Joe E Madsen

US Patent:

8066480, Nov 29, 2011

Filed:

Nov 7, 2008

Appl. No.:

12/291294

Inventors:

Joe E Madsen - Leominster MA, US

Assignee:

AirMotion Sciences, Inc. - Holliston MA

International Classification:

F04D 29/18
F04D 29/26
B63H 3/00
B64C 11/00
B64C 27/00
F03B 7/00

US Classification:

416 38, 416 5, 416 32, 416 36, 416162, 416155, 310 92

Abstract:

A high volume low speed (HVLS) fan provides improved air circulation and thermal control in a building by incorporating composite fan blades pivotable to both positive and negative pitch angles. The blades are molded of polymer material over a metal tube core for strength and ease of attachment to the fan hub, and have a symmetrical airfoil shape to produce an efficient bi-directional conical airflow. The fan includes a control unit providing manual and automated intelligent control over blade angle and rotational speed, as well as startup with approximately zero blade angle for more economical power consumption and less motor wear. The fan structure and mounting system allows the fan to be installed at an optimal height inside a variety of buildings to provide increased efficiency of air destratification and air mixing. An array of multiple HVLS fans with alternating directions of airflow can further increase efficiency of air movement.

US Patent:

D3587894, May 30, 1995

Filed:

Jul 16, 1993

Appl. No.:

D/010758

Inventors:

Mark W. Wheeler - Littleton MA
Joe E. Madsen - Leominster MA

Assignee:

Moduform, Inc. - Fitchburg MA

US Classification:

D12128

US Patent:

51041839, Apr 14, 1992

Filed:

Jan 14, 1991

Appl. No.:

7/640710

Inventors:

Joe E. Madsen - Leominster MA
Mark W. Wheeler - Marblehead MA

Assignee:

Moduform, Inc. - Fitchburg MA

International Classification:

A47B 3900

US Classification:

297142

Abstract:

A rotatable seat with a sealed rotating member for use in a prison.