Liquid filter assembly, system and methods
AssigneeDonaldson Company, Inc.
InventorsBradley S. Honermann, John R. Hacker
Life of this patent
Estimating the term…
Abstract
A filter cartridge includes a key ring with at least first and second protrusions to engage a lock-out assembly in a filter head, permitting the cartridge to connect to the filter head. A filter system includes a filter assembly, including a filter cartridge and a cartridge housing, connected to a filter head, in which the filter head includes an adapter assembly with a lock-out mechanism. The lock-out mechanism is unlocked by a key ring on the filter cartridge. A method of installing a filter assembly includes using protrusions on a key ring on a filter cartridge to unlock an adapter assembly in a filter head to allow for connection between the filter assembly and the filter head.
Claims8
A filter cartridge for releasable connection with a filter head;
- the filter cartridge comprising:
- (a) a first end cap defining a first open aperture;
- (i) the first end cap holding a first end cap seal member;
- (ii) the first end cap defining an axially extending neck having an outer radial surface and an inner radial surface;
- (A) the first end cap seal member being held by the axially extending neck on the outer radial surface;
- (b) a key ring within and against the inner radial surface of the neck and circumscribing the first open aperture;
- (c) friction-inducing structure between the key ring and the first end cap including a friction ring and a bump arrangement;
- the friction ring being between an outer radial surface of the key ring and the inner radial surface of the neck;
- (i) the friction inducing structure holding the key ring fixed to the first end cap, and under rotational force, permitting the key ring to move rotationally about a longitudinal axis relative to the first end cap;
- and
- (d) a filter media construction secured to the first end cap.
Dependencies are inferred from the claim text.