Karl Dean Metzger

US Patent:

6363934, Apr 2, 2002

Filed:

Sep 3, 1998

Appl. No.:

09/146673

Inventors:

Karl Metzger - Lenexa KS

Assignee:

Parmalee Industries, Inc. - Lenexa KS

International Classification:

A62B 1808

US Classification:

12820616, 12820527, 12820529, 12820617, 55DIG 33, 55DIG 35

Abstract:

The present invention is a protective spark cover for covering the exterior face of a filter for use with a respirator or the like. During metal welding, smelting and cutting operations and similar activities creating sparks, splatter and the like, exposed respirator filters may be perforated and made unusable. The present invention protective spark cover provides a removable cover to protect such filter elements from welding and spark damage and other similar mechanical damage. The invention is essentially a screen cover to protect the filter element and a frame to hold the screen in place over the filter.

US Patent:

60559837, May 2, 2000

Filed:

Dec 29, 1997

Appl. No.:

8/998921

Inventors:

Karl Metzger - Lenexa KS

Assignee:

Parmelee Industries - Lenexa KS

International Classification:

A62B 700

US Classification:

12820617

Abstract:

A novel filtration device having a substantially rigid frame comprised of an outer peripheral band connected by a plurality of spacers to an inner breather tube, wherein filter pads are secured over both sides of the frame and separated by the spacers to form an enclosed central air pocket accessible only through the breather tube. The breather tube is adapted to be detachably connected to an inlet port in a respirator face mask so as to provide a closed channel for air flow from the central air pocket to the interior of the face mask.

US Patent:

D4148614, Oct 5, 1999

Filed:

Sep 2, 1998

Appl. No.:

D/093045

Inventors:

Karl Metzger - Lenexa KS

International Classification:

2404

US Classification:

D24110

US Patent:

57326959, Mar 31, 1998

Filed:

Mar 11, 1997

Appl. No.:

8/814347

Inventors:

Karl Metzger - Lenexa KS

Assignee:

Parmelee Industries - Leneza KS

International Classification:

A62B 700

US Classification:

12820612

Abstract:

A novel filtration device having a substantially rigid frame comprised of an outer peripheral band connected by a plurality of spacers to an inner breather tube, wherein filter pads are secured over both sides of the frame and separated by the spacers to form an enclosed central air pocket accessible only through the breather tube. The breather tube is adapted to be detachably connected to an inlet port in a respirator face mask so as to provide a closed channel for air flow from the central air pocket to the interior of the face mask.