WO1995022392A1 - Transformable, collapsible permanent use air filter frame - Google Patents

Transformable, collapsible permanent use air filter frame Download PDF

Info

Publication number
WO1995022392A1
WO1995022392A1 PCT/CA1994/000617 CA9400617W WO9522392A1 WO 1995022392 A1 WO1995022392 A1 WO 1995022392A1 CA 9400617 W CA9400617 W CA 9400617W WO 9522392 A1 WO9522392 A1 WO 9522392A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter frame
frame
carousel
struts
filter
Prior art date
Application number
PCT/CA1994/000617
Other languages
French (fr)
Inventor
Ano Leo
Original Assignee
Ano Leo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25743552&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1995022392(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ano Leo filed Critical Ano Leo
Priority to AU81021/94A priority Critical patent/AU8102194A/en
Publication of WO1995022392A1 publication Critical patent/WO1995022392A1/en
Priority to US08/563,974 priority patent/US5807415A/en
Priority claimed from US08/563,974 external-priority patent/US5807415A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened

Definitions

  • the currently used filter media on the market are composed of oil-treated paper fibre or the like, relying on an accordion-fold design to maximize filtration surface area but lacks depth or volume filtering.
  • Conventional air filter manufactt rs attempt to create more surface area by having more folds, thus making many outward and inward small angles. Air w dynamics on this design limit consistent and even dirt particle entrapment at the acutely folded angles. Airflow is highly restricted through the acutely tensed angles, thereby inward angles accumulate more dirt This imbalance of dirt entrapment inhibits air flow and creates a further negative effect by restricting even air flow.
  • the conventional filter is a compromise in design between filtering fine dust particles and permitting the required air flow to the engine.
  • the conventional filters' inadequacy is due to its characteristic flawed design. This flawed design, limits the filtering medium the conventional filter can support and limits the capacity of air its filtering medium can adequately clean.
  • Newly purchased conventional filters colle large particles of dust but permit finer dust to pass thr ugh the filter media betwee.i the folds. Accumulated dust particles diminish air flow efficiency and an improper air/fuel burning ratio develops simultaneously. Engine oil contamination which commences immediately from the unfiltered small dust particles damages the tightly fit moving component parts of the engine.
  • a filter frame is a separate component from the filtering media and the frame facilitates changing of the filtering media with ease.
  • the invention's major advantage over conventional air filters is to provide flexibility to adopt the best possible filtering media available on the market now and in the future.
  • the invention permits the body of the filter to be adjusted in width, height, length and to form various shapes. Replacement filtering medium for usage on various models of internal combustion engines can be utilized with the invention frame.
  • the shapes of the conventional intake air filters currently on the market are in great variations of sizes and forms. It's not an inexpensive or easy task for a manufacturer to have the number of molds in stock to produce the many required sizes and shapes of conventional filters that are required.
  • One of the materials that we have chosen to be the filtering medium to enhance the invention for the present, is a heat resistant polyurethane foam strip that can be wrapped around the invention. It can be tailored machine-cut into various shapes and
  • the filter medium can be taken off for cleaning, re-use and/or replacement.
  • This type of foam medium has been proven to be reusable many times when used in accordance with instructions.
  • the composition of the foam is a honeycombed network of thousands of tiny inter-locking open cells. When thoroughly wetted with a sticky agent, the filter media is in its most effective stage for air cleaning and dirt entrapment The air when entering the foam media, bounces around from cell to cell. The air flows through the medium but the dirt remains entrapped in the network of honeycomb cells and stuck therein by the sticky agent on the cell walls.
  • the foam medium has depth and cubic filtering volume which can efficiently entrap more dirt than conventional filter medias.
  • foam medium when enhanced with sticky agent has a longer, steadier and more effective filtering capacity and usage time before it must be washed and made ready for reuse.
  • the general objective of the invention is to provide an ecologically sound intake air filter frame for internal combustion engines.
  • a non-throw away permanent use filter frame enabling an ecological friendly and economical alternative to the conventional filter.
  • various reusable filtering media which are available now and in the future can be utilized.
  • an intake air filter frame can be made of various grades of plastic, metal or wood and is designed for use on internal combustion engines.
  • the invention, the filter frame assembly has great flexibility as it is collapsible, reformable and can be folded. It is shipped flat to the consumer who can assemble it easily by snapping the parts together.
  • the invention can be expanded lengthwise, widthwise and depthwise with its adjustable support members (struts) and its adjustable frame ends. Ultimately The invention, the filter frame can be transformed into many shapes. Great versatility
  • RECTIFIED SHEET (RULE 91) ISA/EP is achieved by it being capable of fitting many filtering sizes and applications on internal combustion engines.
  • the invention is economical to manufacture, it is more efficient than conventional filters through its adaptability to use various filter media but most importantly it is a durable and ecological product because it is a non-throw-away permanent use filter frame.
  • Fig. 1 is a schematic representation of the invention formed in a carousel shape with polyurethane foam filter medium added to cover the configuration.
  • the carousel shape can be described as having two distinct parts, a shield shaped roof and a circular shape having perpendicular walls.
  • Fig. 1A showing the tubular shape adjustable supporting strut 2 forming the roof of the carousel.
  • Fig. IB shows the sectional view of the spliced adjustable supporting strut 4 forming the wall of the carousel filter frame.
  • Fig. 1C shows the securing sleeve 4A of the spliced supporting strut shown in Fig. IB.
  • Fig. ID shows the plan view of the small top centre ring 1 of the carousel roof
  • Fig. IE shows the sectional-view of the small top centre ring 1 shown in Fig. ID.
  • Fig. IF showing a complete configuration of the carousel filter frame covered with filtering medium.
  • Fig. 1G shows the plan view of upper ring 3 and lower ring 6 inter-snapped on one within the others.
  • Fig. IH shows the sectional view of rings in Fig. 1G and displays how varioue sizes of ring tightly fitted together ring within a ring.
  • Fig. II shows the arc shape strut 4E and Fig. 1J shows the streight shape both are fixed length struts serve the same function as the supporting struts 4 displayed in Fig. IB and Fig. IF forming the carousel wall.
  • Fig. 2 is a schematic representation of the invention from Fig. 1 transformed into an elongated carousel shape with the same shield shape roof made by extending the length of the adjustable perpendicular struts 4, or replace them with a set of longer adjustable struts as required.
  • Fig. 3 is a schematic view of the invention shown from Fig. 2 being seperated into two different configurations, Fig. 3A displayed the top shield roof structure become a shield shape filter frame configuration by itself and Fig. 3B transformed into a cylindrical shape filter body.
  • FIG. 4 is a schematic transformation of the invention from Fig. 3B.
  • a collapsible cylindrical shape air filter frame to be transformed into a collapsible cone shape configuration shown in Fig. 4C by replacing with the non-adjustable length strut 4G in Fig. 4A or the spliced adjustable strut 4 in Fig. 4B and as well as replacing with a larger bottom ring 6.
  • Fig. 4D shows the plan veiw of various sizes of rings snapped together ring within ring and Fig. 4E shows the sectional view of Fig. 4D.
  • Fig. 5 is a schematic division of the invention from Fig. 1, by separating the carousel shape configuration into two separated shapes.
  • Fig. 5 A a shield shape and
  • Fig. 5B a circular :- .ape.
  • Fig. 6 is a schematic formation of the invention in Fig. 1 being transformed by spliting the 2 rings, upper ring 3 and lower ring 6 into halves adding 4 adjustable struts 4 from a carousel shape into a oval shape with roof which can be compared to a circus-tent shape and forms a complete air intake filter when covered with foam filtering medium.
  • Fig. 7 is a schematic division of Fig. 6 by separating the oval-circus-tent shape into two parts, two distinct oval shape filter frames are created.
  • the first filter frame in Fig. 7 A is the top which becomes a oval shield in shape.
  • the second figure shown in Fig. 7B appears as a oval shape in the form that can be described as a (race track) shaped configuration. Both separated portions of the oval circus tent shape when covered with foam filtering medium are each complete air intake filters.
  • Fig. 8 is a schematic representation of the invention showing the transformation of the filter shape from a race-track configuration in Fig. 7B into a square shape.
  • Fig. 8 A shows the 90 degree corner frame 5.
  • Fig. 8B shows the retainer pin 10 for securing the tubular shape adjustable strut 2 and the 90 degree corner frame.
  • Fig. 8C shows the non-adjustable supporting strut 4F.
  • Fig. 8D shows the completed view of a assembled square filter frame covered with medium.
  • Fig. 8E shows the tubular shape adjustable supporting strut 2 with round ends 2D.
  • Fig. 8F shows the centre piece 7 for connecting and securing one end of the four adjustable struts.
  • Fig. 8G shows the spliced adjustable strut 4 forming the side of the square frame and
  • Fig. 8H shows the sleeve 4A for securing the two spliced pieces in position in Fig. 8G.
  • Fig. 9 is a schematic view showing the transformation from a square shape shown in Fig. 8 into a rectangular shape and displays all the components that were used.
  • Fig. 9A shows the 90 degree corner frame 5.
  • Fig. 9B shows the non-adjustable supporting strut 4F.
  • Fig. 9C shows the completed view of a assembled rectangular filter frame cover with medium.
  • Fig. 9D shows the tubular shape supporting strut 2 used as a centre piece with both hook ends 2C.
  • Fig. 9E shows the tubular shape strut 2 with two round ends 2D connecting with the eyelet 5A shows in Fig. 9A.
  • Fig. 9F shows the adjustable spliced strut with a sleeve on.
  • Fig. 9 G shows the sleeve for the spliced strut in Fig. 9F.
  • Fig. 10 shows all the components of the invention: Fig. 10A shows the 90 degree corner frame 5 forming the square and rectangular frame. Fig. 10B shows the retainer pin 10 for securing the 90 degree corner frame and tubular shape strut Fig. 10C shows the short version adjustable spliced strut 4 with sleeve for forming the supporting frame of the invention. Fig. 10D is the securing sleeve for the strut in Fig. 10C and Fig. 10E shows the long version of the adjustable spliced strut Fig. 10F is the securing sleeve for the spliced strut in Fig. 10E. Fig. 10G shows the centre piece 7 for the square frame in Fig.
  • Fig. 10H shows the plan view of the small top centre ring 1 for shield shape configuration of the invention.
  • Fig. 101 shows the plan view of the upper ring 3 and lower ring 6 in various sizes snapped together ring within ring.
  • Fig. 10J shows the sectional view of the upper and lower rings in Fig. 101.
  • Fig. 10K shows the tubular shape adjustable strut 2 with hook end 2C and channel hitch end 2F.
  • Fig. 10L shows the tubular shape adjustable strut 2 with two round ends 2D.
  • Fig. 10M shows the non-adjustable arc edge supporting strut 4E for forming the wall of the filter frame.
  • Fig. 10H shows the plan view of the small top centre ring 1 for shield shape configuration of the invention.
  • Fig. 101 shows the plan view of the upper ring 3 and lower ring 6 in various sizes snapped together ring within ring.
  • Fig. 10J shows the sectional view of the upper and lower rings in Fig. 101.
  • ION shows the streight shape non-adjustable supporting strut 4F for forming the wall of the filter frame and also for forming the sides of the square and rectangular frame.
  • Fig. 10O is the bevel adjustable supporting strut 4G for forming the wall of the cone shape filter frame.
  • Fig. 11 is a sectional view of the invention displayed in Fig. 3 A and 5 A, a shield shaped air filter frame fully wrapped with filtering medium secured within an air filter housing.
  • Fig.12 is a sectional view of the invention displayed in Fig. IF, a carousel shaped air filter frame fully wrapped with filtering medium secured within an air filter housing.
  • FIG. 13 is a sectional view of the invention displayed in Fig. 2, a cylindrical shape air filter frame fully wrapped with filtering medium secured within an air filter housing.
  • Fig. 14 is a schematic view of a cylindrical shape of the invention shows halved, snapped-in upper and lower rings, the tall body of the frame is re-inforced by a snug fitted centre ring 11.
  • the invention is collapsible, the frames and the supporting members (struts) are expandable, and adjustable, they have great adaptability.
  • the invention when assembled, all parts can be snapped tightly together by known industrial connecting means utilizing either male or female ends.
  • a factory made tailor-fitted piece of polyurethane filtering foam or other filtering material can be wrapped neatly around the outside of the frame conforming to its shape.
  • both top and bottom perimeters are covered by xible foam over to the inside edges of the frames.
  • the foam contours to irregularities on the bottom and top of the filter frame and forms an effective resilient seal when the of the air filter housing cover of the vehicle is secured on them. Note: Intake of air must go through the filter medium before reaching the carburetor.
  • the filter frame when in the form of a carousel forms the skeleton of a complete filter body and is comprised of ; a small top ring, tubular shape supporting struts, upper ring, flat shape supporting struts and bottom ring.
  • the small top ring 1 displayed in Fig. ID & Fig. 10H is the top supporting member of the shield shape roof of the invention. It facilitates the securing of the tubular shape adjustable supporting struts and also supports a rubber sealing ring IB with a central hole 1C, this central hole is to accommodate a central shaft 9 shown in Fig. 11, 12, and 13 which is perpendicular to and rises from the carburetor.
  • the function of the small top ring 1 is to position the filter frame and the filter medium which results in even
  • RECTIFIED SHEET (RULE 91) ISA/EP distribution of the downward pressure on the radially spaced supporting struts 2 and strut 4, when the wing-nut 8 in Fig. 11 is screwed down on the shaft to the air filter housing cover.
  • the downward pressure presses on the foam medium and the rubber seal resulting an air tight resilient effect ID represents indentations spaced around the perimeter of the small top ring. These indentations are the connecting points of the hook ends of the strut 2C.
  • 1A is the connecting rest bar that the strut 2C hooked on.
  • Fig. 101 displayed various sizes of ring within other rings, two sets of ring(s) of same size can be used simultaniously as upper ring 3 and lower ring 6.
  • All the rings in the invention, except the small top ring 1 are adjustable in diameter by adapting a larger or smaller ring and are designed to be joined by two hinges or other snap-on mechanical means in the middle 3A of the rings, allowing rings to be folded or separated in half for transforming into other shapes and for added compactness or for expansibility to fit various filter diameters and for shipping.
  • AH rings may also be manufactured in one piece when required. For added versatility in accommodating a vast number of various filter sizes, all rings can be joined together in two or three to form the desired filter frame diameter.
  • each upper ring 3 or lower ring 6 has threads on the outside circumference 3B and the inside circumference 3C in Fig. 10J.
  • the threaded outside circumference of a smaller ring can be easily joined together by a larger ring with threaded inside circumference.
  • the purpose is to obtain the nearest inside diameter and/or the nearest outside diameter of a required specific air filter application at the manufacturing site from the in-stock threaded rings.
  • Alternative methods for joining the frames together but not limited to, are by screws or by other methods such as other male and female joints known in the industry.
  • the first type of the supporting strut 2 of the invention has a long thin tubular body shown in Fig. 10K & Fig. 10L. Both ends of the tubular body are threaded inside in order to receive outside threaded extension end pieces. This allows for the extension or contraction of the pieces once they are connected. There are three extension arm pieces with different fitting ends which can be secured in position by the lock nuts 2A:
  • the round end with small centre hole 2D in Fig. 8E is for use in forming the inner frame of the square frame in Fig. 8D and rectangular frame in Fig. 9D.
  • the round end 2D when connecting with a eyelet 5A positioned at the inner corner of the 90 degree rigid corner piece 5 is secured by a retainer pin 10 in Fig. 8B and Fig. 9B.
  • the connecting method utilizing a retainer pin 10 allows movement at the joint and permits flexibility for expansion and contraction of the filter frames should the outside adjustable struts be lengthened or shortened to meet the need of a longer or shorter filter frame.
  • the hook end 2C is used when connecting onto the rest bar 1A which rest bars are spaced around the outer edge of the small top ring 1.
  • the hook end 2C which rides on the rest bar is able to pivot up and down thus allowing the adjustable strut 2 which supports the foam media to form various heights.
  • the small top ring 1 is also free to move up or down on the central perpendicular shaft 9 in Figs. 11, 12, and 13 which rises from the centre of the carburetor if the adjustable struts are lengthened or shortened.
  • the channel hitch 2F is used to connect to the inside edge of the upper ring 3, positioned in the middle of the carousel shaped filter frame.
  • the channel hitch 2F by itself is connected to a round end 2D by a retainer pin 10 shown in Fig. 10B.
  • the channel hitch 2F has the flexibility to pivot 90 degrees thus enabling the adjustable struts 2 which support the foam media to form various heights.
  • the second type of the supporting struts 4 of the invention are comprised of adjustable struts and non-adjustable struts shown in Fig. 10C & Fig. 10E.
  • the adjustable strut 4 is manufactured in varying lengths but can be further extended from or retracted to its manufactured length to meet various length requirements.
  • the adjustable strut 4 is comprised of three pieces, two pieces of which are identical each
  • RECTIFIED SHEET (RULE 91) ISA/EP having a male tenon joint 4D on one end, the other ends of the two parts of the strut- have a splice joint 4B.
  • the third piece of the strut is a sleeve 4A which is capable of moving up or down the two pieces and when secured in place over the spliced joint 4B by a lock nut 4C, thus a rigid strut 4 is made.
  • the non-adjustable struts 4E in Fig. 10M & 4F in Fig. ION can be made in various desired lengths for specific applications when production volume justifies.
  • the bevel adjustable strut 4G in Fig. 10O is the supporting strut specifically for the cone shaped frame. Bevel strut 4G can be manufactured in the adjustable form or the rigid form which ever is desired by requirements.
  • Adjustable strut 4 and bevel strut 4G and non-adjustable struts 4E, and 4F are snapped into female joints in the filter frame by male joints 4D which are located at either end of said struts.
  • the male joints of these struts can be made in various joint already currently in use in the automotive parts or mechanical industry.
  • the adjustable bevel strut 4G is solely used as the supporting members for the cone shaped filter configuration in Fig. 4. All the other adjustable struts 4 and non-adjustable struts 4E, and 4F, can be adapted for usage as perpendicular supporting members in the filter frames and horizontal reinforcing members for square filter frames shown in Fig. 7 and for rectangular filter frames shown in Fig. 8.
  • the 90 degree corner frame 5 in Fig. 10A is a rigid member but can be lengthened by inserting an adjustable strut 4 or a non-adjustable strut 4F into the female connecting joints 5B.
  • the 90 degree corner frame comprises a connecting eyelet 5A and two female connecting ends 5B.
  • the separable and adaptable frame rings and their flexibility which enables the invention to be transformed from one shape into many different shapes of three dimensional forms.
  • the invention's configurations may be compared to the form of a carousel, to a shield, to a thick circular ring, to a cylinder, to a cone, to an oval figure which can be compared to the shape of a race-track, or a shape comparable to a circus tent
  • Other forms of filter frame are created when 90 degree angles are utilized with adjustable struts.
  • a square can be formed and then transformed into rectangular shapes, or any other right angled shape required for the filter frame to be used in.
  • RECTIFIED SHEET (RULE 91) ISA/EP lengthening or shortening the supporting struts, adjusting the inside and outside diameters of the supporting rings and extending the lengths of the 90 degree angles, almost any necessary filtering frame shapes used on internal combustion engines can be adapted to and achieved.
  • Example One The present invention forms one complete assembly in the form of a carousel in Fig. 1 and shown in sectional view in Fig. 12.
  • the carousel is comprised of a small top ring 1, two large circular rings; one an upper ring 3, the second bottom ring 6 and two sets of adjustable supporting struts.
  • the upper set of struts 2 are tubular and the lower set of perpendicular struts 4 are flat
  • This carousel filter frame has a roof configuration which can be compared to a shield in shape.
  • the shield shaped roof filter frame is formed by joining a small top ring 1 to the first large ring 3 by a series of adjustable struts 2 which are supporting members.
  • the struts 2 are spaced radially with one end 2C being hooked onto the rest bar 1A of the small top ring 1 and the other end of the struts, each which have a channel hitch 2F are snapped into place on the inner rim of the circular ring 3 which becomes the bottom part of the filter frame in the configuration of a shield shaped roof. Because the struts are flexible, contractile and extendable, these features make possible the shield shaped roof assembly to be raised or lowered on the shaft 9 shown in Fig. 12.
  • Various ring diameters can be used to accommodate the usage of various sizes of filter frame parts and medium.
  • the wall section of the carousel is comprised of a series of perpendicular struts 4, both ends of the struts have the same tenon joints 4D.
  • the struts upper ends are snapped in place into the mortised joints of the lower side of the above described large bottom member which is ring 3 of the shield shaped roof assembly. They form an alignment with the supporting struts 2 of the shield shaped roof.
  • a second identical large circular ring 6 is snapped into place at the other end of the said perpendicular struts 4.
  • the ring 3 now becomes the upper ring of a complete carousel frame assembly and the ring 6 becomes the bottom member of the carousel ⁇ ed frame.
  • a completed carousel shaped filter frame assembly is shown in Fig. II
  • the invention a carousel shaped filter frame having a shield shaped roof which may be described as the roof of the carousel filter frame.
  • a foam filter medium is used on this shield filter frame shown in Fig. 1, a greater filtering capacity is created, for example; about 26% more filtering medium is utilized than the traditional circular shape filter of the same model.
  • This added filtering medium allows for greater filtering capacity as described as follows and shown in Figs. 1, 2, 3, 5, 6, 7,11, 12, and 13 which shows the advantage with the added" filtering capacity and the configuration change.
  • the greatly increased efficiency of the carousel shaped filter frame can easily be recognized by the large increases in filtering area and volume which is comprised in the roof area of the carousel filter frame.
  • the height of the sidewali of the carousel filter frame is marginally reduced to allow for the forming of the shape of the carousel.
  • the roof area of the new carousel filter becomes part of the filtering area and enhances the filtering capacity by about 26% in the following example.
  • the increased area of the carousel filter as compared to the traditional shaped circular filter can be calculated as follows:
  • a conventional filter having the following dimensions: length 20 inches, width 4 inches and when joined together to form a circle a diameter of 7 inches.
  • carousel filter was compared to the conventional filter having the same circumference but a one inch shorter height to accommodate the carousel roof.
  • the invention air filter frame accommodates an additional filtering surface area of 21 square inches or 26% more capacity than the conventional air filter.
  • the concept of the new carousel shaped filter was designed for its increased filtering capacity.
  • the carousel filtering body design which is revolutionary in concept and the form was chosen because it enables a much greater volume of air flow through the filter frame. This greater air volume is possible because the roof area or top of the carousel shaped air filter is claimed for filtering capacity which is not utilized in the conventional circular air filter.
  • the reduced wall height of the carousel filter is offset by the greatly enhanced top or roof area filtering capacity.
  • the carousel shaped design was engineered to allow the greater flow of air not only through the circumference sides but also to pass over and through the roof area of the carousel shaped filter and into the carburetor.
  • the service area increase in air filtration of the carousel air filter allows the user not only 26 percent more filtering capacity by square surface area but also a much longer utility life than the conventional air filter.
  • the foregoing benefits do not include a further enhancement which is the additional air filtering medium material which is also having a greater depth or volume capacity.
  • the above described filter top or roof design which is the carousel roof shaped filter frame, can be applied to the filter frame hereinafter described as the oval-circus-tent shaped frame.
  • Example Two The present invention, the carousel shaped filter frame shown in Fig. 1, by extending the perpendicular adjustable supporting struts 4 which if required can be replaced with a longer set of adjustable supporting struts 4, enables the wall of the carousel shape to be transformed into an elongated carousel shaped filter frame forming a distinct collapsible cylindrical filter frame with a top which can be compared to a shield shaped roof.
  • This distinct filter frame wrapped with filtering medium in Fig. 2 and shown a sectional view in Fig. 13 fits larger types of internal combustion' engines.
  • Example Three The present invention in Fig. 3 by removing the small top ring 1 and all the adjustable supporting struts 2, the assembly is transformed into a cylindrical shaped air filter frame which can be collapsed for shipping. When foam medium is wrapped around this frame it becomes a complete cylindrical air filter. There is another schematic transformation of this cylindrical air filter. It can be directly transformed from a circular shape shown in Fig. 4 by extending the length of its adjustable struts 4, A set of adaptable rings, upper ring 3 and bottom ring 6 shown in Fig. 3B can expand the diameter of the cylinder shaped filter frame, thus enabling it to fit larger air filter housings and forming a filter frame which can accommodate larger
  • RECTIFIED SHEET (RULE 91) ISA/EP depth filter materials. Where longer size cylindrical filter models are required, a centre ring 11 can be mortised mid-length shown in Fig. 14 into the adjustable supporting struts 4 to provide rigidity to the lengthened struts.
  • Example Four The invention described in example 3 and shown in Fig. 3 the cylindrical shape, by replacing the upper ring 3 with a smaller size ring 3 shown in Fig. 101 and with the adaptability of the rings and the adjustable bevel struts 4G in Fig. 4B and Fig. 10H, the cylindrical filter frame shape can easily be modified and transformed into a collapsible cone shape air filter frame, non-adjustable bevel strut Fig. 4 A can also be used when required Fig. 4C.
  • Example Five The present invention in Fig. 5 by splitting the carousel structure in Fig. IF into 2 parts; the shield shaped roof top and the bottom carousel shaped wall, two individual air filter frames are formed.
  • the top or roof of the carousel in its self forms a filter frame in the appearance of a shield show a sectional view in Fig. 11.
  • This shield shaped filter frame would be suitable for smaller vehicles having a smaller filter compartment, such as those found in a 1989 model year Toyota Tercel models.
  • Example Six The present invention in Fig. 1, and in Fig. 5 by removing the shield shaped roof structure of the invention, the remaining assembly is transformed into a circular shape, thus forming a circular shaped collapsible filter frame. When filtering media is wrapped around this frame a complete filtering body is produced as shown in Fig. 5B.
  • the said carousel frame structure can be transformed into an oval shaped filter frame having a similar carousel roof Fig. 6 and this shape may be compared to a circus tent configuration of a filter frame.
  • This transformation is easily achieved by splitting the two circular rings in half , making four halved rings to which four identical length adjustable struts 4 in Fig. IOC or in Fig. 10E are added to four half rings 3 and ring 6.
  • the half rings are then joined horizontally to each other by the struts which are snapped together by said connecting means.
  • the carousel shaped filter frame is thus transformed into a distinct oval shaped fitter frame with a roof, which in form may be compared to a circus tent configuration.
  • This circus tent configuration of a filter frame can then be separated into two distinct filter frames as shown in Fig. 7.
  • Example Nine The square filter frame in Fig. 8 of the invention is transformed from an oval shape in Fig. 7 ,: taking the four rings apart and replacing them with four rigid 90 degree corner frames 5 in Fig. 8A.
  • Each 90 degree corner frame 5 has two open ends 5B.
  • Each of the four 90 degree corner ends are each joined with one end of the adjustable struts 4F by a tenon connec »on 4D shown in Fig. 8C.
  • This square filter frame shown in Fig. 8D is made from non-adjustable struts, however when adjustability is required in a square frame, the adjustable struts 4 in Fig. 8G can be utilized.
  • the length of the adjustable strut 4 can be extended or retracted.
  • the square frame is reinforced by four adjustable struts 2 ⁇ hown in Fig. 8D.
  • the four adjustable struts 2 inside the square frame are each fasten o one of the 90 degree corner frames in Fig. 9 A by snapping into an eyelet, which is molded as part of the 90 degree corner frame.
  • Each of the other ends of the adjustable struts are attached together by a three quarter ring 7 shown in Fig. 8F. non-adjustale struts 4F can be used when demand justifies volume production.
  • Example Ten The square filter frame in Fig. 8 can be transformed into a rectangular filter frame shown in Fig. 9 by extending two adjustable struts 4 shown in Fig. 9G on two sides of the square frame.
  • the interior of the 90 degree corner frame of the rectangular filter frame is integrated and reinforced by one adjustable struts 2 with both hook ends in Fig. 9E and four adjustable strut 2 with round ends shown in Fig. 9F.
  • Four struts are required to secure the 90 degree angle frames.
  • These adjustable struts 2 are also used in all of the shield shaped roof configurations.
  • the square filter frame, as well as the rectangular filter frame shown in Fig. 9, one end of all four struts is attached to each inside corner of the four 90 degree rigid angles.
  • This attachment is made by fitting one end of the adjustable strut 2 onto an eyelet, which is molded to the 90 degree corner frame 5A in Fig. 9 A. These round ends 2D of the four struts 2 in Fig. 9E are secured to the eyelet by a snapped-in means or ca be secured by
  • RECTIFIED SHEET (RULE 91) ISA/EP a retainer pin 8B as displayed in Fig. 8D.
  • Other round ends of the four adjustable struts 2 are attached to a fifth adjustable strut 2 in Fig. 9D with hook ends.
  • the function of all the struts 2 used within the rectangular and square filter frames are to provide support and adjustability, this adjustability allows flexibility for extension or retraction of frame sizes, the extension or retraction of struts 2 is synchronized with the extension or retraction of struts 4 shown in Figs. 8D & 9C.
  • Various sizes of rectangular and square filter frame configurations can be produced by adjusting struts 2 and 4.
  • the rectangular and square filter frames described above are assembled by using only four typed of standard parts. These four standard parts can form many sizes of filter frames which can support many sizes of filtering medium. The ease of manufacture of these four parts achieve great savings in production.
  • filter frames can easily be assembled or dismantled when compactness for storage and shipping is called for. All the supporting struts from the top and bottom filter frame and/or the reinforcement centrepiece, can be stacked neatly together for packaging.
  • the invention can be reduced up to to 1/5 of its assembled size or less (the square and rectangular shapes about 1/3).
  • the invention's compactness makes for economical shipping/handling and for warehousing. Users of the invention will benefit from low cost processing and manufacturing. It is very adaptable for usage of various filtration materials which are suitable for wrapping around the invention.
  • the actual filtering area of the invention is up to 26% greater than conventional filters of the same model. Because the invention allows for the use of improved filtering medium, the depth capacity of the filtering medium being used further enhances the air volume filtration. With the increased efficiencies in air filtration capacity, reduced vehicle servicing and repairs, users of the invention will enjoy a much lower budget for their overall motor vehicle operating and maintenance costs. The invention will be excellent for exporting due to the lower production costs as mentioned above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention is a transformable and collapsible filter frame which can support various air intake filtering medias for internal combustion engines. The first form of the filter frame of the invention can be compared to the shape of a carousel. The carousel configuration which forms the filter frame is a separate entity from the filtering media. The invention which is a frame enables re-usable filtering medium to be applied over its surface. This re-usable filtering medium is a practical alternative to the existing air filters which are thrown away after they have been in use for a period of time and become inefficient in air filtration. A re-usable filtering media on the invention may be a polyurethane foam which can be manufactured in various shapes and sizes. The tailor made filtering media would fit around the invention filter frame. The carousel filter frame structure is comprised of expandable and adjustable parts which are filter frames in the form of rings and struts, when integrated both are used as supporting members. The rings and struts can be easily disassembled and reassembled by various connecting means. The said parts are made of durable materials, such as plastic, metal or wood for non-throw away permanent usage. The carousel filter body structure can be easily transformed into various configurations and sizes with the adaptable filter frame parts as desired to form other different types of filter shapes or forms. One shape the carousel can be split to form various shapes of filter frames such as a shield, circle, cylindrical, cone, an oval, square, rectangle and configurations resembling a circus tent and race-track.

Description

Description
Transformable, Collapsible, Permanent Use Air Filter Frame
Presently, most of the conventional air filters on the market, contain a paper filtering medium encased in a light metal mesh frame and bonded between two rubber or metal plates forming the framework which is in one solid piece. The paper filter element is held in this type of light framework with sealing materials on its top and bottom as one piece. This kind of conventional design seriouly limits the flexibility of adopting other more ecologically friendly, more economical, and more effective filtering elements such as; foam, fine mesh (wire), and other fibres for the purpose of being reusable and replaceable. The conventional filters are readily known to have a one time usage (life expectancy) and to discarded after use when they become clogged with dirt and air passage is impaired.
The currently used filter media on the market are composed of oil-treated paper fibre or the like, relying on an accordion-fold design to maximize filtration surface area but lacks depth or volume filtering. Conventional air filter manufactt rs attempt to create more surface area by having more folds, thus making many outward and inward small angles. Air w dynamics on this design limit consistent and even dirt particle entrapment at the acutely folded angles. Airflow is highly restricted through the acutely tensed angles, thereby inward angles accumulate more dirt This imbalance of dirt entrapment inhibits air flow and creates a further negative effect by restricting even air flow. The conventional filter is a compromise in design between filtering fine dust particles and permitting the required air flow to the engine. The conventional filters' inadequacy is due to its characteristic flawed design. This flawed design, limits the filtering medium the conventional filter can support and limits the capacity of air its filtering medium can adequately clean.
Newly purchased conventional filters colle large particles of dust but permit finer dust to pass thr ugh the filter media betwee.i the folds. Accumulated dust particles diminish air flow efficiency and an improper air/fuel burning ratio develops simultaneously. Engine oil contamination which commences immediately from the unfiltered small dust particles damages the tightly fit moving component parts of the engine.
1
RECTIFIED SHEET (RULE 91) ISA/EP Today, society's ecological standard is getting higher and higher, the conventional filter types, are considered inefficient and inadequate. These filters are based solely on square surface area filtration which is not sufficient to provide a long period of adequate airflow through normal use because it has no depth or volume filtration capacity for trapping dirt. The conventional air filter is not capable of very fine dirt entrapment which is required for today's engines nor can they satisfy society's growing environmental protection conscience. The demand for better environmental air filtration systems is sought The early clogging of the air filter gradually creates an imbalanced air/fuel burning ratio which is another major cause and contributor to oil contamination. The foregoing are causes that lead to more frequent oil changes, more frequent engine maintenance and premature engine failure. Further more, imbalanced air/fuel burning ratios increases fuel consumption, emits more pollutants through the exhaust, and yields less horse power. Consumers that service their car properly have to purchase many conventional filters during the life of their cars. Discarded conventional filters create large amounts of solid waste for land fills and natural resources used in their production depleted unnecessarily. The Conventional Air Filter does not measure up to the invention because is not ecologically sound, it does not function as good as it must nor is it economically viable? when compared to the invention.
The invention, a filter frame is a separate component from the filtering media and the frame facilitates changing of the filtering media with ease. The invention's major advantage over conventional air filters is to provide flexibility to adopt the best possible filtering media available on the market now and in the future. The invention permits the body of the filter to be adjusted in width, height, length and to form various shapes. Replacement filtering medium for usage on various models of internal combustion engines can be utilized with the invention frame. The shapes of the conventional intake air filters currently on the market are in great variations of sizes and forms. It's not an inexpensive or easy task for a manufacturer to have the number of molds in stock to produce the many required sizes and shapes of conventional filters that are required.
One of the materials that we have chosen to be the filtering medium to enhance the invention for the present, is a heat resistant polyurethane foam strip that can be wrapped around the invention. It can be tailored machine-cut into various shapes and
RECTIFIED SHEET (RULE 91) ISA/EP sizes as required. The filter medium can be taken off for cleaning, re-use and/or replacement. This type of foam medium has been proven to be reusable many times when used in accordance with instructions. The composition of the foam is a honeycombed network of thousands of tiny inter-locking open cells. When thoroughly wetted with a sticky agent, the filter media is in its most effective stage for air cleaning and dirt entrapment The air when entering the foam media, bounces around from cell to cell. The air flows through the medium but the dirt remains entrapped in the network of honeycomb cells and stuck therein by the sticky agent on the cell walls. The foam medium has depth and cubic filtering volume which can efficiently entrap more dirt than conventional filter medias. Small finer dust particles are also entrapped effectively and the foam medium provides a longer and steadier flow of clean air to the engine. Compared to the conventional filter medium, foam medium when enhanced with sticky agent has a longer, steadier and more effective filtering capacity and usage time before it must be washed and made ready for reuse.
The general objective of the invention is to provide an ecologically sound intake air filter frame for internal combustion engines. A non-throw away permanent use filter frame, enabling an ecological friendly and economical alternative to the conventional filter. By using a reusable filter frame, various reusable filtering media which are available now and in the future can be utilized.
* The purpose is to provide an interchangeable framework that is cost effective in manufacturing, shipping and handling to the benefit of the manufacturers and consumers
* To manufacture an intake air filter frame which creates larger open air filtering areas over existing limited air filter housing space and to apply better filtering medium results in a more efficient filter.
The invention an intake air filter frame can be made of various grades of plastic, metal or wood and is designed for use on internal combustion engines. The invention, the filter frame assembly has great flexibility as it is collapsible, reformable and can be folded. It is shipped flat to the consumer who can assemble it easily by snapping the parts together. The invention can be expanded lengthwise, widthwise and depthwise with its adjustable support members (struts) and its adjustable frame ends. Ultimately The invention, the filter frame can be transformed into many shapes. Great versatility
RECTIFIED SHEET (RULE 91) ISA/EP is achieved by it being capable of fitting many filtering sizes and applications on internal combustion engines. The invention is economical to manufacture, it is more efficient than conventional filters through its adaptability to use various filter media but most importantly it is a durable and ecological product because it is a non-throw-away permanent use filter frame.
The invention, as exemplified by a preferred embodiment, is described with reference to the drawings of :
Fig. 1 is a schematic representation of the invention formed in a carousel shape with polyurethane foam filter medium added to cover the configuration. The carousel shape can be described as having two distinct parts, a shield shaped roof and a circular shape having perpendicular walls. Fig. 1A showing the tubular shape adjustable supporting strut 2 forming the roof of the carousel. Fig. IB shows the sectional view of the spliced adjustable supporting strut 4 forming the wall of the carousel filter frame. Fig. 1C shows the securing sleeve 4A of the spliced supporting strut shown in Fig. IB. Fig. ID shows the plan view of the small top centre ring 1 of the carousel roof and Fig. IE shows the sectional-view of the small top centre ring 1 shown in Fig. ID. Fig. IF showing a complete configuration of the carousel filter frame covered with filtering medium. Fig. 1G shows the plan view of upper ring 3 and lower ring 6 inter-snapped on one within the others. Fig. IH shows the sectional view of rings in Fig. 1G and displays how varioue sizes of ring tightly fitted together ring within a ring. Fig. II shows the arc shape strut 4E and Fig. 1J shows the streight shape both are fixed length struts serve the same function as the supporting struts 4 displayed in Fig. IB and Fig. IF forming the carousel wall.
Fig. 2 is a schematic representation of the invention from Fig. 1 transformed into an elongated carousel shape with the same shield shape roof made by extending the length of the adjustable perpendicular struts 4, or replace them with a set of longer adjustable struts as required.
Fig. 3 is a schematic view of the invention shown from Fig. 2 being seperated into two different configurations, Fig. 3A displayed the top shield roof structure become a shield shape filter frame configuration by itself and Fig. 3B transformed into a cylindrical shape filter body.
4
RECTIFIED SHEET (RULE 91) ISA/EP Fig. 4 is a schematic transformation of the invention from Fig. 3B. A collapsible cylindrical shape air filter frame to be transformed into a collapsible cone shape configuration shown in Fig. 4C by replacing with the non-adjustable length strut 4G in Fig. 4A or the spliced adjustable strut 4 in Fig. 4B and as well as replacing with a larger bottom ring 6. Fig. 4D shows the plan veiw of various sizes of rings snapped together ring within ring and Fig. 4E shows the sectional view of Fig. 4D.
Fig. 5 is a schematic division of the invention from Fig. 1, by separating the carousel shape configuration into two separated shapes. Fig. 5 A a shield shape and Fig. 5B a circular :- .ape.
Fig. 6 is a schematic formation of the invention in Fig. 1 being transformed by spliting the 2 rings, upper ring 3 and lower ring 6 into halves adding 4 adjustable struts 4 from a carousel shape into a oval shape with roof which can be compared to a circus-tent shape and forms a complete air intake filter when covered with foam filtering medium.
Fig. 7 is a schematic division of Fig. 6 by separating the oval-circus-tent shape into two parts, two distinct oval shape filter frames are created. The first filter frame in Fig. 7 A is the top which becomes a oval shield in shape. The second figure shown in Fig. 7B appears as a oval shape in the form that can be described as a (race track) shaped configuration. Both separated portions of the oval circus tent shape when covered with foam filtering medium are each complete air intake filters.
Fig. 8 is a schematic representation of the invention showing the transformation of the filter shape from a race-track configuration in Fig. 7B into a square shape. Fig. 8 A shows the 90 degree corner frame 5. Fig. 8B shows the retainer pin 10 for securing the tubular shape adjustable strut 2 and the 90 degree corner frame. Fig. 8C shows the non-adjustable supporting strut 4F. Fig. 8D shows the completed view of a assembled square filter frame covered with medium. Fig. 8E shows the tubular shape adjustable supporting strut 2 with round ends 2D. Fig. 8F shows the centre piece 7 for connecting and securing one end of the four adjustable struts. Fig. 8G shows the spliced adjustable strut 4 forming the side of the square frame and Fig. 8H shows the sleeve 4A for securing the two spliced pieces in position in Fig. 8G.
RECTIFIED SHEET (RULE 91) ISA/EP Fig. 9 is a schematic view showing the transformation from a square shape shown in Fig. 8 into a rectangular shape and displays all the components that were used. Fig. 9A shows the 90 degree corner frame 5. Fig. 9B shows the non-adjustable supporting strut 4F. Fig. 9C shows the completed view of a assembled rectangular filter frame cover with medium. Fig. 9D shows the tubular shape supporting strut 2 used as a centre piece with both hook ends 2C. Fig. 9E shows the tubular shape strut 2 with two round ends 2D connecting with the eyelet 5A shows in Fig. 9A. Fig. 9F shows the adjustable spliced strut with a sleeve on. Fig. 9 G shows the sleeve for the spliced strut in Fig. 9F.
Fig. 10 shows all the components of the invention: Fig. 10A shows the 90 degree corner frame 5 forming the square and rectangular frame. Fig. 10B shows the retainer pin 10 for securing the 90 degree corner frame and tubular shape strut Fig. 10C shows the short version adjustable spliced strut 4 with sleeve for forming the supporting frame of the invention. Fig. 10D is the securing sleeve for the strut in Fig. 10C and Fig. 10E shows the long version of the adjustable spliced strut Fig. 10F is the securing sleeve for the spliced strut in Fig. 10E. Fig. 10G shows the centre piece 7 for the square frame in Fig. 8D and Fig. 8F. Fig. 10H shows the plan view of the small top centre ring 1 for shield shape configuration of the invention. Fig. 101 shows the plan view of the upper ring 3 and lower ring 6 in various sizes snapped together ring within ring. Fig. 10J shows the sectional view of the upper and lower rings in Fig. 101. Fig. 10K shows the tubular shape adjustable strut 2 with hook end 2C and channel hitch end 2F. Fig. 10L shows the tubular shape adjustable strut 2 with two round ends 2D. Fig. 10M shows the non-adjustable arc edge supporting strut 4E for forming the wall of the filter frame. Fig. ION shows the streight shape non-adjustable supporting strut 4F for forming the wall of the filter frame and also for forming the sides of the square and rectangular frame. Fig. 10O is the bevel adjustable supporting strut 4G for forming the wall of the cone shape filter frame.
Fig. 11 is a sectional view of the invention displayed in Fig. 3 A and 5 A, a shield shaped air filter frame fully wrapped with filtering medium secured within an air filter housing.
Fig.12 is a sectional view of the invention displayed in Fig. IF, a carousel shaped air filter frame fully wrapped with filtering medium secured within an air filter housing.
RECTIFIED SHEET (RULE 91) ISA/EP Fig. 13 is a sectional view of the invention displayed in Fig. 2, a cylindrical shape air filter frame fully wrapped with filtering medium secured within an air filter housing.
Fig. 14 is a schematic view of a cylindrical shape of the invention shows halved, snapped-in upper and lower rings, the tall body of the frame is re-inforced by a snug fitted centre ring 11.
The invention is collapsible, the frames and the supporting members (struts) are expandable, and adjustable, they have great adaptability. The invention, when assembled, all parts can be snapped tightly together by known industrial connecting means utilizing either male or female ends.
Once the frame has been assembled, a factory made tailor-fitted piece of polyurethane filtering foam or other filtering material can be wrapped neatly around the outside of the frame conforming to its shape. When the outside of the frame has been covered with the filtering medium, both top and bottom perimeters are covered by xible foam over to the inside edges of the frames. The foam contours to irregularities on the bottom and top of the filter frame and forms an effective resilient seal when the of the air filter housing cover of the vehicle is secured on them. Note: Intake of air must go through the filter medium before reaching the carburetor.
All shapes of the invention can be transformed from their two very basic forms by utilizing the components displayed in Fig. 10: one is circular and the other is square.
The invention, the filter frame when in the form of a carousel forms the skeleton of a complete filter body and is comprised of ; a small top ring, tubular shape supporting struts, upper ring, flat shape supporting struts and bottom ring.
The small top ring 1: displayed in Fig. ID & Fig. 10H is the top supporting member of the shield shape roof of the invention. It facilitates the securing of the tubular shape adjustable supporting struts and also supports a rubber sealing ring IB with a central hole 1C, this central hole is to accommodate a central shaft 9 shown in Fig. 11, 12, and 13 which is perpendicular to and rises from the carburetor. The function of the small top ring 1 is to position the filter frame and the filter medium which results in even
RECTIFIED SHEET (RULE 91) ISA/EP distribution of the downward pressure on the radially spaced supporting struts 2 and strut 4, when the wing-nut 8 in Fig. 11 is screwed down on the shaft to the air filter housing cover. The downward pressure presses on the foam medium and the rubber seal resulting an air tight resilient effect ID represents indentations spaced around the perimeter of the small top ring. These indentations are the connecting points of the hook ends of the strut 2C. 1A is the connecting rest bar that the strut 2C hooked on.
In Fig. 101 displayed various sizes of ring within other rings, two sets of ring(s) of same size can be used simultaniously as upper ring 3 and lower ring 6. All the rings in the invention, except the small top ring 1, are adjustable in diameter by adapting a larger or smaller ring and are designed to be joined by two hinges or other snap-on mechanical means in the middle 3A of the rings, allowing rings to be folded or separated in half for transforming into other shapes and for added compactness or for expansibility to fit various filter diameters and for shipping. AH rings may also be manufactured in one piece when required. For added versatility in accommodating a vast number of various filter sizes, all rings can be joined together in two or three to form the desired filter frame diameter. The adaptability is made possible as each upper ring 3 or lower ring 6 has threads on the outside circumference 3B and the inside circumference 3C in Fig. 10J. The threaded outside circumference of a smaller ring can be easily joined together by a larger ring with threaded inside circumference. The purpose is to obtain the nearest inside diameter and/or the nearest outside diameter of a required specific air filter application at the manufacturing site from the in-stock threaded rings. Alternative methods for joining the frames together but not limited to, are by screws or by other methods such as other male and female joints known in the industry.
In the invention, many methods of altering the length of the supporting adjustable struts to meet desired frame lengths can be utilized. The exemplified components of the invention and their connecting means are shown in Fig. 10. The supporting struts maybe adjusted in the following manner, by utilizing the following methods only for the purpose of demonstrating the validity of the invention. The adjusting methods are not limited to the following examples:
RECTIFIED SHEET (RULE 91) ISA/EP The first type of the supporting strut 2 of the invention has a long thin tubular body shown in Fig. 10K & Fig. 10L. Both ends of the tubular body are threaded inside in order to receive outside threaded extension end pieces. This allows for the extension or contraction of the pieces once they are connected. There are three extension arm pieces with different fitting ends which can be secured in position by the lock nuts 2A:
(A). The round end with small centre hole 2D in Fig. 8E is for use in forming the inner frame of the square frame in Fig. 8D and rectangular frame in Fig. 9D. The round end 2D when connecting with a eyelet 5A positioned at the inner corner of the 90 degree rigid corner piece 5 is secured by a retainer pin 10 in Fig. 8B and Fig. 9B. The connecting method utilizing a retainer pin 10 allows movement at the joint and permits flexibility for expansion and contraction of the filter frames should the outside adjustable struts be lengthened or shortened to meet the need of a longer or shorter filter frame.
(B). The hook end 2C is used when connecting onto the rest bar 1A which rest bars are spaced around the outer edge of the small top ring 1. The hook end 2C which rides on the rest bar is able to pivot up and down thus allowing the adjustable strut 2 which supports the foam media to form various heights. To co-ordinate with the channel hitch 2F, the small top ring 1 is also free to move up or down on the central perpendicular shaft 9 in Figs. 11, 12, and 13 which rises from the centre of the carburetor if the adjustable struts are lengthened or shortened.
(C). the channel hitch 2F is used to connect to the inside edge of the upper ring 3, positioned in the middle of the carousel shaped filter frame. The channel hitch 2F by itself is connected to a round end 2D by a retainer pin 10 shown in Fig. 10B. The channel hitch 2F has the flexibility to pivot 90 degrees thus enabling the adjustable struts 2 which support the foam media to form various heights.
The second type of the supporting struts 4 of the invention are comprised of adjustable struts and non-adjustable struts shown in Fig. 10C & Fig. 10E. The adjustable strut 4 is manufactured in varying lengths but can be further extended from or retracted to its manufactured length to meet various length requirements. The adjustable strut 4 is comprised of three pieces, two pieces of which are identical each
RECTIFIED SHEET (RULE 91) ISA/EP having a male tenon joint 4D on one end, the other ends of the two parts of the strut- have a splice joint 4B. The third piece of the strut is a sleeve 4A which is capable of moving up or down the two pieces and when secured in place over the spliced joint 4B by a lock nut 4C, thus a rigid strut 4 is made. The non-adjustable struts 4E in Fig. 10M & 4F in Fig. ION can be made in various desired lengths for specific applications when production volume justifies. The bevel adjustable strut 4G in Fig. 10O is the supporting strut specifically for the cone shaped frame. Bevel strut 4G can be manufactured in the adjustable form or the rigid form which ever is desired by requirements.
Adjustable strut 4 and bevel strut 4G and non-adjustable struts 4E, and 4F are snapped into female joints in the filter frame by male joints 4D which are located at either end of said struts. The male joints of these struts can be made in various joint already currently in use in the automotive parts or mechanical industry. The adjustable bevel strut 4G is solely used as the supporting members for the cone shaped filter configuration in Fig. 4. All the other adjustable struts 4 and non-adjustable struts 4E, and 4F, can be adapted for usage as perpendicular supporting members in the filter frames and horizontal reinforcing members for square filter frames shown in Fig. 7 and for rectangular filter frames shown in Fig. 8.
The 90 degree corner frame 5 in Fig. 10A is a rigid member but can be lengthened by inserting an adjustable strut 4 or a non-adjustable strut 4F into the female connecting joints 5B. The 90 degree corner frame comprises a connecting eyelet 5A and two female connecting ends 5B.
Because of the adjustability of all the supporting member struts, the separable and adaptable frame rings, and their flexibility which enables the invention to be transformed from one shape into many different shapes of three dimensional forms. The invention's configurations may be compared to the form of a carousel, to a shield, to a thick circular ring, to a cylinder, to a cone, to an oval figure which can be compared to the shape of a race-track, or a shape comparable to a circus tent Other forms of filter frame are created when 90 degree angles are utilized with adjustable struts. A square can be formed and then transformed into rectangular shapes, or any other right angled shape required for the filter frame to be used in. With the great versatility in
10
RECTIFIED SHEET (RULE 91) ISA/EP lengthening or shortening the supporting struts, adjusting the inside and outside diameters of the supporting rings and extending the lengths of the 90 degree angles, almost any necessary filtering frame shapes used on internal combustion engines can be adapted to and achieved.
Example One: The present invention forms one complete assembly in the form of a carousel in Fig. 1 and shown in sectional view in Fig. 12. The carousel is comprised of a small top ring 1, two large circular rings; one an upper ring 3, the second bottom ring 6 and two sets of adjustable supporting struts. The upper set of struts 2 are tubular and the lower set of perpendicular struts 4 are flat This carousel filter frame has a roof configuration which can be compared to a shield in shape.
The shield shaped roof filter frame is formed by joining a small top ring 1 to the first large ring 3 by a series of adjustable struts 2 which are supporting members. The struts 2 are spaced radially with one end 2C being hooked onto the rest bar 1A of the small top ring 1 and the other end of the struts, each which have a channel hitch 2F are snapped into place on the inner rim of the circular ring 3 which becomes the bottom part of the filter frame in the configuration of a shield shaped roof. Because the struts are flexible, contractile and extendable, these features make possible the shield shaped roof assembly to be raised or lowered on the shaft 9 shown in Fig. 12. Various ring diameters can be used to accommodate the usage of various sizes of filter frame parts and medium.
The wall section of the carousel is comprised of a series of perpendicular struts 4, both ends of the struts have the same tenon joints 4D. The struts upper ends are snapped in place into the mortised joints of the lower side of the above described large bottom member which is ring 3 of the shield shaped roof assembly. They form an alignment with the supporting struts 2 of the shield shaped roof. To complete the lower circular assembly, a second identical large circular ring 6 is snapped into place at the other end of the said perpendicular struts 4. The ring 3 now becomes the upper ring of a complete carousel frame assembly and the ring 6 becomes the bottom member of the carousel ψed frame. A completed carousel shaped filter frame assembly is shown in Fig. II
11
RECTIFIED SHUT (RULE 91) ISA/EP The invention a carousel shaped filter frame having a shield shaped roof which may be described as the roof of the carousel filter frame. When a foam filter medium is used on this shield filter frame shown in Fig. 1, a greater filtering capacity is created, for example; about 26% more filtering medium is utilized than the traditional circular shape filter of the same model. This added filtering medium allows for greater filtering capacity as described as follows and shown in Figs. 1, 2, 3, 5, 6, 7,11, 12, and 13 which shows the advantage with the added" filtering capacity and the configuration change.
The greatly increased efficiency of the carousel shaped filter frame can easily be recognized by the large increases in filtering area and volume which is comprised in the roof area of the carousel filter frame. The height of the sidewali of the carousel filter frame is marginally reduced to allow for the forming of the shape of the carousel. However in relation to the traditional shaped circular filter the roof area of the new carousel filter becomes part of the filtering area and enhances the filtering capacity by about 26% in the following example. The increased area of the carousel filter as compared to the traditional shaped circular filter can be calculated as follows:
* Carousel filter filtering area in body = Length x Width 3" x 20" = 60 sq. in.
* Area in roof = Pi x Radius x Slant Side 3.14 x 3 1/2" x 3.75" = 41 sq. in.
* Total filtering area of carousel filter =101 sq. in. " Conventional circular filter area = Length X Width 4" X 20" = 80 sq. in.
* Increased filtering area of carousel filter = 21 sq. in.
In the above example a conventional filter was used having the following dimensions: length 20 inches, width 4 inches and when joined together to form a circle a diameter of 7 inches.
In the above example the invention carousel filter was compared to the conventional filter having the same circumference but a one inch shorter height to accommodate the carousel roof.
For this particular example, the invention air filter frame accommodates an additional filtering surface area of 21 square inches or 26% more capacity than the conventional air filter.
12
RECTIFIED SHEET (RULE 91) ISA/EP The concept of the new carousel shaped filter was designed for its increased filtering capacity. The carousel filtering body design which is revolutionary in concept and the form was chosen because it enables a much greater volume of air flow through the filter frame. This greater air volume is possible because the roof area or top of the carousel shaped air filter is claimed for filtering capacity which is not utilized in the conventional circular air filter. The reduced wall height of the carousel filter is offset by the greatly enhanced top or roof area filtering capacity. The carousel shaped design was engineered to allow the greater flow of air not only through the circumference sides but also to pass over and through the roof area of the carousel shaped filter and into the carburetor. The service area increase in air filtration of the carousel air filter allows the user not only 26 percent more filtering capacity by square surface area but also a much longer utility life than the conventional air filter. The foregoing benefits do not include a further enhancement which is the additional air filtering medium material which is also having a greater depth or volume capacity. The above described filter top or roof design, which is the carousel roof shaped filter frame, can be applied to the filter frame hereinafter described as the oval-circus-tent shaped frame.
Example Two: The present invention, the carousel shaped filter frame shown in Fig. 1, by extending the perpendicular adjustable supporting struts 4 which if required can be replaced with a longer set of adjustable supporting struts 4, enables the wall of the carousel shape to be transformed into an elongated carousel shaped filter frame forming a distinct collapsible cylindrical filter frame with a top which can be compared to a shield shaped roof. This distinct filter frame wrapped with filtering medium in Fig. 2 and shown a sectional view in Fig. 13 fits larger types of internal combustion' engines.
Example Three: The present invention in Fig. 3 by removing the small top ring 1 and all the adjustable supporting struts 2, the assembly is transformed into a cylindrical shaped air filter frame which can be collapsed for shipping. When foam medium is wrapped around this frame it becomes a complete cylindrical air filter. There is another schematic transformation of this cylindrical air filter. It can be directly transformed from a circular shape shown in Fig. 4 by extending the length of its adjustable struts 4, A set of adaptable rings, upper ring 3 and bottom ring 6 shown in Fig. 3B can expand the diameter of the cylinder shaped filter frame, thus enabling it to fit larger air filter housings and forming a filter frame which can accommodate larger
13
RECTIFIED SHEET (RULE 91) ISA/EP depth filter materials. Where longer size cylindrical filter models are required, a centre ring 11 can be mortised mid-length shown in Fig. 14 into the adjustable supporting struts 4 to provide rigidity to the lengthened struts.
Example Four: The invention described in example 3 and shown in Fig. 3 the cylindrical shape, by replacing the upper ring 3 with a smaller size ring 3 shown in Fig. 101 and with the adaptability of the rings and the adjustable bevel struts 4G in Fig. 4B and Fig. 10H, the cylindrical filter frame shape can easily be modified and transformed into a collapsible cone shape air filter frame, non-adjustable bevel strut Fig. 4 A can also be used when required Fig. 4C.
Example Five: The present invention in Fig. 5 by splitting the carousel structure in Fig. IF into 2 parts; the shield shaped roof top and the bottom carousel shaped wall, two individual air filter frames are formed. The top or roof of the carousel in its self forms a filter frame in the appearance of a shield show a sectional view in Fig. 11. This shield shaped filter frame would be suitable for smaller vehicles having a smaller filter compartment, such as those found in a 1989 model year Toyota Tercel models.
Example Six: The present invention in Fig. 1, and in Fig. 5 by removing the shield shaped roof structure of the invention, the remaining assembly is transformed into a circular shape, thus forming a circular shaped collapsible filter frame. When filtering media is wrapped around this frame a complete filtering body is produced as shown in Fig. 5B.
Example Seven: According to the invention in Fig. 1, the said carousel frame structure can be transformed into an oval shaped filter frame having a similar carousel roof Fig. 6 and this shape may be compared to a circus tent configuration of a filter frame. This transformation is easily achieved by splitting the two circular rings in half , making four halved rings to which four identical length adjustable struts 4 in Fig. IOC or in Fig. 10E are added to four half rings 3 and ring 6. The half rings are then joined horizontally to each other by the struts which are snapped together by said connecting means. The carousel shaped filter frame is thus transformed into a distinct oval shaped fitter frame with a roof, which in form may be compared to a circus tent configuration. This circus tent configuration of a filter frame can then be separated into two distinct filter frames as shown in Fig. 7.
14
RECTIFIED SHEET (RULE 91) ISA/EP Example Eight: The present invention in Fig. 6 and in Fig. 7 by removing the top small ring 1 and struts 2, transforms the remaining filter frame into an oval shaped assembly which in form can be compared to a configuration of a two tiers race track displayed in Fig. 7B. A distinct oval shaped air filter is formed from this frame when filtering medium is wrapped around it
Example Nine: The square filter frame in Fig. 8 of the invention is transformed from an oval shape in Fig. 7 ,: taking the four rings apart and replacing them with four rigid 90 degree corner frames 5 in Fig. 8A. Each 90 degree corner frame 5 has two open ends 5B. Each of the four 90 degree corner ends are each joined with one end of the adjustable struts 4F by a tenon connec »on 4D shown in Fig. 8C. This square filter frame shown in Fig. 8D is made from non-adjustable struts, however when adjustability is required in a square frame, the adjustable struts 4 in Fig. 8G can be utilized. The length of the adjustable strut 4 can be extended or retracted. With the extension or retraction of the struts, sizes of the squares can be readily changed. The square frame is reinforced by four adjustable struts 2 ^hown in Fig. 8D. The four adjustable struts 2 inside the square frame are each fasten o one of the 90 degree corner frames in Fig. 9 A by snapping into an eyelet, which is molded as part of the 90 degree corner frame. Each of the other ends of the adjustable struts are attached together by a three quarter ring 7 shown in Fig. 8F. non-adjustale struts 4F can be used when demand justifies volume production.
Example Ten: The square filter frame in Fig. 8 can be transformed into a rectangular filter frame shown in Fig. 9 by extending two adjustable struts 4 shown in Fig. 9G on two sides of the square frame. The interior of the 90 degree corner frame of the rectangular filter frame is integrated and reinforced by one adjustable struts 2 with both hook ends in Fig. 9E and four adjustable strut 2 with round ends shown in Fig. 9F. Four struts are required to secure the 90 degree angle frames. These adjustable struts 2 are also used in all of the shield shaped roof configurations. As shown in Fig. 8, the square filter frame, as well as the rectangular filter frame shown in Fig. 9, one end of all four struts is attached to each inside corner of the four 90 degree rigid angles. This attachment is made by fitting one end of the adjustable strut 2 onto an eyelet, which is molded to the 90 degree corner frame 5A in Fig. 9 A. These round ends 2D of the four struts 2 in Fig. 9E are secured to the eyelet by a snapped-in means or ca be secured by
15
RECTIFIED SHEET (RULE 91) ISA/EP a retainer pin 8B as displayed in Fig. 8D. Other round ends of the four adjustable struts 2 are attached to a fifth adjustable strut 2 in Fig. 9D with hook ends. The function of all the struts 2 used within the rectangular and square filter frames are to provide support and adjustability, this adjustability allows flexibility for extension or retraction of frame sizes, the extension or retraction of struts 2 is synchronized with the extension or retraction of struts 4 shown in Figs. 8D & 9C. Various sizes of rectangular and square filter frame configurations can be produced by adjusting struts 2 and 4. The rectangular and square filter frames described above are assembled by using only four typed of standard parts. These four standard parts can form many sizes of filter frames which can support many sizes of filtering medium. The ease of manufacture of these four parts achieve great savings in production.
In summary, the sizes of prior art air filters are very bulky and unwieldy because the bigger the vehicle the bigger their filter size. Because of the collapsible structural design of the invention, filter frames can easily be assembled or dismantled when compactness for storage and shipping is called for. All the supporting struts from the top and bottom filter frame and/or the reinforcement centrepiece, can be stacked neatly together for packaging. The invention can be reduced up to to 1/5 of its assembled size or less (the square and rectangular shapes about 1/3). The invention's compactness makes for economical shipping/handling and for warehousing. Users of the invention will benefit from low cost processing and manufacturing. It is very adaptable for usage of various filtration materials which are suitable for wrapping around the invention. The actual filtering area of the invention is up to 26% greater than conventional filters of the same model. Because the invention allows for the use of improved filtering medium, the depth capacity of the filtering medium being used further enhances the air volume filtration. With the increased efficiencies in air filtration capacity, reduced vehicle servicing and repairs, users of the invention will enjoy a much lower budget for their overall motor vehicle operating and maintenance costs. The invention will be excellent for exporting due to the lower production costs as mentioned above.
16
RECTIFIED SHEET (RULE 91) ISA/EP

Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows :While the invention is described in connection with certain preferred embodiments, there is no intent to limit the air filter frame to those embodiments. On the contrary, the intent is to cover all alternatives, modifications, and equivalents included within the spirit and scope of the invention as defined by the appended claims.
1. The invention, intake air filter frames which are comprised of simple but different components, utilizing currently known industrial connecting means thus forming the configuration appearing in the shape of a carousel figure. The carousel figure can be manufactured in a collapsed state that is transformable into various shapes by adjustable parts. The expandable parts or contractile parts can be adjusted to meet various sizes and shapes of filter frames.
2. The intake air filter frai e assembly of claim 1, a carousel configuration can be transformed into a cylindrical shape with the same carousel roof top configuration. A distinctive filter frame by itself is made by extending the heights of the perpendicular adjustable supporting struts.
3. The intake air filter frame assembly of claim 1 and claim 2 can be transformed into another air filter frame by separating the roof top portion of the carousel frame. The remaining frame is in the configuration of a collapsible cylindrical shape filter frame.
4. The intake air filter assembly of claim 3 can be transformed into a cone shape configuration by replacing the upper ring with a smaller ring and a set of modified* adjustable supporting struts.
5. The intake air filter frame assembly of claim 1 can be transformed into another air filter frame by separating the top portion of the carousel frame. The top portion of the carousel frame is in the configuration of a distinct collapsible circular shield shape filter frame.
17
RECTIFIED SHEET (RULE 91) ISA/EP
6. The intake air fitter frame assembly of claim 1 can be transformed into another filter frame by separating the bottom portion of the carousel configuration. The bottom portion of the carousel frame is in the configuration of a distinct collapsible circular shape filter frame.
7. The intake air filter frame assembly of claim 1 can be transformed into an oval shape configuration resembling a circus tent shape. The oval filter frame is made by adding four equal lengths of adjustable struts joined horizontally with the four halved rings.
8. The intake air filter frame assembly of claim 1, related to claim 7. The top portion of the oval circus tent configuration can be separated and transformed into a distinct collapsible oval shield shape filter frame.
9. The intake air filter frame assembly of claim 1, claim 7 and more on claim 8. By removing the portion of the oval circus tent configuration, the remaining porting can be transformed into a collapsible oval shaped filter frame.
10. The intake air filter frame assembly of claim 5 and more on claim 7 can be made into a square shaped filter frame. Four halved rings are replaced with four equal sized rigid 90 degree corner frames. The four rigid 90 degree corner frames are joined together with equal length adjustable horizontal struts forming a square filter frame which is then reinforced by five pieces of supporting adjustable members which are utilized from the top portion of the oval circus tent in claim 7 and in the roof of the carousel shape filter frame in claim 1.
11. The intake air filter frame assembly of claim 10 wherein transformed into a rectangular frame by extending the length of the two horizontal struts. The square frame by the extension of its sides and internal support struts is transformed into a rectangular frame.
12. The intake air assembly of claim 1, the top small ring is a circular reinforced member, designed to hold a central shaft for securing the air fitter container onto the carburettor. The top ring is notched to receive eight connecting adjustable struts and
18
RECTIFIED SHEET (RULE.91) ISA/EP also supports a rubber O-ring which is designed to cushion and be an air tight resilient seal between the filter container, the filter medium, and the carburettor.
13. The intake air assembly of claim 1 wherein the bottom and middle ring is a supporting member having various diameters which can be split in two, re-joined together by a snapping method, folded in half or made larger or smaller by adding to or removing one ring from its threaded inside or outside edge. The rings when formed have connecting female joints spaced around the rings to receive perpendicular strut ends and female connecting joints at the point of the split to receive horizontal male ends of struts.
14. The intake air filter assembly in claim 1, wherein the tubular shape adjustable strut of the invention is made up of a long thin tubular body, both ends of the tubular body are internally threaded to receive outside threaded extension end pieces. There are three extension arm pieces which are inter-changeable with the body of the struts. The three different extension arms are (A), a round end, (B). a hook end, (C). a channel hitch end all of which can be secured in position by lock nuts at the threaded ends.
15. The air intake assembly in claim 1, wherein The flat body adjustable strut is comprised of three pieces, two pieces of which are identical each having a male tenon joint on one end, the other ends of the two parts of the struts have a splice joint The third piece of the strut is a sleeve which is capable of moving up or down the two pieces and when secured in place over the spliced joint by tighten a lock nut at one side in mid length of the said sleeve.
16. The intake air assembly in claim 10, wherein the 90 degree rigid corner frame comprises a connecting eyelet at the inside corner and two female connecting ends at each end of the frame.
17. The intake air assembly in claim 5, wherein the adjustable bevel strut having a angle body and is comprised of three pieces, two pieces of which are identical each having a male tenon joint on one end, the other ends of the two parts of the struts have a splice joint The third piece of the strut is a sleeve which is capable of moving up or down the two pieces and when secured in place over the spliced joint by tightening a lock nut at one side in mid length of the said sleeve.
19
RECTIFIED SHEET (RULE 91) ISA/EP
PCT/CA1994/000617 1994-02-18 1994-11-03 Transformable, collapsible permanent use air filter frame WO1995022392A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU81021/94A AU8102194A (en) 1994-02-18 1994-11-03 Transformable, collapsible permanent use air filter frame
US08/563,974 US5807415A (en) 1994-02-18 1995-11-29 Transformable, collapsible, permanent use air filter frame

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN94202820.1 1994-02-18
CN94202820U CN2187971Y (en) 1994-02-18 1994-02-18 Air filter
US08/563,974 US5807415A (en) 1994-02-18 1995-11-29 Transformable, collapsible, permanent use air filter frame

Publications (1)

Publication Number Publication Date
WO1995022392A1 true WO1995022392A1 (en) 1995-08-24

Family

ID=25743552

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1994/000617 WO1995022392A1 (en) 1994-02-18 1994-11-03 Transformable, collapsible permanent use air filter frame

Country Status (3)

Country Link
CN (1) CN2187971Y (en)
AU (1) AU8102194A (en)
WO (1) WO1995022392A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9089807B2 (en) 1999-02-26 2015-07-28 Donaldson Company, Inc. Filter arrangement; sealing system; and methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4824355B2 (en) * 2005-07-12 2011-11-30 株式会社マーレ フィルターシステムズ Air filter
CN104941276A (en) * 2015-06-05 2015-09-30 浙江硕华医用塑料有限公司 Filter cover
CN108626811B (en) * 2018-05-23 2020-09-29 浙江商业职业技术学院 Anion air purification device based on thing networking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1448425A (en) * 1964-09-25 1966-08-05 App Und Metallbau Wald A G Air filter
FR2105587A5 (en) * 1970-09-14 1972-04-28 Sofiltra Filter element - open-cell plastic foam body retained by projections on perforated sleeve
US4128408A (en) * 1977-05-09 1978-12-05 Poole Walter D Air filter for motor vehicle carburetor
US4265647A (en) * 1979-04-06 1981-05-05 Donachiue James P Air prefilter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1448425A (en) * 1964-09-25 1966-08-05 App Und Metallbau Wald A G Air filter
FR2105587A5 (en) * 1970-09-14 1972-04-28 Sofiltra Filter element - open-cell plastic foam body retained by projections on perforated sleeve
US4128408A (en) * 1977-05-09 1978-12-05 Poole Walter D Air filter for motor vehicle carburetor
US4265647A (en) * 1979-04-06 1981-05-05 Donachiue James P Air prefilter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9089807B2 (en) 1999-02-26 2015-07-28 Donaldson Company, Inc. Filter arrangement; sealing system; and methods
US9707503B2 (en) 1999-02-26 2017-07-18 Donaldson Company, Inc. Filter arrangement; sealing system; and methods

Also Published As

Publication number Publication date
CN2187971Y (en) 1995-01-25
AU8102194A (en) 1995-09-04

Similar Documents

Publication Publication Date Title
US5807415A (en) Transformable, collapsible, permanent use air filter frame
US7303604B2 (en) Filter arrangement; sealing system; and methods
EP1795246B1 (en) Air cleaner
US6960245B2 (en) Filter arrangement and methods
US6221122B1 (en) Filter element and methods
CA2550734A1 (en) Filter element comprising a seal arrangement and method for making the same
US6328778B1 (en) Filter apparatus
CN1750863A (en) Z-filter media with reverse-flow cleaning systems and methods
CN102258922A (en) filter media pleat pack retention
KR102393874B1 (en) Reusable air filter systems and methods
WO1995022392A1 (en) Transformable, collapsible permanent use air filter frame
CN201333380Y (en) Folded filter element with high filtration flux
JPH07256031A (en) Filter bag holding frame for receiving filter bag and being reusable or perfectly combustible and its preparation
US6293410B1 (en) No-cure fuel filter and method for making same
CN215939355U (en) Conical dust and oil removing filter
KR102193525B1 (en) Filter and manufacture method thereof
KR200432057Y1 (en) Filter element comprising a seal arrangement
CN214513423U (en) Compound carton coating cloud entrapment filter
CN210434096U (en) Pressure filtration device for automobile coating production
CN213527879U (en) Novel small-flow air filter
RU12041U1 (en) FILTER
CN211961930U (en) Cleaning machines people filter core quick assembly disassembly device and cleaning machines people
KR200223571Y1 (en) Automotive Air Cleaner
JPS63209712A (en) Filter element
WO2004039475A1 (en) A filter element and an attachment system for a filter element

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK ES FI GB GE HU JP KE KG KP KR KZ LK LT LU LV MD MG MN MW NL NO NZ PL PT RO RU SD SE SI SK TJ TT UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA