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In-tank fuel filter
Abstracts of Recent Patents /R the UK British Patent specifications can be ordyed horn:,
nate, quartz, corundum and clay. fnventors: N. Nagai, S. Wada, Y. Murano, S. Ikeda, K. Watanabe, S. Matsueda and M. Ogawa, Date of publication: 5 February 1997. In-tank
Exhaust
gas filter
In GB 2302026 Matsushita Electric Industrial Co Ltd describes an exhaust gas filter for treating exhaust gas from a diesel engine. By suitable control of the physical properties of the exhaust gas filter, such as the thermal expansion coefficient, the durability of the filter can be enhanced. When one of the constituent materials for the filter Includes aluminium titanate as a primary component. the durability can be further enhanced. The filter is preferably an extruded, honeycomb member made mainly from aluminium titanate, and with IO-60 parts by weight of pore-forming material per 100 parts of aluminium titanate The aluminium htanate particle size should be 3- 25 pm, the pore-forming material size 20-61 jim, with binder, plasticiser and water added to form the mixture. After calcining, the pore size of the material is preferably 8-42 /Lrn with a porosity between 29% and 63%. The pore-forming material can be activated carbon. coke: synthetic resins, starch or graphite. It is preferable that the coefficient of thermal expansion is less than or equal to 2.8 x IO6 per degC (preferably, 0.1 to 0.8). The honeycomb has alternate cells closed at opposite ends. The closure material can be the same, or a ceramic such as cordierite. SiO,, FeaO,, AleO,, TiOa, MgO or CaO can be added as strengthening agents. Instead of extruding, the filter can be formed from corrugated sheets by a paper-making process. Also described are filters made from ceramics such as cordierite, mullite, spodumene, eucryptite, potassium tita-
fuel
filter
In GE 2303081 Kuss Corporation describes an intank fuel filter assembly, which has a filter body with an outlet for connection to a fuel pump. This pump is provided with a retaining ring around the outlet, which is adapted to receive and grip a lug on the pump body. The ring is supported on a lateral extension of the outlet, and is provided with a number of resilient fingerlike members extending into an aperture, and arranged in a non-circular (oval or elongate) pattern for gripping the lug. This arrangement ailows for manufacturing tolerances in the lug position, and dimensional changes in the outlet caused by contact with fuel. Protrusions engage corresponding holes in the ring and retain it in position. The ring and finger-bearing parts may be integral or separate. fnvenfors: E.J. Fitzpatrick, M.J. Davidson and B.R. Smith, Date of pubficafion: 12 february 1997. Aggregation suspended
of particles in liquid
In GB 2303083 Thames Water Utilities Ltd describes an apparatus for aggregation of particles suspended in a liquid, such as sewage. It comprises a mass of buoyant, discrete flocculating means, such as polypropylene spheres, held between two pervious sheets between the liquid inlet and outlet, and positioned in the downward flow path of the liquid by impervious sidewalls. The flocculating means may be periodically cleaned by bursts of air. The apparatus may be positioned within a settling tank. Inventor: P.D.A. Pearce, Date of publication: 12 February 1997. Rotating
drum
suction
filter
In GB 2302818 M.J. Vials describes a rotating drum filter which includes a replaceable filter medium
wrapped and seaied about the circumference and partially submerged in dirty liquid. The filter supply suction pipe passes through otherwise solid endwalls via integral openings to the clean liquid within the drum. These openings also form the journal on which the drum rotates. Drawing off the filtered liquid increases the flow through the filter. Part of the filtered flow is returned under pressure to backflush the media. Additionally, and where only part of the total flow is required to be filtered. the assembly can be arranged to filter less than the total flow rate. The excess is bypassed over weirs and then returned to the main volume. Date of pubficafion: 5 February 1997. Dynamic
filter
system
In GB 2302620 Pall Corporation describes a dynamic filter system which comprises an assembly including one or more filter elements and one or more members fitted within a housing. The filter elements and members are interleaved. and arranged to rotate with respect to one another. Inventors: J.D. Miller, T.J. Fendya, J.E. Ryan Jr, H. Randhahn and H. Vogelmann, Date of publication: 5 February 1997. Filter
with electronically readable label
In GE 2303082 Pall Corporation describes a filter with electronically readable label, which includes a filter cartridge and a memory device containing electronically readable information. This may be information regarding the static condition of the filter, such as ifs rating and size, or may be dynamic information received from a sensor, such as the ambient pressure and temperature, or the degree of blockage of the filter. The information is readable by an external reader via, for example, either a transmitter or an output connection. Inventors: R.E. Page and G.B. Peacock, Date of pubiication: 12 February 1997. Centrifugal
solids
In GB 2303320
separator R.E.C.
Eady
describes a method end apparatus for centrifugal solids separahon for use in the drilling industry. The invention is particularly concerned with the conservation of drilling mud. The apparatus comprises a rotatable container, some means for inputting used mud to the container (preferably with minimal turbufence), some means of collecting separated soiids material, a way of wipfng separated solids material from the sides of the container (preferably directing this material to the collector), and an output from the container for cleaned mud. So that the apparatus may be employed for continuous mud cleaning or solids separation, the collector may be isolated from the container, to a/low dumping of collected solids material. Where there are multiple collectors, there may be a synchronised cycle of dumping of collection, to maintain the balance of the container during continuing centrifugal rotation. Date of publication: 19 February 1997. Tracheosfoma
filter
assembly
in GB 2303553 Kapitex Healthcare Ltd describes a filter assembly which comprises a housing and a filter component movable within the housing in response to breathing. The housing includes a base plate with upstanding flanges and an upstanding ring to engage the filter, and a cap with a lateral flange and a hole. The filter comprises one or more layers of filter fabric, such as carbon-impregnated polyesters, and a supporting frame with an upstanding ring with a tateral flange extending from it. When the user inhales, the filter is drawn inwards. On exhalation, the filter is forced outwards and air passes through leak channels. Friction between the two rings ensures that the inhaiation position of the filter is controlled by the pressure differential aoross the filter !ayers. Inventor: R.J. Maxwell Smith, Date of publication: 26 February 1997.
nate, quartz, corundum and clay. fnventors: N. Nagai, S. Wada, Y. Murano, S. Ikeda, K. Watanabe, S. Matsueda and M. Ogawa, Date of publication: 5 February 1997. In-tank
Exhaust
gas filter
In GB 2302026 Matsushita Electric Industrial Co Ltd describes an exhaust gas filter for treating exhaust gas from a diesel engine. By suitable control of the physical properties of the exhaust gas filter, such as the thermal expansion coefficient, the durability of the filter can be enhanced. When one of the constituent materials for the filter Includes aluminium titanate as a primary component. the durability can be further enhanced. The filter is preferably an extruded, honeycomb member made mainly from aluminium titanate, and with IO-60 parts by weight of pore-forming material per 100 parts of aluminium titanate The aluminium htanate particle size should be 3- 25 pm, the pore-forming material size 20-61 jim, with binder, plasticiser and water added to form the mixture. After calcining, the pore size of the material is preferably 8-42 /Lrn with a porosity between 29% and 63%. The pore-forming material can be activated carbon. coke: synthetic resins, starch or graphite. It is preferable that the coefficient of thermal expansion is less than or equal to 2.8 x IO6 per degC (preferably, 0.1 to 0.8). The honeycomb has alternate cells closed at opposite ends. The closure material can be the same, or a ceramic such as cordierite. SiO,, FeaO,, AleO,, TiOa, MgO or CaO can be added as strengthening agents. Instead of extruding, the filter can be formed from corrugated sheets by a paper-making process. Also described are filters made from ceramics such as cordierite, mullite, spodumene, eucryptite, potassium tita-
fuel
filter
In GE 2303081 Kuss Corporation describes an intank fuel filter assembly, which has a filter body with an outlet for connection to a fuel pump. This pump is provided with a retaining ring around the outlet, which is adapted to receive and grip a lug on the pump body. The ring is supported on a lateral extension of the outlet, and is provided with a number of resilient fingerlike members extending into an aperture, and arranged in a non-circular (oval or elongate) pattern for gripping the lug. This arrangement ailows for manufacturing tolerances in the lug position, and dimensional changes in the outlet caused by contact with fuel. Protrusions engage corresponding holes in the ring and retain it in position. The ring and finger-bearing parts may be integral or separate. fnvenfors: E.J. Fitzpatrick, M.J. Davidson and B.R. Smith, Date of pubficafion: 12 february 1997. Aggregation suspended
of particles in liquid
In GB 2303083 Thames Water Utilities Ltd describes an apparatus for aggregation of particles suspended in a liquid, such as sewage. It comprises a mass of buoyant, discrete flocculating means, such as polypropylene spheres, held between two pervious sheets between the liquid inlet and outlet, and positioned in the downward flow path of the liquid by impervious sidewalls. The flocculating means may be periodically cleaned by bursts of air. The apparatus may be positioned within a settling tank. Inventor: P.D.A. Pearce, Date of publication: 12 February 1997. Rotating
drum
suction
filter
In GB 2302818 M.J. Vials describes a rotating drum filter which includes a replaceable filter medium
wrapped and seaied about the circumference and partially submerged in dirty liquid. The filter supply suction pipe passes through otherwise solid endwalls via integral openings to the clean liquid within the drum. These openings also form the journal on which the drum rotates. Drawing off the filtered liquid increases the flow through the filter. Part of the filtered flow is returned under pressure to backflush the media. Additionally, and where only part of the total flow is required to be filtered. the assembly can be arranged to filter less than the total flow rate. The excess is bypassed over weirs and then returned to the main volume. Date of pubficafion: 5 February 1997. Dynamic
filter
system
In GB 2302620 Pall Corporation describes a dynamic filter system which comprises an assembly including one or more filter elements and one or more members fitted within a housing. The filter elements and members are interleaved. and arranged to rotate with respect to one another. Inventors: J.D. Miller, T.J. Fendya, J.E. Ryan Jr, H. Randhahn and H. Vogelmann, Date of publication: 5 February 1997. Filter
with electronically readable label
In GE 2303082 Pall Corporation describes a filter with electronically readable label, which includes a filter cartridge and a memory device containing electronically readable information. This may be information regarding the static condition of the filter, such as ifs rating and size, or may be dynamic information received from a sensor, such as the ambient pressure and temperature, or the degree of blockage of the filter. The information is readable by an external reader via, for example, either a transmitter or an output connection. Inventors: R.E. Page and G.B. Peacock, Date of pubiication: 12 February 1997. Centrifugal
solids
In GB 2303320
separator R.E.C.
Eady
describes a method end apparatus for centrifugal solids separahon for use in the drilling industry. The invention is particularly concerned with the conservation of drilling mud. The apparatus comprises a rotatable container, some means for inputting used mud to the container (preferably with minimal turbufence), some means of collecting separated soiids material, a way of wipfng separated solids material from the sides of the container (preferably directing this material to the collector), and an output from the container for cleaned mud. So that the apparatus may be employed for continuous mud cleaning or solids separation, the collector may be isolated from the container, to a/low dumping of collected solids material. Where there are multiple collectors, there may be a synchronised cycle of dumping of collection, to maintain the balance of the container during continuing centrifugal rotation. Date of publication: 19 February 1997. Tracheosfoma
filter
assembly
in GB 2303553 Kapitex Healthcare Ltd describes a filter assembly which comprises a housing and a filter component movable within the housing in response to breathing. The housing includes a base plate with upstanding flanges and an upstanding ring to engage the filter, and a cap with a lateral flange and a hole. The filter comprises one or more layers of filter fabric, such as carbon-impregnated polyesters, and a supporting frame with an upstanding ring with a tateral flange extending from it. When the user inhales, the filter is drawn inwards. On exhalation, the filter is forced outwards and air passes through leak channels. Friction between the two rings ensures that the inhaiation position of the filter is controlled by the pressure differential aoross the filter !ayers. Inventor: R.J. Maxwell Smith, Date of publication: 26 February 1997.