Michael R Nemcek

US Patent:

7694990, Apr 13, 2010

Filed:

Nov 9, 2005

Appl. No.:

11/270140

Inventors:

Gerold Goertzen - Brunswick OH, US
Michael Nemcek - Avon OH, US

Assignee:

Invacare Corporation - Elyria OH

International Classification:

A61G 5/10

US Classification:

2803041, 2802884, 2803042

Abstract:

A manually-powered wheelchair that includes one or more features that enhance the overall maneuverability and stability of the wheelchair, such as centrally mounted drive-wheels and an anti-tip system. Other embodiments may include at least one of an adjustable anti-tip system that may be selectively located to several locations on the frame; a positive stop device attached to either the mounting bracket, frame, or the anti-tip system for limiting movement of the anti-tip system and the frame relative to each other; a resistance device attached to the frame and the anti-tip system for increasing resistance between the frame and the anti-tip system when the user leans backwards in the wheelchair; a wheel lock system engaging at least one of the drive wheels below the wheel's axis of rotation; and a tilt prevention device for selectively preventing any rotation of the wheelchair frame and anti-tip system relative to each other.

US Patent:

20110038740, Feb 17, 2011

Filed:

Aug 17, 2010

Appl. No.:

12/857844

Inventors:

Gerold Goertzen - Homerville OH, US
Michael R. Nemcek - Avon OH, US
Bradley A. Kushner - Elyria OH, US

Assignee:

Invacare Corporation - Elyria OH

International Classification:

F04B 1/04

US Classification:

417273

Abstract:

A compressor includes a cylinder assembly in a V4 configuration. A crankshaft of the compressor has a main shaft and first and second eccentric bodies. The two eccentric bodies drive four pistons.

US Patent:

57938296, Aug 11, 1998

Filed:

Apr 29, 1996

Appl. No.:

8/639408

Inventors:

Douglas Edward Bacso - Cleveland OH
Michael R. Nemcek - Fairview Park OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

G21C 1100

US Classification:

376292

Abstract:

A protective sleeve includes an outer member and an inner member slidable within the outer member. The outer member has a tubular portion with a first end and a second end, and an attachment assembly is located at the first end of the tubular portion. The outer member further includes a plurality of spring plungers secured to an inner wall of the outer member. The attachment assembly includes a collar and a drip skirt secured to the collar. The attachment assembly is threadedly engaged to the first end of the outer member tubular portion. The inner member includes a first end positioned within the outer member and a second end. At least a portion of the inner member extends from the second end of the outer member. The inner member is movable relative to the outer member. A plurality of spring plungers are secured to an outer wall of the inner member.

US Patent:

20140202461, Jul 24, 2014

Filed:

May 23, 2012

Appl. No.:

14/119192

Inventors:

Gerold Goertzen - Homerville OH, US
Michael R. Nemcek - Avon OH, US
Martin Fabian - Bay Village OH, US
William M. Chambers - Grafton OH, US
Kevin S. Wysocki - Grafton OH, US

Assignee:

Invacare Corporation - Elyria OH

International Classification:

A61M 16/10
A61M 16/20
A61M 16/00

US Classification:

12820226

Abstract:

An oxygen concentration and compression system includes an oxygen concentrator, a boost stage, a compressor, and a portable container. The boost stage receives oxygen enriched gas at a first pressure from the oxygen concentrator. The boost stage includes a pressure increasing device that increases the pressure of the oxygen enriched gas from the first pressure to a second, controlled pressure. The compressor receives the oxygen enriched gas at the second, controlled pressure and compresses the oxygen enriched gas to a third pressure in the portable container for later use by a patient. A patient outlet provides oxygen enriched gas from the oxygen concentrator or the boost stage for use by a patient.