David H Mcfadden

US Patent:

6376817, Apr 23, 2002

Filed:

Oct 24, 2000

Appl. No.:

09/696750

Inventors:

David H. McFadden - Lexington MA
Earl R. Winkelman - Garland TX
John David Gidner - Dallas TX

Assignee:

TurboChef Technologies, Inc. - Dallas TX

International Classification:

H05B 668

US Classification:

219681, 219683, 219400, 219702, 126 21 A

Abstract:

For residential use primarily, a compact quick-cooking convection oven for cooking a food product at least partially by hot gas flow, includes a housing defining (i) a cooking chamber having a top, a bottom and a support means therebetween and spaced above the chamber bottom for receiving and supporting a food product for cooking, and (ii) conduit means for providing gaseous communication outside of the cooking chamber upwardly from the chamber bottom to the chamber top. Associated with the cooking chamber are (i) adjacent the chamber top, directing means for directing gas flow from the conduit means downwardly onto a top of the food product on the support means, and (ii) adjacent the chamber bottom, return means for directing the gas flow from the cooking chamber into the conduit means. Flow means cause gas flow from the directing means via the conduit means. Control means independently vary without human intervention at least one of the effective volumetric flow rate of the gas flow into the cooking chamber and the temperature of the gas flow into the cooking chamber.

US Patent:

6406522, Jun 18, 2002

Filed:

Jun 6, 2000

Appl. No.:

09/588510

Inventors:

David H. McFadden - Lexington MA
Paul Lukas Brillhart - Park Ridge IL

Assignee:

Gas Research Institute - Chicago IL

International Classification:

B01D 5306

US Classification:

95113, 96125, 96150

Abstract:

An apparatus and system, as well as corresponding methods of operation and treatment of air, are provided which make use of a rotatable desiccant bed such as to permit the effective and selective alternative reduction of humidity of incoming air or energy recovery from air to be discarded.

US Patent:

6874495, Apr 5, 2005

Filed:

Jul 7, 2003

Appl. No.:

10/614479

Inventors:

David H McFadden - Lexington MA, US

International Classification:

F24C015/32

US Classification:

126 21A, 126273 R, 219400

Abstract:

A speed cooking ovens is disclosed comprising a cooking cavity, thermal heating source, air movement and directing means, air flow control means, an air delivery means, and a vent assembly. The speed cooking oven may additionally utilize air flow control mechanisms and be practiced as a single rack speed cooking oven or a multi rack speed cooking oven. Hot gas is circulated to and from the oven cavity via air delivery means, such that turbulently mixed glancing, conflicting and colliding air flows mix at and about the surfaces of the food product. The turbulently mixed air flows are spatially averaged over the surface area of the food product producing high heat transfer and moisture removal rates, thereby optimizing speed cooking of the food product.

US Patent:

7055518, Jun 6, 2006

Filed:

Jul 7, 2003

Appl. No.:

10/614710

Inventors:

David H. McFadden - Lexington MA, US
David A. Bolton - Southlake TX, US

Assignee:

Turbochef Technologies, Inc. - Dallas TX

International Classification:

F24C 15/32

US Classification:

126 21A, 126273 R, 219400

Abstract:

A speed cooking oven is disclosed comprising a cooking cavity, a controller, thermal heating source, blower assembly, air directing means and a vent assembly. Hot air is circulated by the blower motor assembly into the oven cavity where the hot air is directed in a manner wherein a conflicting, colliding turbulent gas flow is directed at a food product providing for the rapid cooking of food products.

US Patent:

7507938, Mar 24, 2009

Filed:

Oct 21, 2004

Appl. No.:

10/576847

Inventors:

David McFadden - Lexington MA, US

Assignee:

Turbochef Technologies, Inc. - Atlanta GA

International Classification:

H05B 6/70
H05B 6/80

US Classification:

219681, 219696, 219746, 219751, 219400

Abstract:

A speed cooking oven () has a cooking cavity (), and a microwave waveguide () with slotted antenna () which efficiently emits electromagnetic energy () to assist with the speed cooking of food product ().

US Patent:

7836874, Nov 23, 2010

Filed:

Jul 7, 2003

Appl. No.:

10/614268

Inventors:

David H McFadden - Lexington MA, US

Assignee:

Turbochef Technologies, Inc. - Dallas TX

International Classification:

A21B 1/26

US Classification:

126 21A, 126273 R, 219400

Abstract:

A speed cooking oven is disclosed comprising a cooking cavity, a controller, thermal heating source, blower assembly, air directing means and a vent assembly. Hot air is circulated by the blower motor assembly into the oven cavity where the hot air is directed in a manner wherein a conflicting, colliding turbulent gas flow is directed at a food product providing for the rapid cooking of food products.

US Patent:

7836875, Nov 23, 2010

Filed:

Mar 29, 2006

Appl. No.:

11/392050

Inventors:

David H. McFadden - Lexington MA, US
David A. Bolton - Southlake TX, US

Assignee:

Turbochef Technologies, Inc. - Dallas TX

International Classification:

A21B 1/26

US Classification:

126 21A, 126273 R, 219400

Abstract:

A speed cooking oven is disclosed comprising a cooking cavity, a controller, thermal heating source, blower assembly, air directing means and a vent assembly. Hot air is circulated by the blower motor assembly into the oven cavity where the hot air is directed in a manner wherein a conflicting, colliding turbulent gas flow is directed at a food product providing for the rapid cooking of food products.

US Patent:

7886658, Feb 15, 2011

Filed:

Oct 30, 2007

Appl. No.:

11/928084

Inventors:

David H. McFadden - Lexington MA, US
David A. Bolton - Southlake TX, US

Assignee:

Turbochef Technologies, Inc. - Atlanta GA

International Classification:

H05B 6/70
H05B 6/80
A21B 1/26

US Classification:

99476, 99480, 126 21 A, 126273 R, 219681, 219696, 219746, 219400

Abstract:

A speed cooking with improved gas flow by-pass mechanism for radiant cooking mode. A speed cooking oven with radiant mode is disclosed comprising a cooking cavity, a controller, thermal heating source, blower assembly, air directing means, a vent assembly and a single door gas by-pass system. Hot gas is circulated by the blower motor assembly into the oven cavity where the hot air is directed in a manner wherein a conflicting, colliding turbulent gas flow is directed at a food product providing for the rapid cooking of food products. Alternatively, a single movable door may be utilized that operates between an open position wherein gas flow exhausts from the top of the oven or in the closed position wherein gas is diverted through a conduit and back to the blower mechanism. Gas may therefore flow into the oven cooking cavity or may be diverted around the cooking cavity and maintained at the same temperature, lower temperature or elevated temperature as compared to the cooking cavity without having a direct effect on the food product being cooked.