Water gate control system
US4073147A · kind A · utility
Inventor
Key dates
| Filing date | Sep 8, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Sep 8, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B7/44
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention discloses a water gate control system which selects either the automatic mode or forced mode, in the automatic mode the gate being automatically swung depending upon the level of a stream or water-way between the upright or closing position and the flat or opening position by a single- or double-acting hydraulic cylinder in which a directly or indirectly spring loaded piston is displaced depending upon the hydraulic pressure acting on the gate, and in the forced mode, the working oil under pressure being introduced into the hydraulic cylinder for swinging the gate to and holding it in a desired angular position independently of the level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.