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Lukens
Bruce Lukens, Newberg, OR US
| Patent application number | Description | Published |
|---|---|---|
| 20090042500 | Hood and pollution control unit with ultra violet light and electro-static precipitator - A ventilator assembly for removing contaminants in cooking exhaust includes a hood portion having a hood plenum and an exhaust portion downstream of and in fluid communication with the hood plenum. An electro-static precipitator is disposed in the hood plenum or the exhaust portion, and at least one ultra-violet lamp is disposed upstream of the electro-static precipitator for cleaning the electro-static precipitator. The ultra-violet radiation reacts with the cooking exhaust and removes collected contaminants from an electro-static cell of the electro-static precipitator. | 02-12-2009 |
| 20110114076 | COMMERCIAL KITCHEN EXHAUST SYSTEM - An exhaust system includes a hood structure having one or more of (i) an exhaust flow infeed surface extending downward from a lower end of the filter unit that helps to feed the thermal plume toward the filter unit, (ii) a bypass flow transition surface extending upward from the upper end of the filter unit and then forward to aid bypass flow in circulating back toward the filter aperture and (iii) a front wall structure that includes a downwardly extending wall portion with a chamfered and/or curved transition portion at its lower end and a rearwardly extending wall portion. | 05-19-2011 |
Peter C. Lukens, Oceanside, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090288427 | ISOTHERMAL GAS SUPPLY AND METHOD FOR MINIMIZING THE TEMPERATURE EXCURSION OF A GAS MIXTURE RELEASED THEREFROM - Embodiments of a pressurized gas supply are provided. In one embodiment, the pressurized gas supply includes a pressurized gas reservoir and a pressure reducer fluidly coupled to the pressurized gas reservoir. The pressure reducer is configured to reduce the pressure of gas received from the pressurized gas reservoir to a predetermined output pressure (P | 11-26-2009 |
Peter C. Lukens, Tucson, AZ US
| Patent application number | Description | Published |
|---|---|---|
| 20090173144 | Leak detection system with controlled differential pressure - A system for detecting leaks in a unit. The novel system includes a first mechanism for injecting a first gas into an interior or an exterior of the unit, a second mechanism for sampling gas from an exterior or an interior of the unit to determine if the first gas has leaked out of or into the unit, respectively, and a third mechanism for controlling a differential pressure between the interior and exterior of the unit during sampling. In an illustrative embodiment, the differential pressure is controlled by injecting a second gas into the exterior or interior of the unit to replace the sampled gas, and using pressure regulators to control the pressures of the first and second gases such that the differential pressure remains constant during sampling. | 07-09-2009 |
Tom Lukens, Bellevue, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20110296595 | HEADGEAR - The headgear has right and left symmetrical earguard assemblies with an earguard pad and protective shell that are detachable from each other. A plurality of detachable head straps join each earguard assembly to prevent separation of the pad and shell of each earguard assembly. The periphery of each protective shell is surrounded and embraced by peripheral wall portions on the pads to align the respective shells on the respective earguard pads in an alignment position. Corresponding engageable protrusions and recesses on the pads and shells also help maintain the alignment position. | 12-08-2011 |