Back pressure flap valve arrangement and the use thereof
US10480666B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2015 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Apr 5, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K15/03
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a back pressure flap valve arrangement (1) comprising a housing (2) having an inlet opening (3) and an outlet opening (4). A flap (7) is pivotably hinged about a shaft (8) extending transverse a flow direction through the housing (2). A lever (10) is rigidly connectable to the shaft (8) and forming an angle thereto. The lever (10) has a stop face (11) arranged at a distance from the connection between the lever (10) and the shaft (8) such that the stop face (11) is arranged to move along an arc shaped path when the flap (7) pivots about said shaft (8). The arrangement (1) further comprises a stopper (12) having a slot (14) having an open end (16) and a longitudinal extension along a center line (CL) of the slot (14). The stopper has a first deformation zone (19) along a first side of the slot and a second deformation zone (20) along a second side of the slot, opposite the first side of the slot. The slot (14) is arranged to receive the stop face (11) and allow the stop face (11) to move in the slot (14) in the longitudinal extension thereof while engaging said first and second deformation zones (19, 20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.