor sleeve, a pivot strut extending through and upward from the collar, a compressible coil spring to resiliently urge the strut into contact with the collar, and a spring stop which selectively limits the extent to which the coil spring may be compressed. An oblong, radiused or chamfered aperture formed in the collar cooperates with a spring-mounting eyebolt to prevent the strut from rotating when deflected. A tool is also disclosed for installing the marker support. The force required to deflect the support assembly is set to be less than the force that would destroy or permanently set or deform the boundary marker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.