Filter pulsation dampening device
AssigneeCaterpillar Inc.
InventorsJeffrey R. Ries, Jon T. Immel, Javier A. Rodriguez
Life of this patent
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Abstract
A filter pulsation dampening device has a replaceable filter element including a plurality of baffles disposed next to each other or a flexible valve that is disposed proximate a baffle.
Claims20
A replaceable filter element that includes at least a partially cylindrical configuration and that defines a longitudinal axis, and a radial direction, the filter element comprising:
- an annular filter media defining a central passage;
- a center tube that is disposed in the central passage of the annular filter media that defines a central reservoir, and the annular filter media surrounds the center tube and the central reservoir;
- a top open end joined to the center tube disposed along the longitudinal axis, the top open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element;
- a bottom open end joined to the center tube opposite the top open end disposed along the longitudinal axis;
- and
- a filter pulsation dampening device including
- a filter element baffle extending longitudinally upwardly from the top open end or from the center tube of the filter element.
A housing bolt for use with a filter element for providing a filter pulse dampening device, the housing bolt comprising:
- an at least partially cylindrical body defining a cylindrical axis and a radial direction, and including
- a head defining a head diameter;
- a shaft portion extending axially from the head, the shaft portion defining a shaft portion diameter that is less than the head diameter, forming a support surface configured to contact a portion of the filter element;
- and
- a first baffle extending from the shaft portion, the first baffle extending axially away from the head and radially away from the shaft portion.
A pulse dampening interface between a filter and a filter base configured to mitigate pulses, the interface comprising:
- a filter element that includes at least partially a cylindrical configuration and that defines a longitudinal axis, and a radial direction, the filter element comprising:
- an annular filter media defining a central passage;
- a center tube that is disposed in the central passage of the annular filter media that defines a central reservoir, and the annular filter media surrounds the center tube and the central reservoir;
- a top open end joined to the center tube disposed along the longitudinal axis, the top open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element;
- and
- a bottom open end joined to the center tube opposite the top open end disposed along the longitudinal axis:
- a housing bolt;
- a base interfacing with the filter element;
- and
- a filter pulsation dampening device;
- wherein the filtration pulsation dampening device includes a first baffle extending from the housing bolt, and a second baffle extending either from the base or the filter element that is disposed proximate to the first baffle, defining a flow passage with a minimum distance between the first baffle and the second baffle.
Dependencies are inferred from the claim text.