U.S. patents available from 1976 to present. U.S. patent
applications available from 2005 to present.  Icon_funbox
Quotables   Dave Barry  Newsletter  PatentStorm News  Make the
Most of Our Site  See this month's Top Inventors and Most Cited
Patents.   Registered users: Manage your profile.   Class
123/65VA - Sleeve valve  Subclass of Class 123 - Internal-
combustion engines No. of patents: 19 Last issue date:
08/05/2008  NumberTitleIssue Date 7406938Cooling mechanisms for
rotary valve cylinder engines A cooling mechanism for a rotary
valve cylinder engine 1 comprising a rotary valve cylinder 3
rotatably mounted within an outer cylindrical valve element 8,
the rotary valve cylinder 3 and the outer cylindrical valve
element 8 each... 7350506Variable stroke property engine
Provided is a variable stroke property engine that can prevent
an increase in the resistance to the engine owing to the contact
between the variable stroke piston mechanism and lubricating
oil. In a variable stroke property engine equipped wit