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US 5,290,445 AGranted
Filtering apparatus
AssigneePall Corporation
InventorRoger A. Buttery
Life of this patent
Estimating the term…
Abstract
The disclosure describes a filtering apparatus and a method for manufacturing a filtering apparatus comprising a housing and a filter arrangement disposed within the housing. The housing may have first and second identical body portions. The filter arrangement, which may include an end cap and a filter element, may be secured within the housing solely by mechanical compression between the first and second body portions.
Claims23
An apparatus for filtering a fluid comprising:
- a housing having first and second openings and defining a fluid flow path between the first and second openings, the housing further having first and second identical body portions joined to one another and a plurality of ribs provided within each body portion, and
- a filter arrangement disposed within the housing in the fluid flow path and including a filter element having a first surface communicating with the first opening and a second surface communicating with the second opening, the filter arrangement being secured within the housing solely by mechanical compression between the first and second body portions and the ribs of at least one body portion engaging the filter arrangement to position the filter arrangement within the housing.
An apparatus for filtering a fluid comprising:
- a housing having an inlet and an outlet and defining a fluid flow path between the inlet and the outlet, the housing further having first and second opposing surfaces disposed on the interior of the housing, a seal edge projecting inwardly from the second surface, and a plurality of ribs provided within the housing;
- an end cap disposed within the housing near the first surface of the housing and having a projecting seal edge opposing the seal edge of the housing;
- and
- a filter element disposed in the fluid flow path within the housing, the filter element having an upstream surface communicating with the inlet, a downstream surface communicating with the outlet, and first and second ends, the first end of the filter element abutting the end cap with the seal edge of the end cap protruding into the first end of the filter element, the second end of the filter element abutting the second surface of the housing with the seal edge of the housing protruding into the second end of the filter element, and the ribs engaging the filter element to position the filter element within the housing.
1 more element
An apparatus for filtering a fluid comprising:
- a substantially cylindrical housing including a first end having an inlet, a second end having an outlet, and a side wall and defining a fluid flow path between the inlet and the outlet, the housing comprising first and second identical body portions joined to one another circumferentially along the side wall, each body portion including one end of the housing, an annular seal edge directed axially inwardly from the end of the housing, and a plurality of ribs, each rib having a first surface facing substantially radially inwardly and a second surface facing substantially axially inwardly with respect to the housing;
- and
- a filter arrangement disposed in the fluid flow path within the housing and secured within the housing solely by mechanical compression between the first and second body portions, the filter arrangement including:
- a hollow, generally cylindrical, microfibrous filter element having first and second porous ends, an outer surface communicating with the inlet, and an inner surface communicating with the outlet, the filter element being disposed coaxially within the housing with the second end of the filter element abutting the second end of the housing, the seal edge of the second end of the housing protruding into the second end of the filter element, and the second end of the filter element being centered by the first surfaces of the ribs of the second end of the housing, and
- a blind end cap capping the first end of the filter element and having a seal edge protruding into the first end of the filter element, the end cap being disposed coaxially within the housing with the second surfaces of the ribs of the first end of the housing abutting the end cap.
2 more elements
A method for manufacturing a filtering apparatus comprising the steps of:
- bringing the first end of a filter element into contact with a first body portion having a seal edge projecting toward the first end of the filter element;
- positioning the filter element within the first body portion by engaging the filter element with a plurality of ribs attached to the first body portion;
- bringing a second end of the filter element into contact with an end cap having a seal edge projecting toward the second end of the filter element;
- joining the first body portion to a second body portion to form a housing;
- driving the seal edges into the respective ends of the filter element;
- and
- securing the end cap and the filter within the housings solely by mechanical compression between the body portions.
4 more elements
A method for manufacturing a filtering apparatus comprising the steps of:
- placing a first body portion with a join face facing upwardly into the lower rest of a hot plate welding machine;
- bringing the first end of a filter element into contact with the first body portion, the first body portion having a seal edge projecting toward the first end of the filter element;
- bringing the second end of the filter element into contact with an end cap having a seal edge projecting toward the second end of filter element;
- joining the first body portion to a second body portion to form a housing, including bringing the join faces into contact with the hot plate for a predetermined time;
- and
- driving the seal edges into the respective ends of the filter element and securing the end cap and the filter element within the housing solely by mechanical compression between the body portions.
3 more elements
A method for manufacturing a filtering apparatus comprising the steps of:
- bringing a first end of a filter element into contact with a first body portion having a seal edge projecting toward the first end of the filter element;
- bringing a second end of the filter element into contact with an end cap having a seal edge projecting toward the second end of the filter element;
- positioning the end cap within a second body portion by engaging the end cap with a plurality of ribs attached to the second body portion;
- driving the seal edges into the respective ends of the filter element;
- joining the first body portion to the second body portion to form a housing;
- and
- securing the end cap and the filter element within the housing solely by mechanical compression between the body portions.
4 more elements
Dependencies are inferred from the claim text.