U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5377411

Hair Cutting Appliance

A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 123/84 - Adjacent supply and exhaust valves


Subclass of Class 123 - Internal-combustion engines
Definition: Four-cycle internal-combustion engines having the supply
No. of patents: 2
Last issue date: 09/23/1980


NumberTitleIssue Date
4223647Slanted internal combustion engine
Each cylinder of a slanted, in-line, overhead valve, internal combustion engine has intake and exhaust valves with axes which extend radially from and perpendicular to the camshaft axis. The camshaft axis is above an inclined plane which includes the cent...
09/23/1980
4114585Internal-combustion engines
A spark-ignition four-stroke gasoline engine, of the commonly mass-produced type having a plurality of cylinders provided each with two poppet valves mounted in a cylinder-head of the engine and constituting respectively an inlet valve, for passing a fuel...
09/19/1978
 
Sign InRegister
Username  
Password   
forgot password?