05458315 is referenced by 30 patents and cites 17 patents.

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.

Title
Multi-tiered system of leveller units
Application Number
947220
Publication Number
5458315
Application Date
January 27, 1994
Publication Date
October 17, 1995
Inventor
Gordon G Wilson
Calgary
CA
David J King
Calgary
CA
Warren J Blatz
Calgary
CA
Agent
Dykema Gossett
Assignee
Tri Lynx Corporation
TX, US
IPC
E02C 3/00
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