Unitary exhaust manifold gasket and heat shield
Unitary installation of engine cylinder liner, piston and rod
Unitary ladder frame and cylinder block structure and engine...
Unitary plug mixer and support therefor
Unitized distributor vaccum spark advance control valve with...
Unitized hybrid rocket system
Unitized injector modified for ultrasonically stimulated...
Unitized intercooler core and inlet plenum
Universal cranking mechanism for starters
Universal fuel injection system controller
Universal gaseous fuel injector cartridge
Universal joint-type vectoring turbojet exhaust nozzle
Universal starter motor assembly
Unsymmetrical free piston engine
Unthrottled internal combustion engine
Upgrader variable pressure regulator for internal combustion...
Upgrader variable pressure regulator for internal combustion...
Upper crankshaft bearing lubrication
Upper speed limiting device
Use of an information support for climatic and environmental...