Abstract: An electrically conducting track comprising an electrically conducting track layer; a semiconductor substrate; and a dielectric layer sandwiched between track layer and semiconductor substrate; the electrically conducting track further comprising an electrically conducting resistor track between semiconductor substrate and dielectric layer

Abstract: An internal combustion reciprocating engine including a drive shaft, at least one piston, and a piston coupling corresponding to each piston wherein each coupling includes: a crank rotatably coupled to the piston, a first and second toothed crank cam gear fixedly coupled to the crank, a first and second complementary toothed drive cam gear fixedly coupled to the drive shaft and drivingly engaged with the corresponding first and second crank cam gears for at least a first and second portion, respectively, of a complete revolution of the drive shaft so linear movement of the piston is converted to rotation of the drive shaft.