A filter cartridge of a filter group of a fluid of a vehicle extending along a main axis has a base assembly and engagement members, including first engagement members in the filter cartridge and second engagement members in the base assembly, shaped to block each other. The filter cartridge extends along a cartridge axis and includes an engagement plane on which the first engagement members are made having tooth elements diametrically opposite the cartridge axis. Each tooth element extends from the engagement plane parallel to the cartridge axis, having a stalk and a head. In the blocking configuration, the second engagement members engage the head. Each tooth element is radially elastically yielding, so the blocking configuration is achievable following radial movement of the tooth element. The first engagement members include for each tooth element a command device extending radially. Radial movement of the tooth element actuates the command device.

An electric kettle includes: a body unit having a liquid container and a heating part; a lid unit configured to seal the liquid container via a sealing member; a spout; a liquid passage; an opening/closing valve; and a filter part. The liquid passage is configured such that an inside of the liquid container communicates with the spout via the lid unit. The opening/closing valve is configured to separate from the lid unit by being moved downward, thereby providing communication between the liquid container and the liquid passage, and to abut on the lid unit by being moved upward, thereby blocking the communication between the liquid container and the liquid passage. The filter part is provided in the liquid passage.

An electric kettle includes: a body unit having a liquid container and a heating part; a lid unit configured to seal the liquid container via a sealing member; a spout; a liquid passage; an opening/closing valve; and a filter part. The liquid passage is configured such that an inside of the liquid container communicates with the spout via the lid unit. The opening/closing valve is configured to separate from the lid unit by being moved downward, thereby providing communication between the liquid container and the liquid passage, and to abut on the lid unit by being moved upward, thereby blocking the communication between the liquid container and the liquid passage. The filter part is provided in the liquid passage.

An immersion bioreactor device may include a vessel coupler, a first vessel, and a second vessel. The first vessel may include a first cavity and a first vessel aperture in fluid communication with the first cavity. The second vessel may include a second cavity and a second vessel aperture that may be in fluid communication with the second cavity. The vessel coupler may be configured to be removably coupled to the first and second vessels so that the first and second vessel apertures are in fluid communication with the vessel coupler. The vessel coupler may include a plate which may separate the vessel apertures from each other. One or more coupler apertures may be disposed in the plate, and the coupler apertures may enable fluid communication between the vessel apertures. Optionally, an adjustable vane disc may govern the fluid communication provided by the coupler apertures.

An immersion bioreactor device may include a vessel coupler, a first vessel, and a second vessel. The first vessel may include a first cavity and a first vessel aperture in fluid communication with the first cavity. The second vessel may include a second cavity and a second vessel aperture that may be in fluid communication with the second cavity. The vessel coupler may be configured to be removably coupled to the first and second vessels so that the first and second vessel apertures are in fluid communication with the vessel coupler. The vessel coupler may include a plate which may separate the vessel apertures from each other. One or more coupler apertures may be disposed in the plate, and the coupler apertures may enable fluid communication between the vessel apertures. Optionally, an adjustable vane disc may govern the fluid communication provided by the coupler apertures.

The filter element includes a filter medium having an axis and forming a channel extending substantially axially, a first and a second end plate, each end plate covering one axial end of the filter medium and being sealingly mounted on the axial end whereby a liquid to be filtered can flow through the filter medium towards the channel and out of the filter element through an opening in fluid communication with the channel, or reversely. The filter element includes a protrusion fixedly secured to the first end plate and extending outwardly from the first end plate, the protrusion being substantially tubular and having a through hole in fluid communication with the first end plate opening, the protrusion forming a female coupling piece of a male-female connector, and a locking member capable of releasably locking a male coupling piece of the male-female connector in the female coupling piece.

The filter element includes a filter medium having an axis and forming a channel extending substantially axially, a first and a second end plate, each end plate covering one axial end of the filter medium and being sealingly mounted on the axial end whereby a liquid to be filtered can flow through the filter medium towards the channel and out of the filter element through an opening in fluid communication with the channel, or reversely. The filter element includes a protrusion fixedly secured to the first end plate and extending outwardly from the first end plate, the protrusion being substantially tubular and having a through hole in fluid communication with the first end plate opening, the protrusion forming a female coupling piece of a male-female connector, and a locking member capable of releasably locking a male coupling piece of the male-female connector in the female coupling piece.

A drain protector includes a basket and a wiper. The basket includes a basket body having first water openings. The basket body includes a seal at an upper first end and a retention member at a lower second end. The basket body is sized to be received in an associated drain, the seal for directly sealingly engaging an outer surface of the associated drain, and the retention member for directly engaging an inner surface of the associated drain. The wiper includes a wiper body having second water openings. The wiper body is removably mounted within the basket body for entrapping debris within water and removing the debris from within the basket body.

A drain protector includes a basket and a wiper. The basket includes a basket body having first water openings. The basket body includes a seal at an upper first end and a retention member at a lower second end. The basket body is sized to be received in an associated drain, the seal for directly sealingly engaging an outer surface of the associated drain, and the retention member for directly engaging an inner surface of the associated drain. The wiper includes a wiper body having second water openings. The wiper body is removably mounted within the basket body for entrapping debris within water and removing the debris from within the basket body.

A water surface garbage salvaging device, comprising a demihull, a large garbage salvaging device and a small garbage cleaning device; wherein the large garbage salvaging device is arranged on a front portion of the demihull, and the small garbage cleaning device is arranged on a rear portion thereof; the large garbage salvaging device comprises a paddle wheel, slipways and a large garbage storage bin; and the small garbage cleaning device comprises a filter mesh, a guide rail slider mechanism, a lifting mechanism and a pulley system, a hanging bracket is arranged above the filter mesh.