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Durham
David J. Durham, Belper GB
| Patent application number | Description | Published |
|---|---|---|
| 20110059881 | Sulphur Free Composition And Lubricant Composition And Methods Thereof - A composition comprises a sulphur free reaction product of: (a)(i) a hydrocarbyl substituted aromatic compound containing an acidic group selected from the group consisting of a carboxylic group, a hydroxyl group and mixtures thereof; and (a)(ii) an organic nitrogen-containing base reacted with the acidic group. The composition is obtained by a preparatory process and is useful in a method for lubricating an internal combustion engine to include where the lubricant has reduced levels of sulphur, phosphorus and sulphated ash. | 03-10-2011 |
John Durham, Derbyshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20090050101 | PISTON AND INTERNAL COMBUSTION ENGINE THEREWITH AND METHOD OF CONSTRUCTING THE PISTON - A piston and internal combustion engine therewith constructed in accordance with the present invention has a piston body with an upper crown having a substantially cylindrical outer surface depending from a top surface along a central axis. At least one annular ring groove extends radially into the outer surface to provide a top land extending from the ring groove to the top surface. A plurality of waves are formed circumferentially about the top land. Each of the waves has a valley extending radially into the outer surface of the top land and extending from the top surface to the ring groove. The waves traverse from the top surface to the ring groove and are configured in substantially non-overlapping relation with one another and in a predetermined orientation relative to at least one of a fuel spray stream, a pin bore axis or a thrust axis of the piston. | 02-26-2009 |
John Anthony Douglas Bruce Durham, London GB
| Patent application number | Description | Published |
|---|---|---|
| 20090219522 | LEVELLING DEVICE - A mobile leveling apparatus for quickly and simply transferring the height of a visible, fixed datum point from a distant wall or column across a room. The leveling apparatus is hand-held and can be operated by a single user. The operator physically holds the apparatus at the actual point where the height of the datum point is required, thereby ensuring that the apparatus is always under his/her control. | 09-03-2009 |
Ricky Durham, Koln DE
| Patent application number | Description | Published |
|---|---|---|
| 20090016926 | THERMOSTABLE AND CORROSION-RESISTANT CAST NICKEL-CHROMIUM ALLOY - A nickel-chromium casting alloy comprising, in weight percent, up to 0.8% of carbon, up to 1% of silicon, up to 0.2% of manganese, 15 to 40% of chromium, 0.5 to 13% of iron, 1.5 to 7% of aluminum, up to 2.5% of niobium, up to 1.5% of titanium, 0.01 to 0.4% of zirconium, up to 0.06% of nitrogen, up to 12% of cobalt, up to 5% of molybdenum, up to 6% of tungsten and from 0.01 to 0.1% of yttrium, remainder nickel, has a high resistance to carburization and oxidation even at temperatures of over 1130° C. in a carburizing and oxidizing atmosphere, as well as a high thermal stability, in particular creep rupture strength. | 01-15-2009 |