Multi-tiered system of leveller units
US5458315A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Jan 27, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F7/243
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A multi-tiered system of leveller units for the levelling of recreational vehicles. The leveller units each comprise a planar body, with upper and lower surfaces circumscribed by edges. The body of each unit bears a plurality of pins upwardly extending from spaced locations in the upper surface and has a plurality of pin-engaging pockets formed in the lower surface to matably receive corresponding pins of other similar units. The pins are of slightly smaller size than the corresponding pockets so that when the pins of one unit are associated with the pockets of another, there is provided a loose engagement therebetween. The body may be formed of a discontinuous webbing providing light-weight strength and support to the units to support the large loads placed thereupon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.