Prengaman
Christopher Prengaman, Painesville, OH US
Patent application number | Description | Published |
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20100062400 | Method of Operating a Drive Simulator - The disclosed invention relates to a method of operating a drive simulator to simulate the driving of a vehicle when the transmission or axle is improperly lubricated. The drive simulator may be used to simulate chatter, shudder or shift feel. | 03-11-2010 |
David R. Prengaman, Arlington, TX US
Patent application number | Description | Published |
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20080233482 | Lead-Tin-Silver-Bismuth Containing Alloy for Positive Grid of Lead Acid Batteries - A lead-acid battery grid made from a lead-based alloy containing, in addition to lead, tin at a concentration that is at least about 0.500%, silver at a concentration that is greater than 0.006%, and bismuth at a concentration that is at least about 0.005%, and, if calcium is present in the lead-based alloy, the calcium is at concentration that is no greater than about 0.010%. | 09-25-2008 |
David R. Prengaman, Dallas, TX US
Patent application number | Description | Published |
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20150125748 | Corrosion Resistant Positive Grid for Lead-Acid Batteries - A battery grid comprising a continuous cast and mechanically deformed lead-based alloy that comprises lead and silver and is essentially free of calcium, wherein the silver is at a concentration that is in a range of about 0.003 to about 0.015 weight percent, and has a predominant equiaxed grain structure that comprises grain sizes that are in a range of about 0.1 to about 5 microns. Other alloy constituents include bismuth at a concentration that is in a range of about 0.003 to about 0.002 weight percent and tin at a concentration that is in a range of about 0.2 to about 1.8 weight percent. A process for making strip of said alloy for use in manufacturing said grid. A battery comprising said grid. | 05-07-2015 |