Patent ID: 7243639
Filing Date: 2007-07-17
Classification: B60K,F16K,Y10T

Abstract:
1. A valve for a fuel tank, comprising: an upper chamber communicating with a ventilation channel, a lower chamber to be disposed inside the fuel tank, a communicating part for communicating the upper chamber with the lower chamber, and a float body disposed inside the lower chamber with irregular gaps in between in a circumferential direction, said float body floating from a lower position to an upper position to block the communicating part from a side of the lower chamber when fuel flows into the lower chamber, wherein said lower chamber comprises an inner surface, and a plurality of support ribs protruding inwardly from the inner surface and extending along a moving direction of the float body to form flow channels for flowing gas therethrough between the inner surface of the lower chamber and an outer surface of the float body and between the ribs when the float body is situated at the lower position, protruding lengths of the ribs protruding inwardly from the inner surface of the lower chamber and situated adjacent to each other being different to form irregular gaps between the ribs, at least one large gap in the gaps forming a main flow channel.