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US 7,628,280 B2Granted
Liquid filter arrangement; components; and methods
AssigneeDonaldson Company, Inc.
InventorsBrian Mandt, Brent A. Gulsvig, John R. Hacker
Life of this patent
Estimating the term…
Abstract
Liquid filter arrangements are described and shown. The arrangements generally include a filter head, a seal adaptor, and a filter member comprising a shell enclosing a cartridge. Unique features for interface between the filter cartridge and the filter head are provided. Also provided are unique filter head features and cartridge features.
Claims7
A liquid filter arrangement comprising:
- (a) a filter head including:
- (i) a first head portion including a liquid flow inlet and a liquid flow outlet;
- (ii) a second head portion comprising an outer ring having an outer surface with a first threaded section and a second seal surface;
- (A) the first threaded section being positioned between the second seal surface and the first head portion;
- (b) a seal adapter having:
- a first, upper, mounting portion;
- a second, lower, seal ring;
- and, a conduit region;
- (i) the first, upper, mounting portion having a threaded outer region and a liquid outlet flow aperture therethrough;
- (A) the threaded outer region having a first, outer, diameter and the liquid outlet flow aperture in the first, upper, mounting portion having a first, inner, diameter;
- (ii) the second, lower, seal ring defining a radially inwardly directed seal surface;
- (A) the radially inwardly directed seal surface of the second, lower, seal ring having a diameter greater than each of:
- the first, outer, diameter of the threaded outer region;
- and, the first inner diameter of the first, upper, mounting portion;
- (iii) the conduit region having an internal conduit surface with an inverted funnel shape;
- (A) the internal conduit surface being configured to funnel filtered liquid flow from a filter cartridge into the liquid outlet flow aperture of the first, upper, mounting portion of the seal adapter;
- and,
- (iv) the first region of the seal adapter being threadably mounted on the filter head in a position with at least a portion of the seal adapter surrounded by, and spaced inwardly from, the second head portion;
- and,
- (c) a liquid filter member removably mounted on the filter head and sealed to both the second seal portion of the second head portion and the seal ring of the seal adapter;
- the liquid flow member comprising:
- (i) an outer shell having a sidewall defining an interior and an open end;
- (A) the outer shell being removably threadably mounted on the filter head with a seal member positioned between the liquid filter member and the second seal surface of the second head portion;
- (B) the outer shell being removable from the filter head by unthreading the liquid filter member therefrom;
- and,
- (ii) a filter cartridge positioned within the interior of the outer shell;
- (A) the filter cartridge comprising media:
- extending between first and second end caps;
- and, surrounding an open interior;
- (B) the first end cap being an open end cap with a central aperture and including an axially outwardly projecting seal mount thereon,
- (C) the filter cartridge including a seal mounted on the axially outwardly projecting seal mount and sealed against the radially inwardly directed cartridge seal surface of the second lower seal ring, of the seal adapter;
- and,
- (iii) a top plate having an inwardly threaded region for securing the outer shell to the filter head;
- (A) the filter cartridge not being sealed by a seal member to the top plate.
31 more elements
Dependencies are inferred from the claim text.