Leveling sensor/switch W/hydraulic control valve for vehicle leveling systems
US7000927B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | May 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H29/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention consists of a Level Sensing Device and Hydraulic Control Valve, which, when, as a team, is applied to a system with a Hydraulic Pump W/Oil Reservoir, three or four Hydraulic Jacks, three or four Normally-Open Solenoid-Operated In-Line Hydraulic Valves, and piped and wired as described in this document, will provide a completely automatic leveling system for Recreational Vehicles, such as, Motorhomes, Pick-up Campers, and Camping Trailers. This Leveling Sensor/Switch and Hydraulic Control Valve can also be retro-fit into any exsisting manually-operated or semi-automatic hydraulic leveling system and, as a team, make it a completely automatic leveling system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.