Having Pressure Reducing Means Patents (Class 34/257)
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Patent number: 11181319Abstract: A sawn wood drying system, which allows to take advantage of the heat contained in the dry wood that leaves the system to preheat the wet and cold wood that enters the system, the system comprising: a heating chamber, a drying chamber and a cooling chamber, sequentially arranged, and a transport path that allows the transfer of sawn wood through these three chambers; a first air circulation system, which provides a first high temperature air flow inside the drying chamber; and a second air circulation system that provides a second air flow, independent of the first air flow, which allows the heating chamber to be in fluid communication with the cooling chamber by means of external chambers or ducts connecting both chambers.Type: GrantFiled: January 9, 2020Date of Patent: November 23, 2021Assignee: NEUMANN S.A.Inventor: Rodolfo Jorge Neumann Roeschmann
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Patent number: 11066778Abstract: The present application encompasses methods and apparatus for heating a load such as clothes immersed in a medium such as water during a heating period. A method embodiment of the present invention comprises heating the load and medium within an enclosure by subjecting said load and medium to heated air originated from a conventional energy source; and applying heat to said load and medium within the enclosure via an AC electrical field, embodied as a capacitor, originated from an RF power source.Type: GrantFiled: November 25, 2019Date of Patent: July 20, 2021Assignees: Cool Dry, Inc., LG Electronics Inc.Inventors: Pablo E. D'Anna, David S. Wisherd, Michael Andrew Wohl, Edward Herman Decker, Gary Lynn Cox
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Patent number: 9927173Abstract: A single-pass lumber drying kiln having a main drying chamber, a heat source to provide heat to the main drying chamber, a pre-heating chamber connected to a receiving side of the main drying chamber, the pre-heating chamber having a moisture collector and a kiln entrance, a conditioning chamber connect to an exit of the main drying chamber, the conditioning chamber having a moisture delivery system and a kiln exit, and fans arranged adjacent the pre-heating, conditioning, and the main drying chamber, wherein the fans adjacent the main-drying chamber and the conditioning chamber are synchronized together in a first set and the fans adjacent the pre-heating chamber are synchronized opposite.Type: GrantFiled: February 14, 2017Date of Patent: March 27, 2018Inventor: Gary L. Kolari
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Publication number: 20140041248Abstract: A process for removing water and solutes from the lumens of green wood, while leaving the cell walls throughout the wood uniformally fully swollen, comprises subjecting the green wood to supercritical carbon dioxide.Type: ApplicationFiled: October 9, 2013Publication date: February 13, 2014Applicant: NEW ZEALAND FOREST RESEARCH INSTITUTE LIMITEDInventors: Robert Arthur Franich, Sheryl Suzanne Gallagher, Hendricus Wilhelmus Kroese
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Publication number: 20080022548Abstract: A method of conditioning an organic substrate is described The method involves heating the substrate using RF energy under desired pressure conditions in a constrained environment At a desired time point, the pressure is rapidly reduced causing any water present in the substrate to rapidly boil and convert to steam.Type: ApplicationFiled: November 19, 2004Publication date: January 31, 2008Inventors: Nigel Paul Maynard, Anthony John Bergervoet
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Patent number: 6751887Abstract: A system for dying material, in which system the material to be dried is located in a drying space isolated from its surroundings, in which space drying is done by way of negative pressure and a high-frequency electromagnetic field generated by electrodes. The drying space used is a drying batch-specific film package that is substantially separate from the rest of the equipment and that can be brought to an electromagnetic field generated by external electrodes. The film package serving as the drying space comprises nozzles, and for the period of drying, the package can be connected by tubes from the nozzles to equipment for removing moisture released from the material.Type: GrantFiled: September 9, 2003Date of Patent: June 22, 2004Assignee: Lahden AmmattikorkeakouluInventor: Kalle Hanhi
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Patent number: 6532683Abstract: A process for the drying of woven glass fabric to be used in a reinforcing laminate in sensitive electronic equipment is disclosed. The process implements a drying technique utilizing microwave energy for drying.Type: GrantFiled: April 20, 2001Date of Patent: March 18, 2003Assignee: BGF Industries, Inc.Inventor: Michael I. Bryant
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Patent number: 6230420Abstract: Physical effects produced within RMS resonators are utilized as a means to process materials within the resonator including for example one or more of comminution, converting liquids into vapors and gases, drying of powders, rapid mixing of gases and various materials, agglomeration, de-agglomeration, granulation, chemical reactions, stratification/separation, and the destruction of biological material.Type: GrantFiled: November 2, 1998Date of Patent: May 15, 2001Assignee: Macrosonix CorporationInventors: Christopher C. Lawrenson, Timothy S. Lucas, Thomas W. VanDoren, James N. Wisner
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Patent number: 6178660Abstract: A pass-through, wafer-processing tool for treating a moving semiconductor wafer with a process gas. The tool comprises an open-ended, non-isolated processing module having a wafer path through the module, vacuum manifolds mounted adjacent the wafer entry to and wafer exit from the module, and a gas manifold between the vacuum manifolds adapted to direct process gas onto the moving wafer. The gas manifold may deliver plasma ions generated by a remote plasma unit outside the module. Instead, a plasma may be generated inside the pass-through, wafer processing tool and, if so, the tool further comprises a top electrode mounted above the wafer passage. A wafer handler, which may be a robotic handler, carries the wafer through the wafer passage and serves as a bottom electrode.Type: GrantFiled: August 3, 1999Date of Patent: January 30, 2001Assignee: International Business Machines CorporationInventors: Peter A. Emmi, Byeongju Park
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Patent number: 6098306Abstract: Dielectric heating is used to assist with the cleaning of sorbent materials contaminated with oils and the like and the recovery of the solvent. In particular, a pressurized system is used such that a pressurized solvent is circulated to remove the contaminants from the sorbent materials. The RF radiation is directed into the vessel to vaporize residual solvents associated with the sorbent materials. Solvent is separated from the removed contaminants for reuse. RF radiation can be used to complete the removal of volatile compounds from the reclaimed oil/contaminants.Type: GrantFiled: October 27, 1998Date of Patent: August 8, 2000Assignee: CRI Recycling Services, Inc.Inventors: Michael Ramsey, John W. Summerfield
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Patent number: 6080978Abstract: A dielectric drying kiln material handling system includes a bottom electrode incorporating a conveyor system for moving material along said bottom electrode for moving material on and off of the electrode. Conveyors are built into the electrode in a manner so that the electrode surface of the bottom electrode, i.e. the surface contacting material to be dried is configured with gaps having dimensions so that the gaps do not significantly affect the uniformity of the power distribution over the electrode surface. Various types of conveyors may be used such as slat conveyors, roller conveyors, belt conveyors and the like provided the gaps, i.e. between the slats receiving the rollers or for accommodating the return rollers belt type conveyor are configured with dimensions so that the gaps do not significantly affect the uniformity of electromagnetic field and power distribution over the effective surface of the bottom electrode.Type: GrantFiled: September 28, 1998Date of Patent: June 27, 2000Assignee: HeatWave Drying Systems Ltd.Inventors: Glenn Craig Blaker, Terry Albert Enegren, Yiu Kwan Ho, Gary Kenneth Kooznetsoff, Robert Lewis Zwick
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Patent number: 6060019Abstract: A plasma-enhanced vacuum drying method is disclosed. It is advantageously applied in plasma sterilization processes in particular, and represents a significant improvement for general evacuation drying methods. Articles to be sterilized are placed in a sealed chamber and the chamber is evacuated. A plasma of residual gas species is generated in the chamber during an initial evacuation step. This promotes drying of the articles and advantageously allows a desired pressure to be attained more quickly than without the plasma. Sterilizing gas is injected into the chamber, and a second plasma is generated to activate the sterilizing gas plasma, thereby sterilizing the articles in the chamber.Type: GrantFiled: April 9, 1997Date of Patent: May 9, 2000Assignee: Ethicon, Inc.Inventors: Robert M. Spencer, Tralance O. Addy
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Patent number: 5942146Abstract: A dielectric drying kiln having a moveable electrode permanently electrically connected with a source of power via an electrical connector formed by a plurality of discrete interconnected electrically and mechanically interconnected conducting element that permit relative movement between the elements. One end of the electrical connector is connected to the moveable electrode and moveable therewith while said electrical connector maintains electrical connection with the source. The electrical connector has a minimum curvature on its outside surface having a radius of at least r to prevent arcing.Type: GrantFiled: September 28, 1998Date of Patent: August 24, 1999Assignee: HeatWave Drying Systems Ltd.Inventors: Glenn Craig Blaker, Terry Albert Enegren
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Patent number: 5886326Abstract: A microwave incinerator is configured to incinerate waste material. The waste material is installed within a microwave absorbing shroud located in a microwave chamber. The combination of low microwave heat input and a vacuum drawn on the chamber vaporizes the water in the garbage. During this first phase there is no combustion because of the relatively low temperature and the lack of oxygen. Once the material is dry, intense microwave energy is applied to the chamber heating the silicon carbide shroud to an elevated temperature in the range of about 500 to 1000 degrees C. Concurrent with the rapid rise in temperature, air containing oxygen is pumped into the chamber. The hot shroud ignites the material, after which heat is provided is a combination of combustion heat and microwave energy. The temperature is monitored and the microwave energy input is controlled to assure a controlled burn of the waste material.Type: GrantFiled: January 19, 1996Date of Patent: March 23, 1999Assignee: ThermoTrex CorporationInventor: Kenneth Y. Tang
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Patent number: 5373646Abstract: The invention relates to a process and an apparatus for drying sludge, in particular sewage sludge, or moist bulk material, wherein the material to be dried is heated by supplying energy by means of an electromagnetic alternating field generated between electrodes in a sealed pressurized vessel at an overpressure and the material moisture evaporated by the heating is used as heat transfer medium for heating the material to be dried in a step which is separate from the heating in the electromagnetic alternating field. In this process, the material to be dried is received with electrically insulated contiguous contact with the electrodes located in the pressurized vessel at least for a dwell time which is necessary for the heating and is then subjected to a flash drying.Type: GrantFiled: May 7, 1992Date of Patent: December 20, 1994Assignee: SICOWA Verfahrenstechnik fur Baustoffe GmbH & Co. KGInventors: Franz Wosnitza, Georg Zimmermann