Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7240895 | Gas exchange valve for an internal combustion engine The invention relates to a gas exchange valve for an internal combustion engine, in each case comprising in particular a hollow valve stem (3) and valve head, in which the valve head comprises a valve bottom and a hollow valve keeper, connected to the externa... | 07/10/2007 |
| 7232351 | Personal watercraft A personal watercraft includes a saddle ride type seat provided at a roughly central portion of a watercraft body, an engine mounted on the lower side of the seat and directed in a front-rear direction of the watercraft body, and cylinders provided in the engine are... | 06/19/2007 |
| 7021262 | Undercowl plenum chamber with preferential air paths An air intake system for an outboard motor provides parallel air flow paths between an opening formed in a cowl of the outboard motor and an air intake manifold of an engine under the cowl. A first air path flows in a relatively direct path between the opening in th... | 04/04/2006 |
| 6532914 | Internal combustion engine A four-cycle engine includes a cylinder block defining a cylinder bore. A piston is reciprocally disposed within the cylinder bore. A cylinder head member closes an end of the cylinder bore to define a combustion chamber together with the cylinder bore an... | 03/18/2003 |
| 6257177 | Water pump for the cooling circuit of an internal combustion engine A water pump for the cooling circuit of an internal combustion engine. The water pump includes a pump housing and a pump device driven in the pump housing. A servo valve having a rotary gate is integrated in the pump housing. The rotary gate is approximat... | 07/10/2001 |
| 4790273 | Vertical engine for walk behind lawn mower An improved lubricating system for an internal combustion engine having a horizontally disposed cylinder. The engine is provided with overhead valves that are disposed vertically above each other and which reciprocate about horizontally extending axes. Th... | 12/13/1988 |
| 4450798 | Engine intake valve with heat pipe An internal combustion engine intake valve with an internal heat pipe. The valve stem and valve head are hollow and have a wicking material fixed to the internal hollow surface. A coolant material is contained within the hollow valve. A heat exchanger is ... | 05/29/1984 |
| 4404805 | Method of and system for power generation by supercharged internal combustion engine An internal combustion engine supercharged with air by an exhaust gas-driven turbo-compressor discharging through a by-pass duct a tapped flow rate of compressed air into the exhaust gas pipe-line feeding the turbine, said tapped flow rate of compressed a... | 09/20/1983 |
| 4262638 | Mushroom valve with forced fluid cooling, in particular for an internal combustion engine A valve, in particular for an internal combustion engine, of the mushroom type cooled by forced circulation of a cooling fluid, comprising a valve stem having at least two longitudinal cooling passage-ways and a valve head being provided with a substantia... | 04/21/1981 |
| 4200066 | Internal combustion piston engine The cage for the valve seat is provided with cooling ducts which are uniformly spaced about the cage. Alternating ducts are used as coolant supply ducts while the remaining ducts are used as exhaust ducts. The ducts are arranged to uniformly cool the cage... | 04/29/1980 |
| 4190941 | Method of making cooled valves for internal combustion engines and valves obtained thereby The invention relates to a method of manufacturing cooled valves for internal combustion engines. From a first cylindrical billet is formed a valve blank by drilling an axial blind bore therein and machining an inner circumferential groove at the blind en... | 03/04/1980 |
| 4187807 | Cooled engine valve with improved heat transfer An engine valve comprises an elongated stem having a head secured on an end thereof. A tube is disposed in the stem to terminate at an outlet to communicate a liquid coolant, such as oil, to an annular chamber defined in the head. An agitator ring is loos... | 02/12/1980 |
| 4182282 | Mushroom valve housing with fluid coolant circulation for internal combustion engines The invention provides a mushroom valve housing comprising a cage (1) and a guide (2), Cage (1) comprises legs (3, 4, 5, 6) supporting a valve seat (7) containing an annular space (8). Guide (2) has an annular cavity (9) with two sections (9a, 9b) communi... | 01/08/1980 |
| 4169488 | Cooled engine valve An engine valve, reciprocally mounted in an engine, comprises a hollow stem having a head secured thereon and an annular face defined on the head adapted to engage an annular seat defined on an insert secured in the engine. A first tube is disposed in the... | 10/02/1979 |
| 4164957 | Oil-cooled engine valve An engine valve comprises an elongated hollow stem having a hollow head secured on an end thereof. A tube is disposed in the stem to define an inlet passage therethrough and an outlet passage between the tube and the stem. An annular oil distributor and h... | 08/21/1979 |
| 4147138 | Mushroom-type valve cooled by cooling fluid circulation The invention relates to a mushroom-type valve cooled by cooling fluid circulation for an internal combustion engine wherein the terminal face of the end portion of the stem is aligned flush with the corresponding face of the valve head and forms the cent... | 04/03/1979 |
| 4008695 | Cooled integral valve chest for an internal combustion engine and method for making same An integrally moulded overhead valve chest for an internal combustion engine, comprising a cage having several arms and formed with an annular valve seat cooling chamber and a valve stem guide formed with an annular guide cooling chamber which communicate... | 02/22/1977 |
| 3989424 | Engine ports An improved ported mechanism such as an engine, compressor or the like. The mechanism includes a housing defining a chamber and a liner is disposed within the housing and supported thereby to define the chamber walls. Coolant passages extend between the h... | 11/02/1976 |
| 3945356 | Cooled exhaust valve and methods of manufacture thereof Exhaust valve for an internal combustion engine, of the type cooled by fluid circulation and comprising a valve head and a stem screwed into the said head. Said exhaust valve comprises intake and return ducts for the cooling liquid, which are parallel and... | 03/23/1976 |
