# US 9,517,426 B2 · Oil filter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,426 B2 - Document ID: US9517426B2 - Status: Granted - Kind: B2 - Application number: 14/439,365 - Filed: 2013-08-05 - Published: 2015-08-27 - Granted: 2016-12-13 - Earliest claimed: 2012-10-29 - Assignees: Parker Hannifin Industria E Comercio Ltda. - Applicants: Parker Hannifin IndúStria E ComéRcio Ltda. - Inventors: Genaro Pascale Neto - Web page: https://patentgrep.com/patent/US9517426B2 ## CPC - B01D 35/34: open-topped (B01D35/31 takes precedence) - B01D 29/11: with bag, cage, hose, tube, sleeve or like filtering elements - B01D 2201/295: with projections extending in a radial outward direction, e.g. for use as a guide, spacing means - B01D 2201/305: Snap, latch or clip connecting means - B01D 2201/4076: Anti-rotational means - B01D 2201/4084: Snap or Seeger ring connecting means - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract The filter has a head (10) with an oil inlet and an oil outlet (11,12), and to which is coupled an open end (21) of a cup (20) lodging a filtering element (30) which has an inner central chamber (32) and an outer annular chamber (33), connected to the oil inlet and oil outlet (11,12). A top cap (50) has a median annular portion (52) affixed to the filtering element (30), and a peripheral portion (53) with windows and positioned on an open end (33a) of the outer annular chamber (33) and seated onto the open end (21) of the cup (20). Rotational locking means (60) and axial locking means (80) are incorporated to the open end (21) of the cup (20) or to the peripheral portion (53) of the top cap (50), it being further provided, in the other of said parts, rotational locking receiving means (70) and axial locking receiving means (90), in which are fitted and retained the rotational locking means (60) and the axial locking means (80). ## Claims ### Claim 1 An oil filter, comprising: a head (10) having an oil inlet and an oil outlet (11, 12); a cup(20) having an open end (21) coupled to the head (10); a filtering element (30) internal to the cup (20) and defining an inner central chamber (32) and an outer annular chamber (33), each one being provided with an open end (32b, 33a) connected to the oil inlet and the oil outlet (11, 12), respectively; a top cap (50) having a central nozzle (51) connected to the open end (32b) of the inner central chamber (32), a median annular portion (52)closing the adjacent end of the filtering element (30) and a peripheral portion (53) provided with windows and positioned on the open end (33a) of the outer annular chamber (33) and seated onto the open end (21) of the cup (20); at least one rotational locking means (60) and at least two axial locking means (80) which are incorporated to one of parts defined by the open end (21) of the cup (20) and by the peripheral portion (53) of the top cap (50); at least one rotational locking receiving means (70) and at least two axial locking receiving means (90), provided in the other of said parts (21, 53) and in an interior of which are respectively fitted and retained the rotational locking means (60) and the axial locking means (70), upon seating of the peripheral portion (53) of the top cap (50) onto the open end (21) of the cup (20), characterized in that each axial locking means (80) is defined by a projection (81), in form of a rounded arrow axially projecting from the open end (21) of the cup (20), and two axial locking receiving means (90) are provided, each of them being defined by an axial recess (91), with a contour corresponding to that of the projection (81) and provided in a respective peripheral skirt segment (92), each being elastically deformable and incorporated to the top cap (50) and facing a respective axial projection (81). ### Claim 2 (depends on 1) The oil filter, according to claim 1, characterized in that the rotational locking means (60) takes a form of a projection (61) which projects axially from the open end (21) of the cup (20), the rotational locking receiving means (70) being defined by a marginal radial recess (71) provided in the peripheral portion (53) of the top cap (50). ### Claim 3 (depends on 2) The oil filter, according to claim 2, in which the open end (21) of the cup (20) is provided with a tubular projection (21c) extending axially to end in a peripheral edge (21d), the filter being characterized in that the projection (61) projects axially from the peripheral edge (21d) of the open end (21) of the cup (20). ### Claim 4 (depends on 3) The oil filter, according to claim 3, characterized in that four rotational locking means (60) are provided, equally spaced from each other along the peripheral edge (21d) of the open end (21) of the cup (20), as well as four rotational locking receiving means (70). ### Claim 5 (depends on 1) The oil filter, according to claim 1, characterized in that the filter presents the open end (21) of the cup (20) provided with a tubular projection (21c) extending axially to end: in a peripheral edge (21d), wherein the projection (81) of each axial locking means (80) projects axially from a bottom of an axial recess (82) defined in the tubular projection (21c). ### Claim 6 (depends on 1) The oil filter, according to claim 1, the top cap (50) incorporates a tubular skirt (56) turned to the filtering element (30) and which is radially spaced back in relation to a periphery of the top cap (50) and configured to be tightly fitted, around an adjacent end of a tubular sidewall (31) of the filtering element (30), wherein the peripheral skirt segments (92) are concentric and radially external to the tubular skirt (56) and positioned in an axial projection of the peripheral edge (21d) of the open end (21) of the cup (20).