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Degroot, MI

Jon Degroot, Midland, MI US

Patent application numberDescriptionPublished
20090003758Impact Resistant Optical Waveguide and Method of Manufacture Thereof - An impact resistant waveguide includes a clad surrounding a core. A reinforcing filler is incorporated in a curable silicone composition used to prepare the core, thereby imparting impact resistance to the core. A method of manufacture of the waveguide includes injecting the curable silicone composition into a clad made of silicone elastomeric tubing and thereafter curing the curable silicone composition.01-01-2009

Kenneth P. Degroot, Macomb Twp., MI US

Patent application numberDescriptionPublished
20080302331ENGINE EVENT-BASED CORRECTION OF ENGINE SPEED FLUCTUATIONS - Ignition timing for a combustion engine may be controlled by determining the roughness of current engine operation, comparing the determined roughness with a control roughness to determine if the determined roughness is within a threshold limit of the control roughness, and changing the ignition timing in a subsequent fuel delivery event as a function of the difference between the determined roughness and the control roughness. Preferably, the ignition timing is changed at least when the determined roughness is not within the threshold limit, although other factors may be taken into account when changing the ignition timing.12-11-2008

Marty W. Degroot, Midland, MI US

Patent application numberDescriptionPublished
20100243046METHOD OF FORMING A PROTECTIVE LAYER ON THIN-FILM PHOTOVOLTAIC ARTICLES AND ARTICLES MADE WITH SUCH A LAYER - Chalcogenide based photovoltaic devices cells with good resistance to environmental elements can be formed by direct low temperature deposition of inorganic barrier layers onto the film. A unique multilayer barrier can be formed in a single step when reactive sputtering of the silicon nitride onto an inorganic oxide top layer of the PV device.09-30-2010
20110034642SILYLIMIDAZOLIUM SALT COMPLEXES - The present invention relates to silylimidazolium salt complexes and their uses as catalysts including tunable latent catalysts for curing epoxy resins.02-10-2011

Michael Degroot, Grand Rapids, MI US

Patent application numberDescriptionPublished
20090008224LOW FRICTION, DIRECT DRIVE CONVEYOR WITH A RAKED TOOTH DRIVE - A conveyor includes an endless belt having teeth with drive faces raked away from the direction of travel. The conveyor also includes a drive pulley having sheaves with drive faces raked toward the direction of travel. The drive faces on the sheaves engage the drive faces on the teeth to move the belt and the raked angle tends to pull the belt inwardly. A stationary foot assists removing a driven tooth from its corresponding sheave.01-08-2009
20090032376CONVEYOR BELT WITH ATTACHED STRIPS OF TEETH - An endless conveyor belt (02-05-2009
20090301845THERMOPLASTIC BELT CONNECTOR WITH FINGERS - A toothed belt connector for making an endless belt has two leaves, adapted to be connected to each other by knuckles along one or more teeth. Each knuckle has at least one hole extending through tooth portions so that when the holes are in registry, a pin can be extended through the holes to connect the leaves at the teeth. The leaves can be adjoined to the ends of a belt to make the belt endless. The tip end of each knuckle can be beveled or it can have a stepped finger that fits into a cutout on the opposite leaf to keep the end of the knuckle from protruding as the belt wraps around a sprocket.12-10-2009
20110017578LOW FRICTION, DIRECT DRIVE CONVEYOR WITH A RAKED TOOTH DRIVE - An endless conveyor belt has teeth with drive faces raked away from the direction of travel. The belt can be driven by a drive pulley having sheaves with drive faces raked toward the direction of travel. The drive faces on the sheaves engage the drive faces on the teeth to move the belt and the raked angle tends to pull the belt inwardly. A stationary foot assists removing a driven tooth from its corresponding sheave.01-27-2011
20110048903LOW FRICTION, DIRECT DRIVE CONVEYOR BELT - A thermoplastic endless belt has a smooth outer surface substantially free of discontinuities and an inner surface with a plurality of teeth at a given belt pitch. The teeth are adapted to engage a pulley with circumferentially spaced sheaves at a pulley pitch greater than the belt pitch. The belt is slightly stretchable so that the pulley can drive the endless belt when engaging the teeth within a range of load on the belt. Means are provided to minimize friction between the belt and the drive pulley. Also, a position limiter ensures that the driven tooth stays engaged optimally with the drive sheave.03-03-2011

Patent applications by Michael Degroot, Grand Rapids, MI US

Richard James Degroot, Southfield, MI US

Patent application numberDescriptionPublished
20100202171Portable power supply for laboratory equipment - A portable power supply for controlling laboratory experiments, the power supply includes input terminals that receive control signals and power terminals that supply power to laboratory devices. The power supply enables power levels of standard laboratory equipment to be automatically controlled.08-12-2010
20100202924Modular Laboratory Automation System - A modular laboratory automation system for monitoring and controlling laboratory experiments, the modular laboratory automation system including a controller, an interface board, and a portable power supply. Power levels of standard laboratory equipment can be automatically controlled, and conditions and parameters of experiments can be automatically monitored and recorded. The laboratory automation system is modular and can be configured to operate with laboratory experiments having varying setups and equipment.08-12-2010