Michael J 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:

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.