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US 5,858,232 AGranted
Filter cartridges with sealing means
OwnerChristopher A. Meissnerinventor
Life of this patent
Estimating the term…
Abstract
A filter cartridge for purifying fluids such as water and chemicals is provided with sealing rings integrally formed with and extending circumferentially from a tube connected to the housing of the filter cartridge and intended to be inserted into a receptacle for providing or receiving fluids. The rings are elastic and compress when the filter cartridge is inserted into the receptacle, thereby providing a seal between the filter cartridge and the receptacle.
Claims15
A filter cartridge for filtering fluid comprising:
- a housing containing filter material and having an opening to permit egress or ingress of fluid,
- a tube having walls defining a passage between first and second ends, the tube including the first end being adapted to be contained in a receptacle for providing or receiving fluid and the second end of the tube operatively communicating with the opening, and
- a compressible ring integrally formed with and extending outwardly and circumferentially from the tube for elastically contacting the receptacle to prevent flow of fluid between the ring and the receptacle, the ring being angled away from the first end of the tube.
A filter assembly comprising:
- a filter shell having a cartridge receiving cavity;
- a replaceable filter cartridge disposed in the cavity;
- a fluid coupling tube at one end of the cartridge;
- a compressible sealing ring formed in a one piece construction with the tube;
- a cup in the cavity into which the tube fits such that the sealing ring is deformed inwardly to form a seal between the tube and the cup;
- a fluid inlet port;
- a fluid outlet port;
- means for coupling one of the ports to the interior of the cup on one side of the sealing ring;
- and
- means for coupling the other port to the cavity outside the cup on the other side of the sealing ring such that fluid flows from the inlet port through the cartridge and the tube to the outlet port.
7 more elements
Dependencies are inferred from the claim text.