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    Oil filters
    1.
    发明授权
    Oil filters 失效

    公开(公告)号：US2877902A

    公开(公告)日：1959-03-17

    申请号：US56886756

    申请日：1956-03-01

    Applicant: FRAM CORP

    Inventor： CHASE CHARLES B ,  JAMES WILLIAM S

    IPC: B01D27/08 ,  B01D27/10 ,  B01D35/30

    CPC classification number: B01D35/306 ,  B01D27/08 ,  B01D27/103 ,  B01D27/106 ,  Y10S116/42 ,  Y10S210/17

    Abstract: 796,475. Oil filters. FRAM CORPORATION. Oct. 18, 1956 [March 1, 1956], No. 31735/56. Class 46. [Also in Group XXII] An oil filter of the screw-on, throw-away type comprises a cup-shaped shell having an end wall and integral side walls extending the entire length of the shell and supporting the entire fluid pressure on the end, a sheet metal closure for the other end of the shell sealed to the side walls, a filter cartridge within the shell, and a reinforcing plate inside the shell and contacting the closure, the plate having a central opening surrounded by internal threads by which it may be screwed on to a projection to secure the filter in its operative position. A cup-shaped casing 10 locates within itself, by ribs 12, a flange 17 on an end plate 15 secured to a pleated filter 14 surrounding a perforated tube 19 the upper end of which encircles a cover 21 supporting a spring 22 and carrying a by-pass valve 48. The spring presses the filter down on to a thick metal reinforcing plate 27 which abuts the wall of the casing 10 to provide a backing when a turned over joint 25, 26 is made between the casing and an end wall 24. The centre of the plate 27 is formed as a screwed sleeve 28 to adopt the casing to be screwed on to a bush 34 whose upper end 35 engages a bottom cover 23 for the tube 19 to lift the filter off the plate 27 and thereby provide a passage for oil to the exterior of the pleats 14. Oil enters this passage through ports 42 in the plate 27, these ports co-operating with ports 41 in an adaptor plate 37 which makes fluid tight contact with the plate 27 through a packing ring. The space beneath the adaptor plate 37 communicates with an annular recess 32 in the engine block of an internal combustion engine, a conduit 30 connecting the recess with the oil sump. A plate 46 having a single aperture 47 divides the space beneath the adaptor 37 to prevent loss of oil if the filter unit is mounted in a tilted position. The bush 34 is hollow and connects the central tube 19 with a passage 31 in the block 29 and leading to the engine bearings. A flange 36 on the bush 34 clamps the adaptor plate 37 and plate 42 to the block 29. The reinforcing plate may be flat and a packing ring be disposed in an outwardly facing recess in the end wall 24 ; a flat disc of rubber lies on the plate 27 above the ports in the plate to form a non-return valve which prevents escape of oil from the filter.

    Combined full-flow and part-flow oil filter
    2.
    发明授权
    Combined full-flow and part-flow oil filter 失效
    组合全流量和部分流量的油过滤器

    公开(公告)号：US2748949A

    公开(公告)日：1956-06-05

    申请号：US45887354

    申请日：1954-09-28

    Applicant: FRAM CORP

    Inventor： JAMES WILLIAM S

    IPC: B01D29/21 ,  B01D35/147

    CPC classification number: B01D29/21 ,  B01D29/54 ,  B01D35/147 ,  B01D35/157 ,  B01D35/1576 ,  Y10S210/13

    Abstract: 773,355. Oil filters. FRAM CORPORATION. Sept. 23, 1955 [Sept. 28, 1954], No. 27204/55. Class 46. An oil filter cartridge unit comprises a housing constructed for free entry of oil therein and adapted to receive a detachable shell which has permanently secured therein a full-flow and a part-flow cartridge in axial alignment and each having two end walls and a central tube receiving space, the part-flow cartridge having in one end wall, in addition to the central tube opening, a second, outlet opening laterally spaced from the central opening. The part-flow cartridge is located between the full-flow cartridge and the base of the unit through which the part-flow cartridge discharges. Clamped to the crank case 17 of an internal combustion engine by a headed tube 13 screwed into an adapter nut 25 screwed therein is a shell 10 housing axially aligned full flow and part flow filters 32, 33 respectively. The full flow filter 32 comprises an annular pleated filter member 45 of relatively coarse paper disposed in a casing 34 common to both filters and having apertures 35, the filter member being secured at its edges to walls 46 and spaced from the central tube 13 by a perforated corrugated cylinder 48. Oil to be filtered enters from an aperture 18 in the crank case into an annular chamber 19 therein to flow upwardly to an orifice 21 leading into the shell 10 whence it passes through the perforations 35, filter member 45, cylinder 48 and apertures 53 in the central tube 13 to an outlet 31 formed in the crankcase. The part flow filter is of similar construction except that the filter member 36 is of finer material and the outlet from the corrugated cylinder 39 is through its end into a metering passage 29 into the crankcase. A spring 49 presses the casing 34 against the crank case and a spring pressed by-pass valve 55 in the tube 13 opens if clogging restricts the oil flow.

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