Patent ID: 8919571
Filing Date: 2014-12-30
Classification: B01D,Y10T

Abstract:
1. A vacuum filter device comprising; a. a filter body having a lower and a top holder disposed from one another, each of the holders adapted to receive respective first and second fluid containers, each container having an open end and a closed end, the open end of the first container being attached to the top holder and the second container being attached to the skirt of the lower holder, each of the open ends being attached to the respective holder in a liquid and air tight manner; b. each of the holders including a container sealing element for creating a liquid and air tight seal when said containers are coupled to said filter body, each of said containers forming liquid tight receptacles when coupled to said filter body; c. the lower holder is hollow, the lower holder having a sidewall with an inner surface, upper and lower axially spaced ends, the upper end being open, the lower end comprising a bottom wall and a skirt extending downwardly beyond the bottom wall, the bottom wall having an upper inner surface and a lower outer surface and a fluid flow port located in the bottom wall from the inner surface of the bottom wall to the outer surface of the bottom wall, the lower holder containing a filter, a sealing element and a compression element, the filter being compressively sealed with the upper inner surface of the bottom wall of the lower holder by the sealing element which is in contact with an upper surface of the filter and the compression element which has a bottom surface in contact with an upper surface of the sealing element, the compression element having a top surface, a bottom surface and a sidewall between the top surface and the bottom surface, the compression element having a diameter substantially equal to that of a diameter of the inner surface of the sidewall of the lower holder, the top holder being mounted over the compressive element within the lower holder and bonded to the inner surface of the sidewall of the lower holder so as keep the compressive element in contact with the sealing element and the sealing element in contact with the filter such that all fluid entering the container below the lower holder must do so by having passed through, rather than around, the filter, the top holder having an open top and at least a partially open bottom; d. 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 e. 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.