Garey S Austin

US Patent:

50696955, Dec 3, 1991

Filed:

Apr 15, 1991

Appl. No.:

7/685249

Inventors:

Garey Austin - Muscle Shoals AL

Assignee:

Tennessee Valley Authority - Muscle Shoals AL

International Classification:

B01D 5000

US Classification:

553851

Abstract:

A tent-free technique, system, and apparatus for effecting protection of humans from airborne asbestos and other particulate contamination is disclosed. It comprises a first transparent cowling means operatively associated with drilling means and at least one filtration unit flow connected therewith. The first cowling means comprises two members slidably disposed relative to one another, with the first member thereof being more or less substantially fixed relative to the drilling means housing and the second member adapted to be more or less substantially fixed temporarily to the plane of the material first engaged by the drill bit. A second cowling means, also flow connected to said filtration unit, is operatively associated with the instant apparatus and more or less substantially fixed temporarily to the plane of the material lastly engaged by said drill bit. A third cowling means is operatively associated with sawing means and fixed relative to the housing thereof and adapted for enclosing the saw blade. The cowlings can be made and retrofitted into existing drills and/or saws.

US Patent:

50340417, Jul 23, 1991

Filed:

Jun 26, 1990

Appl. No.:

7/546266

Inventors:

Garey Austin - Muscle Shoals AL

Assignee:

Tennessee Valley Authority - Muscle Shoals AL

International Classification:

B01D 5000

US Classification:

553851

Abstract:

A tent-free technique, system, and apparatus for effecting protection of humans from airborne asbestos and other particulate contamination is disclosed. It comprises a first transparent cowling means operatively associated with drilling means and at least one filtration unit flow connected therewith. The first cowling means comprises two members slidably disposed relative to one another, with the first member thereof being more or less substantially fixed relative to the drilling means housing and the second member adapted to be more or less substantially fixed temporarily to the plane of the material first engaged by the drill bit. A second cowling means, also flow connected to said filtration unit, is operatively associated with the instant apparatus and more or less substantially fixed temporarily to the plane of the material lastly engaged by said drill bit. A third cowling means is operatively associated with sawing means and fixed relative to the housing thereof and adapted for enclosing the saw blade. The cowlings can be made and retrofitted into existing drills and/or saws.