Hydraulic leveling apparatus for recreational vehicle & the like
US4815711A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jul 31, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S9/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Apparatus for leveling a vehicle or the like comprising a power cylinder for selectively actuating the apparatus between a horizontal storage position and a vertical support position; mounting apparatus for fixedly mounting the power cylinder means on and beneath the vehicle; a piston operably associated with the power cylinder for upward and downward power driven movement relative thereto; and support apparatus pivotally connected to the piston for movement between a horizontal storage position and a vertical support position. The support apparatus includes a lowermost plate shoe for engaging the ground and a rigid leg extending upwardly from the shoe for connection to the piston rod. A pivot connection between the leg and the piston rod enables relative pivotal movement therebetween. An abutment on the lower end portion of the power cylinder engages a pair of laterally spaced curve cam surfaces fixedly located on an upper portion of the leg during the initial portion and the terminal portion of the movement of the piston rod for causing controlled pivotal movement of the support apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.