Back to results
US 10,744,431 B2Granted
Liquid filter arrangement and methods
AssigneeDonaldson Company, Inc.
InventorsMichael J. Gustafson, Kurt Joscher, David B. Harder, Brian Tucker
Life of this patent
Estimating the term…
Abstract
A filter cartridge includes a threaded sleeve having a seal holder recess and seal member. The filter cartridge is for removably threading onto a filter head that includes threads for connection to the filter cartridge by way of the threaded sleeve. The filter head includes a ramp that engages the seal member to form a seal. The force needed to make the seal is a torque of less than 10 N-m.
Claims21
A filter cartridge comprising:
- (a) a housing having a surrounding wall defining an interior volume;
- the housing having an open mouth in communication with the interior volume and a bottom opposite of the mouth;
- the surrounding wall having an interior surface in communication with the interior volume and an opposite exterior surface;
- (i) a central longitudinal axis passes through the cartridge as the axis extends through the open mouth and housing bottom;
- (b) a filter media construction operably oriented in the interior volume of the housing;
- and
- (c) a sleeve against the exterior surface of the surrounding wall;
- the sleeve having an inner portion and an opposite exterior portion, the inner portion being oriented against the exterior surface of the surrounding wall;
- the sleeve including,
- (i) opposite first and second ends, the first end being adjacent the open mouth of the housing;
- (ii) a seal holder recess along the exterior portion and a housing seal member being held in the seal holder recess;
- (A) a joint being defined at an intersection between a line tangent to a lowest point of the seal member, when the cartridge is oriented with the mouth as uppermost, and a line tangent to a most radially inward portion of the seal member;
- (iii) a threaded section in the exterior portion of the sleeve between the second end and the seal holder recess;
- and
- (d) the housing seal member having a sealing compression region;
- the sealing compression region in cross-section being defined by a compression region line;
- (i) a first line perpendicular to the compression region line passes through the joint and through more than one point of the housing seal member;
- and wherein the first line is not perpendicular to the central longitudinal axis and is not parallel to the central longitudinal axis.
15 more elements
A filter assembly comprising:
- (a) a filter head having an inlet arrangement, an outlet arrangement, and an outer wall surrounding a cartridge-receiving interior;
- the outer wall having an end rim, a threaded region oriented toward the cartridge-receiving interior adjacent to the end rim, and a ramp;
- and
- (i) the ramp having an inclined surface at an angle measured from the outer wall as the ramp extends from the threaded region in a direction away from the end rim;
- the angle being between 5 and 45 degrees;
- (b) a filter cartridge removably attached to the filter head;
- the filter cartridge including a housing, a filter media construction operably oriented in an interior volume of the housing, and a sleeve surrounding and against the housing;
- (i) the sleeve having a threaded section mateably engaging the threaded region of the filter head;
- (ii) the sleeve defining a seal holder recess;
- (iii) a seal member being within the seal holder recess and projecting radially outwardly;
- wherein the inclined surface of the ramp on the filter head is compressed against the seal member to form a seal between the filter head and the filter cartridge.
8 more elements
Dependencies are inferred from the claim text.