Anchoring device
US5358209A · kind A · utility
70Cited by
11References
14Claims
0Family size
Inventor
Key dates
| Filing date | Jun 22, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Jun 22, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H12/2223
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An anchoring device for use on the shaft of a beach umbrella or the like, including a conical member that tapers to a rounded point and around which is spirally wound a constant pitch asymmetric buttress-type thread whose upper surface is perpendicular to the long axis of the conical member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.