US 4,836,923 A · Cartridge and cover assembly for fluid filters

Abstract

A top-loading filter housing has a spin-on combination cartridge and cover in a unitary assembly. The cartridge is an annular filter medium surrounding a perforated center tube and supported in an imperforate bottom endcap, being joined by potting compound to provide a consolidated structure. An annular seal is retained in a central opening in the endcap and is sized for a sliding fit on a vertical standpipe, centrally supported in the filter housing. The cover portion of the cartridge is a molded, circular, glass-filled nylon plate having a depending peripheral flange threadedly receivable in the open, upper end of the filter housing. The cover includes a central well in which the filter medium and centertube are received, both being secured and sealed by potting compound so that the cover and cartridge may be replaced as an assembly.

Claims10

Dependent claims

Fluid filter apparatus, comprising:

a generally cylindrical filter housing having an open end,
port means for routing fluid into and out of said housing,
a vertical standpipe in said housing in direct fluid communication with one of said port means,
a filter medium of annular configuration for separating out fluid contaminants disposed in surrounding relation of said standpipe, said filter medium having a first axial end and a second axial end,
an imperforate end cap secured to said second end of said filter medium , said end cap including a central opening for accepting said standpipe,
seal means for sealing said end cap and said standpipe, and
an imperforate disposable cover for closing said open end of said housing, said filter media permanently affixed at said first end to said cover and disposable therewith.

4 more elements

Dependencies are inferred from the claim text.

Cartridge and cover assembly for fluid filters

Life of this patent

Cartridge and cover assembly for fluid filters

Life of this patent

Abstract

Claims10