US 12,078,265 B2
Vent with relief valve
Jacob Sanders, Burnsville, MN (US); Michael J. Hebert, St. Paul, MN (US); Daniel Dotzler, Webster, MN (US); and Koen Gatz, Hasselt (BE)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Filed by Donaldson Company, Inc., Bloomington, MN (US)
Filed on May 18, 2023, as Appl. No. 18/199,010.
Application 18/199,010 is a continuation of application No. 17/359,147, filed on Jun. 25, 2021, granted, now 11,692,644.
Application 17/359,147 is a continuation of application No. 16/497,596, granted, now 11,047,508, issued on Jun. 29, 2021, previously published as PCT/US2018/025346, filed on Mar. 30, 2018.
Claims priority of provisional application 62/478,872, filed on Mar. 30, 2017.
Prior Publication US 2023/0287991 A1, Sep. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16K 47/08 (2006.01); F16K 15/14 (2006.01); F16K 24/04 (2006.01)
CPC F16K 47/08 (2013.01) [F16K 15/148 (2013.01); F16K 24/04 (2013.01); Y10T 137/7849 (2015.04); Y10T 137/86332 (2015.04)] 20 Claims
OG exemplary drawing
 
1. A vent assembly comprising:
a housing defining a cavity, a first end, a second end, a vent opening, a valve opening, and a coupling structure towards the second end;
a passive airflow vent disposed in the housing across the vent opening, wherein the housing defines a housing opening between an ambient environment and the cavity to define a first fluid flow pathway between the ambient environment and the passive airflow vent, and the first fluid flow pathway is towards the first end; and
a one-way relief valve disposed in the housing and forming a seal over the valve opening wherein the one-way relief valve is configured to relieve pressure from the second end towards the first end,
wherein the one-way relief valve is arranged in parallel with the passive airflow vent with respect to airflow through the housing, wherein the passive airflow vent and the one-way relief valve share a central axis, and wherein the valve opening comprises a plurality of openings defining a segmented annulus about the central axis, and
wherein the fluid flow pathway defines a tortuous path between the housing opening and the one-way relief valve.