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David Douglas

David Douglas Dieziger, Missoula, MT US

Patent application numberDescriptionPublished
20090194961VEHICLE SUSPENSION SYSTEM - A suspension system for a tilting vehicular chassis based on more than three wheels separates a tilting component of the chassis from a non-tilting component. The non-tilting component provides a means for powering the vehicle with automotive-type engine and drive train options, while the tilting component provides the turning stability necessary for a narrower wheel base. The narrower wheel base benefits fuel economy. The multiplicity of wheels, and the breadth of platform thus enabled, permits shelter and comfort features for the occupant not otherwise available on a typical two-wheel chassis.08-06-2009
20100163644ROTARY PROPULSION NOZZLE SET - A self-governing spray apparatus for irrigation or cleaning purposes is provided. A spray nozzle at the end of a moment arm and substantially perpendicular to an axis of rotation creates a reaction torque to distribute a spray by spinning. A hinged member thrust into the spray pattern by means of the centrifugal force caused by the spin deflects a portion of the spray and results in a braking action. An equilibrium angular speed is thereby reached by self-correcting means.07-01-2010
20100206817PORTABLE SETTLING AND DEWATERING TANK - A settling tank for dewatering a thin slurry is provided in a lined portable container and with a disposable filtering means. A novel method of processing the slurry by settlement of the solid phase and removal of the liquid phase in cycles avoids the clogging of the filtering means. The settling tank can be easily transported and dumped without requiring the transferring of residue sludge or the cleaning of equipment.08-19-2010
20110002769CENTRIFUGAL PUMP FOR DE-WATERING - A method of de-watering during intermittent dry running periods with a self-priming centrifugal pump is presented. Centrifugal pumps, as opposed to diaphragm pumps, are advantageous because they are less expensive and can provide greater capacity. The shaft seals are sensitive, however, to frictional heating when water flow is interrupted. In some situations, this fractional heating may desiccate self-priming. The inventive concept provides a continuous stream of pressurized water moving through the pump to cool the seal and sustain priming capability without substantially impairing the ability of the pump to resume wet operation.01-06-2011
20110110753SYSTEM FOR LOADING CARGO - A simplified apparatus is provided to exploit certain unique characteristics of DC winches, whereby two winches may be cooperatively joined to load and unload a light-duty truck. Since the speed and torque are linearly related in a DC motor, it possible to manipulate certain parameters, such as the resistance of the armature and the mechanical leverage applied to the load, to result in a stable dynamic between two oppositely-directed DC-motor winches. The novel concept avoids the need for controls to coordinate the winches, and no installation is required that would otherwise limit the use of the truck for other purposes.05-12-2011

Patent applications by David Douglas Dieziger, Missoula, MT US

David Douglas Friske, Royal Oak, MI US

Patent application numberDescriptionPublished
20100037714CAMBER ANGLE OPTIMIZATION FOR A BIAXIAL WHEEL TEST MACHINE - A method for controlling a biaxial wheel test machine used for simulating loads experienced by a test wheel under actual driving conditions and for obtaining an accurate determination of wheel camber angle.02-18-2010

David Douglas Senogles, Benoni ZA

Patent application numberDescriptionPublished
20090251332MONITORING SYSTEM - A monitoring arrangement for use in an underground excavation includes an elongate support unit between walls in the excavation. A load-responsive sensing arrangement can be included and can be placed on the elongate support unit. A control system monitors the sensing arrangement and an alarm can be activated.10-08-2009