Two stage engine air breather filter

Patent · Tue Aug 19 00:00:00 EDT 1986

OSTI ID:5284440

Schuman, C F

1. An air filter for filtering particulate matter from an airstream comprising: a cylindrical canister having an open upper end and a closed lower end forming a base; an unfiltered air inlet formed in the side wall of the canister; an air deflector disposed within the canister for directing the flow of air entering the canister via the unfiltered air inlet into a cyclonic path to swirl around the interior of the canister; a plurality of spaced collector baffles attached to the inner lower wall of the canister; a rigid cone-shaped screen supported in an inverted position by means in the open end of the canister; a cone-shaped primary filter element disposed over the exterior surface of the cone-shaped screen; a flat circular secondary filter pad covering the open base of the cone-shaped primary filter element; and a detachable cover member covering the open end of the canister and having a filtered air outlet formed therein.

• Assignee: NOV; NOV-85-020945; EDB-86-165594
• Patent Number(s): US 4606743
• OSTI ID: 5284440
• Resource Relation: Patent File Date: Filed date 28 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
54 ENVIRONMENTAL SCIENCES
ENGINES
AIR FILTERS
AIR POLLUTION CONTROL
PARTICULATES
FILTRATION
AIR FLOW
BAFFLES
CONTAINERS
VORTEX FLOW
CONTROL
CONTROL EQUIPMENT
EQUIPMENT
FILTERS
FLOW REGULATORS
FLUID FLOW
GAS FLOW
PARTICLES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SEPARATION PROCESSES
330705* - Emission Control- Particulates
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)