US 12,264,061 B2
Backup valve for closed transfer coupler
Ben Freeston, Littleport (GB)
Assigned to Pentair Flow Technologies, LLC, Delavan, WI (US)
Filed by Pentair Flow Technologies, LLC, Delavan, WI (US)
Filed on Jun. 9, 2021, as Appl. No. 17/303,856.
Claims priority of provisional application 62/705,066, filed on Jun. 9, 2020.
Prior Publication US 2021/0380396 A1, Dec. 9, 2021
Int. Cl. B67D 3/00 (2006.01); B67D 7/02 (2010.01); F16K 1/12 (2006.01); G05D 7/01 (2006.01)
CPC B67D 3/0058 (2013.01) [B67D 3/0035 (2013.01); B67D 3/009 (2013.01); B67D 7/0277 (2013.01); B67D 7/0294 (2013.01); F16K 1/126 (2013.01); G05D 7/012 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A probe assembly for a closed transfer system, the probe assembly comprising:
a base including a base air inlet, a base rinse inlet, and an internal wall;
a probe having a base end and a probe end, a probe tip positioned at the probe end, the probe defining a hollow air channel extending from the base end to the probe end, the base end being coupled to the base such that the hollow air channel is in fluid communication with the base air inlet and the probe tip;
at least one primary valve positioned at the probe tip; and
at least one secondary valve positioned proximate the base air inlet, wherein
the internal wall
partially defines the base rinse inlet, and
separates the base rinse inlet from the base air inlet.