US 11,959,475 B2
Capacitive liquid leak detection device
Pooya Mahmoudian, Glendale, CA (US); and Richard Gillberg, Jr., Encinitas, CA (US)
Assigned to HASKEL INTERNATIONAL, LLC, Burbank, CA (US)
Filed by HASKEL INTERNATIONAL, LLC, Burbank, CA (US)
Filed on Nov. 29, 2022, as Appl. No. 18/070,757.
Application 18/070,757 is a division of application No. 16/283,134, filed on Feb. 22, 2019, granted, now 11,555,487.
Prior Publication US 2023/0093139 A1, Mar. 23, 2023
Int. Cl. F04B 53/16 (2006.01); F04B 1/0443 (2020.01); F04B 49/06 (2006.01); G01M 3/16 (2006.01)
CPC F04B 53/162 (2013.01) [F04B 1/0443 (2013.01); F04B 49/065 (2013.01); F04B 53/16 (2013.01); G01M 3/16 (2013.01); F04B 2201/0803 (2013.01); F04B 2207/70 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting a leaked drive fluid in a pump comprising:
collecting, in a leak detector positioned in or on a seal adaptor, drive fluid leaked from a drive of the pump, wherein the seal adaptor connects a pump cylinder to a drive housing that includes the drive, and a channel extends from the leak detector through the seal adaptor and is separate from a pump chamber defined by the pump cylinder, so that the channel is configured to direct the leaked drive fluid that is leaking from the drive adjacent the seal adaptor toward the leak detector and prevent the leaked drive fluid from entering the pump chamber defined by the pump cylinder;
defining a maximum level of the leaked drive fluid in the leak detector;
sensing when the leaked drive fluid reaches the maximum level; and
generating an alarm when the leaked drive fluid reaches the maximum level.