Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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.
| Number | Title | Issue Date |
| 7243621 | Two-stroke engine A two-stroke engine (1, 31, 41, 51) includes a cylinder (2) having a combustion chamber (5). The combustion chamber (5) is delimited by a piston (7) which drives a crankshaft (25) rotatably journalled in a crankcase (3 | 07/17/2007 |
| 6708958 | Air valve mechanism for two-cycle engine A carbureted two-cycle engine including an intake channel, a choke valve in the intake channel fixed to a pivotable choke valve shaft and lever, and a throttle valve in the intake channel fixed to a pivotable throttle valve shaft and lever. The engine includes an ai... | 03/23/2004 |
| 5992358 | Scavenge system for two cycle engines A number of embodiments of two cycle crankcase compression internal combustion engines having at least two cylinders in a common bank in side-by-side relationship. Each embodiment incorporates a main Schnurle type scavenging system that includes a pair of... | 11/30/1999 |
| 5586523 | Crankcase compression type two-cycle engine The present invention provides a crankcase compression type two-cycle engine which has a comparatively simple construction, is capable of operating at a low fuel consumption and discharges an exhaust gas having a comparatively low hydrocarbon concentratio... | 12/24/1996 |
| 5062396 | Device and method for introducing a carburetted mixture under presssure into the cylinder of an engine A method and device for introducing carburetted mixture under pressure into a first cylinder of an internal combustion engine comprising at least one other cylinder having a crankcase pump. The device for introducing carburetted mixture comprises a connec... | 11/05/1991 |
| 5033418 | Pressurized carburetted mixture introduction device and method A method and device for introducing a carburetted mixture into a first cylinder of an internal combustion engine under pressure, this engine comprising at least one other cylinder with a pump crankcase, further comprising a connecting duct between the cra... | 07/23/1991 |
| 5027757 | Two-stroke cycle engine cylinder construction A cylinder for an internal-combustion two-stroke engine, having multiple intake ports, multiple intake valve ports and multiple exhaust ports. The cylinder enables a two-stroke engine to run on gasoline without premixing it with lubricating oil and, due t... | 07/02/1991 |
| 5005537 | Method and device for introducing a carburetted mixture under pressure in a chamber of a two-stroke engine A device, and method for introducing a carburetted mixture under pressure into a chamber of a first cylinder of a two stroke-internal combustion engine. The device includes a feed valve cooperating with a seat for closing a duct feeding carburetted mixtur... | 04/09/1991 |
| 4995349 | Stratified air scavenging in two-stroke engine A two-cycle engine has an air inlet in the crankcase, and a spiral air-fuel passage encircling the cylinder wall rising from the crankcase to an inlet in the cylinder head to effect cooling of the cylinder. A fuel injection device introduces fuel into the... | 02/26/1991 |
