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Class 219/773 - Sheet (e.g., board, etc.)


Subclass of Class 219 - Electric heating
Definition: Subject matter wherein the dielectric heating application
No. of patents: 29
Last issue date: 06/05/2007


NumberTitleIssue Date
7226334Apparatus for making high buffer gas pressure ceramic arc tube
An apparatus for making a ceramic arc tube for high intensity discharge (HID) lighting applications is provided wherein the arc tube contains a high buffer gas pressure and RF induction heating is used to melt a frit material to form a hermetic seal. ...
06/05/2007
7119314Radio frequency and microwave radiation used in conjunction with convective thermal heating to expedite curing of an imprinted material
A system and method is provided in which a radio frequency transmitter and/or a microwave frequency transmitter applies radio and/or microwave frequency energy, respectively, to an imprinted material to cure the imprinted material. In some embodiments, an oven may b...
10/10/2006
7066731Method for conditioning/heat treatment
A method for heat treatment of printing plates includes arranging a plurality of printing plates into a stack, interspersing a plurality of thermally conductive plates at a plurality of levels in the stack, and placing the stack of plurality of printing plates with ...
06/27/2006
6617557Apparatus for RF active compositions used in adhesion, bonding, and coating
An RF heating system. In one aspect of the present invention, the RF heating system includes a first elongated electrode connected to a first node within an impedance matching circuit and a second elongated electrode connected to a second node within the ...
09/09/2003
6359273Method and apparatus for producing a unified laminated body by dielectric heating and method for dielectrically preheating a laminate structure for the unified laminated body
A method of preheating a polymer plate by dielectric heating by applying a radio frequency voltage to a laminate in the direction of its lamination through electrodes; a method of producing a laminate, comprising dielectric heating a polymer plate by appl...
03/19/2002
6225612Electrode structure for dielectric heating
A dielectric heating or drying system incorporating an electrode structure, which is provided with wings that projects toward the opposite electrode along each side of a planar central portion of the electrode and function to improve electric field unifor...
05/01/2001
6184510Cakeboard and methods of manufacturing and use
A cakeboard useful for direct transfer of a cake from the oven, for finishing and serving, without the need for a cooling rack. The cakeboard can have a first layer of corrugated cardboard and a second layer of PET. The first layer can have its top liner ...
02/06/2001
6124584Moisture measurement control of wood in radio frequency dielectric processes
A method of determining the moisture content of charge of wood having a moisture content below fiber saturation and being subjected to a Radio Frequency dielectric heating process to the degree required to control the process (e.g., terminate drying) by m...
09/26/2000
5387782Apparatus for smoothing paper webs
The invention relates to an apparatus for the generation of smoothness in paper. The paper (1) is thereby supplied to the rolls (2) of the smoothing mechanism with a moisture distribution which is characterized in that the moisture content in the inner la...
02/07/1995
5300749Method and apparatus for the reduction of distance-dependent voltage increase of parallel high-frequency electrodes
The invention concerns a method and equipment for the compensation of voltage increase in electrodes of a apparatus used to process dielectric materials. In the apparatus the electrodes are arranged parallel, at a constant distance from each other across ...
04/05/1994
5290490Method and apparatus for differentially heating and thermoforming a polymer sheet
A method and apparatus for thermoforming 3-dimensional articles of chosen wall thickness dimensions from a polar polymer sheet. The polymer sheet is dielectrically heated, the heating being controlled to impress a predetermined thermal pattern on the shee...
03/01/1994
5245154Method and apparatus for heating a wood material
A wood material, into which a synthetic resin solution or the like is injected, is held from its surface and back by heating plates in a closed container. The inside of the heating plate is provided with a heating medium passageway through which a heating...
09/14/1993
5175406Resonant high-frequency or micro-wave applicator for thermal treatment of continuously moving flat material
A resonant high-frequency or micro-wave applicator for the thermal treatment of a flat material is disclosed. This applicator comprises a flat capacitor between the plates of which the material moves and an inductor which is constituted by a metal band ex...
12/29/1992
5162629Radio-frequency veneer dryer
A continuous radio frequency dryer that includes a dryer housing and a conveyor extending through the housing. The conveyor is made up of a series of conveyor rolls spaced from each other, and a pressure roll is above and parallel to each conveyor roll. P...
11/10/1992
5116682Process for producing anti-wicking polyester yarn and product produced thereby
A process for producing anti-wicking and water repellant polyester yarns at high processing speeds. Polyester yarn or other heat stable yarn is continuously fed to a coating station, the yarn is then coated with a fluorocarbon polymer emulsion or dispersi...
05/26/1992
5074055Apparatus for heating a dielectric web or sheet material or for decreasing its moisture content
The invention concerns equipment for drying of a web material (1) or for equalization of its moisture content by means of induction heating. The web is passed between the rolls in two or more pairs of rolls (2,3; 4,5; 6,7). High-frequency energy is passed...
12/24/1991
5024004Radio frequency air float bar
A radio frequency air float bar for use in floating and drying a continuous planar web of a material in a dryer. Radio frequency energy in an air bar accelerates drying, or evaporation of solvents, or curing of planar web material passing in proximity to ...
06/18/1991
4873407Dielectric cross machine moisture control
In a method for applying heat to a web, the web is subjected to dielectric heating in discrete segments, arranged transverse to the web, by modules containing pairs of electrodes. The heat thus generated can be used to vary the moisture and/or temperature...
10/10/1989
4845329Moisture removal from visual glass surfaces by dielectric heating
In an automotive vehicle having a visual glass pane subject to collecting vision obscuring moisture in the form of ice, frost, mist, fog, etc., apparatus is provided for removing the collected moisture. Specifically, the apparatus comprises a transparent ...
07/04/1989
4499358Driving circuit for radio frequency dryer
A driving circuit for supplying a radio frequency electrical signal to the applicator section of a radio frequency dryer includes a voltage controlled oscillator, supplying a signal to an amplifier circuit. The amplifier circuit supplies an amplified sign...
02/12/1985
4353355Solar energy collectors
An improved method of making a solar energy collector is disclosed. The method involves fusing a collector panel to headers using a high frequency magnetic field. End fitments are also fused to the headers. Other improvements in solar energy collectors pe...
10/12/1982
4316709Continuous belt press with capacitative heating means
A continuously operating heat-treatment press in which a continuously advanced layer (7) of material under pressure, for example including glue-coated wood chips, is heated dielectrically. The press is of the kind which comprises at least one endless, con...
02/23/1982
4296555Methods and apparatus for conditioning plywood veneer with high frequency radio energy
There are disclosed in the present application, methods and apparatus for reprocessing sheets of veneer which have received an unsatisfactory first drying treatment resulting in wide variations in the percentage of moisture in various parts of a given she...
10/27/1981
4258240Method and apparatus for radio frequency drying of lumber
In a method of drying boards by radio-frequency heating a stack of boards is passed between live and earthed electrodes. The connections to the electrodes are periodically reversed so that each is alternately live and earthed; this increases the uniformit...
03/24/1981
4242805Method and apparatus for drying a thick wet layer coated on one face of a cardboard sheet
A method for drying a thick wet layer coated on one face of a cardboard sheet, the method being, of the type in which the coated cardboard sheet is fed continuously and a high frequency electric field is applied thereto in such manner that the lines of fo...
01/06/1981
4156805Machine for heat treating objects of great length
The machine comprises two electrodes connected to a high frequency electric current generator and adapted to subject the object to be heated to an electric field. The first electrode comprises a table provided with at least one opening through which proje...
05/29/1979
4135957Method for sealing plastic sheets
A method and apparatus are disclosed for sealing flexible plastic sheets together. The method is performed by use of a die wherein a pair of longitudinal grooves are provided at the edge of the sealing area. The die is connected to a source of radio frequ...
01/23/1979
4124430Electronic sealing apparatus
An apparatus for use in sealing layers of thermoplastic material together from one side of the layers includes a heat sealing electrode having a first conductive element mounted on a support and adapted to be connected to a source of high frequency energy...
11/07/1978
4083745Apparatus for promoting the setting of adhesive on stacks of sheets in bookbinding machines
A bookbinding machine wherein stacks of signatures are transported by the holders of an endless conveyor which moves the stacks seriatim along a paster. The paster coats the backs of successive stacks with wet adhesive and the stacks are thereupon transpo...
04/11/1978
 
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