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US4639577A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrodes for enhanced heat and mass transfer apparatus

Assignee: HARRY HILL ASSOCIATES THREE PARKWAY MONTGOMERY MCCRACKEN WALKER & RHOADS ATTN JOHN S ESTEY ESQ PHILA PA 19103 A CORP OF PA
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Filing: 1985-07-03
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Granted: 1987-01-27
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Expires: 2005-07-03
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Abstract

Abstract In an electrical oven at least one corona generation electrode is provided to enhance heat and mass transfer. Food being cooked in the oven provides a second electrode which is normally supported on insulating support structure and provided with high potential through the use of a probe inserted into the food. A high voltage potential supply and constant current high voltage control are connected between the two electrodes. The corona generating electrode has a plurality of corona discharge generators with pointed or small diameter free ends fixed at their opposite ends to a common conductive base. The corona discharge generators are flexible and have current conducting capability and are connected to the conductive base so as to yield under pressure but to return to operative position upon imposition of corona producing potential. The corona discharge generators are preferably metallic foil, insulator sheet covered with foil or conductive fibers. It is desirable to provide internal resistance within the individual corona discharge generators by making them of somewhat resistive material, tipping them with resistive material or otherwise providing series resistance which will make it possible then for these flexible electrodes to be self-adjusting. Individual self-adjusting corona discharge generators withdraw from the other electrode to suppress an arc or various ones of them selectively withdraw to provide a profile conforming to the profile of the food constituting the other electrode even as it changes in the course of cooking.

Inventors

  • 👤 Eugene J. Sturdevant

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 17:31
CPC Classifications
H; H01; H01T; H01T19/00; H01T19/04

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 130 words
An improved corona generation electrode configuration for use in a device for enhancing heat and mass transfer, employing corona discharge, wherein the corona generation electrode and another body providing a second electrode are able to produce corona discharges between them, comprising providing said corona generation electrode with a plurality of corona discharge generators with pointed or small diameter free ends fixed at their opposite ends to a common conductive base wherein the corona generation electrode employs a plurality of flexible self-adjusting corona discharge generators having at least a current conducting capability and each of which is connected to the conductive base so as to yield under mechanical pressure but return to operative position upon imposition of a corona producing potential and to individually yield to varying electrostatic forces during operation.
Claim 2
Dependent Claim 130 words
An improved corona generation electrode configuration for use in a device for enhancing heat and mass transfer, employing corona discharge, wherein the corona generation electrode and another body providing a second electrode are able to produce corona discharges between them, comprising providing said corona generation electrode with a plurality of corona discharge generators with pointed or small diameter free ends fixed at their opposite ends to a common conductive base wherein the corona generation electrode employs a plurality of flexible self-adjusting corona discharge generators having at least a current conducting capability and each of which is connected to the conductive base so as to yield under mechanical pressure but return to operative position upon imposition of a corona producing potential and to individually yield to varying electrostatic forces during operation.
Claim 3
Dependent Claim 24 words
The corona generation electrode of claim 1 in which the corona discharge generators consist of electrode strips of conductive sheet material with pointed ends.
Claim 4
Dependent Claim 26 words
The corona generation electrode of claim 2 in which each of the corona generation electrodes is fixed to the common conductive base by a separate junction.
Claim 5
Dependent Claim 28 words
The corona generation electrode of claim 2 in which the corona discharge generators are formed by cutting them out of the common conductive sheet which provides the base.
Claim 6
Dependent Claim 19 words
The corona generation electrode of claim 4 in which the common conductive sheet is a metal tipped resistive material.
Claim 7
Dependent Claim 16 words
The corona generation electrode of claim 1 in which the corona discharge generators are flexible fibers.
Claim 8
Dependent Claim 23 words
The corona generating electrode of claims 1, 2, 5 or 6 in which the flexible corona discharge generators are tipped with resistive material.
Claim 9
Dependent Claim 21 words
The corona generation electrode of claim 6 in which the flexible fibers are attached to the base in a regular pattern.
Claim 10
Dependent Claim 24 words
The corona generation electrode of claim 6 in which the flexible fibers are attached as tufts or groups in a pattern to the base.
Claim 11
Dependent Claim 17 words
The corona generation electrode of claim 6 in which the flexible fibers are metal tipped resistive members.
Claim 12
Dependent Claim 21 words
The corona generation electrode of claim 1 in which the flexible corona discharge generators are formed of resistance particle loaded film.
Claim 13
Dependent Claim 21 words
The corona generating electrode of claim 1 in which the flexible corona discharge generators are formed of resistance particle loaded fibers.
Claim 14
Dependent Claim 25 words
The corona generating electrode of claims 1, 2, 5 or 6 in which the flexible corona discharge generators are tipped with conductive material loaded epoxies.
Claim 15
Dependent Claim 46 words
In an oven including a corona generating electrode configuration in accordance with claim 1, probe means to be inserted into food and high voltage generation means connected between them and in which the flexible corona discharge generators are provided with sufficient resistance as to be self-adjusting.
Claim 16
Dependent Claim 37 words
The system in accordance with claim 14 in which the electrodes will self adjust upon the occurrence of an arc such that the flexible corona discharge generators will withdraw from the food surface to suppress the arc.
Claim 17
Dependent Claim 52 words
The system of claim 14 in which the plurality of flexible corona discharge generators will selectively adjust their spacing from the surface of food or metal containers providing part of the other electrode in order to provide essentially uniform spacing between the tips of the corona discharge generators and the other electrode.

References Cited (Backward Citations)

US940430A Cited
US832767A Cited
US1735494A Cited
US1782340A Cited
US1841323A Cited
US2503224A Cited
US2866923A Cited
US3551743A Cited
US4344104A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-01-26 1990-07-28 1991-01-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-01-26 1994-07-28 1995-01-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-01-26 1998-07-28 1999-01-27 $7700.00 Window Closed / Lapsed

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