Patent · US Active

Tank venting filter having a constriction in the air inlet area

US9539895B2 · kind B2 · utility

1Cited by

8References

11Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Marcel Holzwarth · Fayetteville, US
Daniel Schmid · Sachsenheim, DE
Florian Keller · Ludwigsburg, DE

Key dates

Filing date	Nov 19, 2014
Grant date	Jan 10, 2017
Priority date	—
Expiry date	Feb 16, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60K2015/03542
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A tank venting filter is provided with a housing defining a longitudinal filter axis that is vertically oriented in operation. The housing has a top end and a bottom end and is provided with an air inlet at the bottom end and with an air outlet at the top end. The air outlet is connectable to a tank. The housing is provided with a constriction above the air inlet. A filter element is disposed in the housing and fluidically arranged between the air inlet and the air outlet. The filter element is provided with a first filter. The constriction has an opening cross-section surface area that is less than 40% of an opening cross-section surface area of the air inlet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.