Erector for holding a leaf-flap in various opening settings
US5507475A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1994 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Aug 25, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/34
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An erector holds a leaf-flap in various opening settings relative to its frame, in particular for holding a motor-car hood. The erector has a continuously length-variable dynamic unit, which comprises, supported against the leaf-flap and frame, a hollow cylinder and a piston which is slidably guided in the hollow cylinder. The hollow-cylinder space is divided by the piston moved via a piston rod, into a two pressure-medium chambers which are overflow-connected, with a flow regulator being interposed therebetween. A control valve is disposed in one of two overflow ducts of the flow-regulator so that the assigned overflow duct, when the control valve is closed, is flow-blocked in both directions. The control valve is constantly flow-connected via a control duct to one of the pressure-medium chambers, and is acted upon by the pressure-medium column flowing through the control duct, so as to be transferred against a return force into a pass-through setting in which it is maintained up to a pressure level of the pressure-medium which is significantly lower than the control pressure of the control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.