Shelving system having two sets of locking tapers
US4989519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jul 25, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B87/0223
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A shelving apparatus includes a vertically extending first leg having a first end with a frusto-conical outer surface. A horizontal shelf has a frusto-conical hole. A vertically extending second leg has a first end with (a) a frusto-conical inner surface having a taper shaped to engage the frusto-conical outer surface of the first leg, and (b) a frusto-conical outer surface having a taper shaped to engage the frusto-conical inner surface of the shelf hole. Preferably, all engaging frusto-conical surfaces and holes are coaxial and cofrustal. Alternative tapered structures for the first and second legs and shelf hole may be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.