×

Filter device having a pump

  • US 10,639,569 B2
  • Filed: 09/22/2016
  • Issued: 05/05/2020
  • Est. Priority Date: 09/25/2015
  • Status: Active Grant
First Claim
Patent Images

1. A filter device, comprising:

  • a filter housing;

    a filter element exchangeably accommodated in said filter housing;

    a fluid pump being in said filter housing and having first and second pump chambers;

    a pump piston being movably guided longitudinally in said first and second pump chambers in two directions of travel and separating said first and second pump chambers from one another in a fluid tight manner when stationary and in at least one of the two directions; and

    first and second valves being connected in fluid communication with said first and second pump chambers, respectively, and oppositely opening and closing upon actuation of said fluid pump, said first valve being in and part of said filter element and being movable between an open position providing fluid communication with and transfer of fluid to said first pump chamber from said filter element and a closed position blocking fluid communication with and transfer of fluid to said first pump chamber from said filter element.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×