Collapsible high speed extension for motor vehicles
US4441751A · kind A · utility
Inventor
Key dates
| Filing date | Nov 24, 1980 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D35/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A collapsible vehicle extension assembly for vehicles and a method for fabrication of such an assembly. The extension has an elastomeric outer shell and an inner structure of flexible non-stretchable membranes which define a plurality of separate air chambers when a gaseous medium is introduced into the outer shell. The interior membranes are semi-permeable to allow gradual equalization of pressures throughout the assembly during inflation while preventing the instantaneous deflation of each chamber from impact on the outer shell. Various interior chamber configurations are shown as well as a plurality of inflation techniques for different purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.