Cartridge filter end cap

• US 4,537,681 A
• Filed: 07/11/1983
• Issued: 08/27/1985
• Est. Priority Date: 07/11/1983
• Status: Expired due to Term

• Current Assignee: Sta-Rite Industries Incorporated 777 East Wisconsin AVE Milwaukee WIS
• Original Assignee: Sta-Rite Industries LLC (Pentair Plc (Ireland))
• Inventors: Sahachaisere, Somchai, Argiropoulos, George D.
• Primary Examiner(s): Fisher, Richard V.
• Assistant Examiner(s): Millard, Wanda L.
• Application Number:
  US06/512,223
• Time in Patent Office: 778 Days
• Field of Search: 210/443, 210/445, 210/453, 210/455, 210/457, 210/458, 210/493.1, 210/493.2, 210/493.5, 210/438, 210/315, 210/316, 210/317, 210/451, 210/459, 210/498, 210/295 , 210/338, 210/440, 210/444, 210/497.01, 55/499
• US Class Current: 210/317
• CPC Class Codes: B01D 29/15 arranged for inward flow filtration
• CPC Class Codes: B01D 29/23 arranged for outward flow filtration
• CPC Class Codes: B01D 29/54 arranged concentrically or coaxially
• CPC Class Codes: B01D 29/902 containing fixed liquid displacement elements or cores

Abstract

A cartridge fluid filter includes a housing within which are positioned annular, concentrically mounted filter elements that are held together in relative position by first and second end caps to define a gap between the filter elements. A filter core is positioned within the gap that communicates with an outlet defined in the first end cap. An annular reinforcing disc is mounted in the first end cap to support the end cap around the outlet.

Claims

1. A fluid filter assembly, comprising:

a housing including means defining an inlet and an outlet,

a fluid filter cartridge mounted in said housing, said cartridge including first and second end caps, first and second tubular filter media concentrically mounted between said first and second end caps, said first and second filter media spaced apart to define a gap therebetween,

said first end cap including means defining an outlet in fluid communication with said housing outlet, said outlet in said end cap being in alignment with said gap, and

a reinforcing member in said first end cap surrounding said outlet in said first end cap, said reinforcing member including first and second inclined ends, wherein said first end cap outlet is annular, said reinforcing member is annular and includes means defining a plurality of openings in fluid communication with said outlet in said first end cap, and radial rib members on said reinforcing member adjacent each said opening, a space defined between adjacent rib members, at least a portion of said first and second filter media located in said space.

2. An end cap for a fluid filter cartridge mounted in a filter housing with means defining an inlet and outlet, said fluid filter cartridge including first and second tubular filter media concentrically mounted on said end cap and spaced apart to define a gap, a fluid carrier positioned in said gap, said end cap comprising,

a body of synthetic polymer or elastomeric molding compound of varied hardness with a fluid outlet therein,

a planar, circular disc embedded in said body,

at least one slot in said disc overlying said fluid carrier and said outlet,

at least one support rib in said disc adjacent said slot, said rib extends outwardly from said planar disc, and a second support rib, said slot including first and second ends, said first rib mounted in said disc adjacent said first end of said slot, said second rib mounted in said disc adjacent said second end of said slot, each said first and second rib including first and second inclined ends, said inclined ends engaging and supporting said fluid carrier.

3. A fluid filter cartridge assembly, comprising:

an outer annular filter element,

an inner annular filter element concentric and inside said outer element,

first and second end caps secured to the inner and outer filter elements,

said inner and outer filter elements mounted on said first and second end caps to define a gap therebetween,

a filter core mounted in said gap between said inner and outer filter elements,

at least one means defining an outlet aperture, in said first end cap adjacent to and in fluid communication with said filter core, and

an annular support disc in said first end cap, said disc including upper and, lower planar surfaces, and including at least one means defining an opening adjacent said outlet aperture, said opening aligned with said filter core, and means on said disc for reinforcing said disc, said reinforcing means defined on and extending outwardly from said upper planar surface, said filter core positioned on said reinforcing means said opening in said support disc is annular with first and second ends and said reinforcing means includes radial ribs adjacent said first and second ends of said opening.

4. A fluid filter cartridge assembly, comprising:

an outer annular filter element,

an inner annular filter element concentric and inside said outer element,

first and second end caps secured to the inner and outer filter elements,

said inner and outer filter elements mounted on said first and second end caps to define a gap therebetween,

a filter core mounted in said gap between said inner and outer filter elements,

at least one means defining an outlet aperture in said first end cap adjacent to and in fluid communication with said filter core, and

an annular support disc in said first end cap, said disc including upper and lower planar surfaces, and including at least one means defining an opening adjacent said outlet aperture, said opening aligned with said filter core, and means on said disc for reinforcing said disc, said reinforcing means defined on and extending outwardly from said upper planar surface, said filter core positioned on said reinforcing means, means defining a plurality of openings in said first support disc, said reinforcing means including ribs adjacent each said plurality of openings, said ribs defining a space between adjacent ribs, at least a portion of said inner and outer annular filter elements being located in said spaces.