Patent ID: 9737856
Date: 2017-08-22
CPC Classifications: B01D,Y10T

Claim:
1. A method of forming a vacuum filter device comprising; a. providing a filter body having a lower holder and a top holder disposed from one another, each of the holders adapted to receive respective first and second fluid containers, each fluid container having an open end and a closed end, each of the holders including sealing element for creating a liquid and air tight seal when the first and second fluid containers are coupled to the filter body, each of the fluid containers forming liquid tight receptacles when coupled to said filter body, one or more filters within said filter body retained between the holders by a compression element that is formed of a sealing element and a separate compression element, the compression element having an outer surface, a top surface and a bottom surface, the compression element being within the lower holder and having a diameter substantially equal to that of a diameter of an inner sidewall of the lower holder and wherein the bottom surface of the compression element is in compressive contact with the sealing element that is in compressive contact with an upper surface of the filter, the top holder being mounted over the compressive element within the lower holder; a vacuum port extending through the filter body and being in fluid communication with the second fluid container at a downstream side of the filter, the vacuum port adapted to be connected to a vacuum source for drawing the liquid from the first fluid container through the filter and into the second fluid container; and a vent passageway in the filter body configured to permit gas in the atmosphere surrounding the vacuum filter device to be in direct fluid communication with the first fluid container on an upstream side of the filter and not to be in direct fluid communication with the second fluid container; b. compressively sealing the one or more filters within the filter body between the holders by the compression element; c. bonding the top holder to the inner sidewall of the lower holder so as keep the compressive element in compressive contact with the sealing element and the sealing element in compressive contact with the upper surface of the one or more filters so that liquid in the first fluid container must pass through the filter prior to entering the second fluid container and d. attaching the open end of the first fluid container to the top holder and the open end of the second fluid container to the lower holder, each of the open ends of the fluid containers being attached to the respective holder in a liquid and air tight manner.