Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8161921 | Method to convert free-piston linear motion to rotary motion Embodiments described herein include a method for converting free-piston linear motion to rotary motion, comprising: providing a free-piston generator or motor/generator that has at least one piston having two compression heads; an... | 04/24/2012 |
| 8151744 | Method to convert free-piston linear motion to rotary motion Embodiments described herein include a method for converting free-piston linear motion to rotary motion, comprising: providing a free-piston generator or motor/generator that includes one or more pistons; and, for each piston, a surface is provided defining a helica... | 04/10/2012 |
| 8104436 | Quasi free piston engine A quasi free piston engine uses, a small, lightweight crankshaft to connect the piston assemblies of the free piston engine with a flywheel. While most of the power output from the combustion pistons is extracted by pumping pistons as hydraulic power, the small cran... | 01/31/2012 |
| 7997240 | System including an electromagnetically energized piston motor designed to convert chemical and electrical energy to mechanical energy An energy conversion and free hydrogen producing system including a electromagnetically energized reciprocating piston motor, a plurality of lead acid flow through batteries, each consisting of a plurality of individual flow through lead acid cells, and a hydrogen b... | 08/16/2011 |
| 7950356 | Opposed piston electromagnetic engine In an embodiment, an internal combustion engine includes a first cylinder having a first piston and a second piston slidably disposed therein, an intake port arranged to admit a reactant into the first cylinder between the first and second pistons, and an exhaust po... | 05/31/2011 |
| 7721686 | Method and system for controlling a free-piston energy converter A method and system for controlling a free-piston energy converter is disclosed in which effects of events, like combustion events, in at least one of at least two cylinders, are decoupled from each other by predicting forces acting on the moving mass of the convert... | 05/25/2010 |
| 7634979 | Combustion-powered linear air motor/compressor A new and improved combustion-powered linear air motor/compressor wherein the new and improved combustion-powered linear air motor/compressor comprises new and improved structure for achieving the scavenging of residual combustion products or exhaust gases from the ... | 12/22/2009 |
| 7467607 | Free piston vacuum producing apparatus The free piston vacuum producing apparatus is an internal combustion device with no piston rod or constraining mechanism attached to the free piston. After fuel ignition the piston is rapidly propelled toward the open end of a cylinder. As the combustion gases expan... | 12/23/2008 |
| 7455037 | Gas fastening apparatus having an internal combustion engine and gas induction device connected by a flexible tube The apparatus includes a handle (1) with a gas cartridge housing and the gas induction device (4) designed to be mounted on the cartridge and connected to the engine. The engine and the induction device (4) are connected by a flexible tube mount... | 11/25/2008 |
| 7426910 | Engine system having improved efficiency A propulsion system for a vehicle, comprising of an internal combustion engine, a thermoelectric device in thermal communication with the engine, and a control system for controlling the engine and the thermoelectric device during a first mode, supply electrical ene... | 09/23/2008 |
| 7383796 | Internal combustion engine Embodiments in accordance with the present invention provide an opposed piston, opposed cylinder (OPOC) internal combustion engine. The OPOC engine comprises two cylinders opposed at 180 degrees. A linking element connects two outer pistons so that they move in tand... | 06/10/2008 |
| 7363887 | Dynamic mass transfer rapid response power conversion system The present invention features a rapid fire rapid response power conversion system comprising (a) a chamber having at least one fluid port configured to supply combustible fluid to the chamber, and an out-take port; (b) a compressor for supplying compressed combusti... | 04/29/2008 |
| 7359194 | Device and method for cooling an electronics unit A device for cooling an electronics unit, in particular a control electronics unit of a hand-held power tool, has an air-conducting device that directs at least a portion of an air stream exiting an electric motor to the electronic unit, while a method for cooling i... | 04/15/2008 |
| 7341171 | Fan control for combustion-powered fastener-driving tool A combustion-powered fastener-driving tool includes a combustion-powered power source, at least one fan for associated with the power source, at least one temperature sensing device in operational proximity to the power source and a control system operationally asso... | 03/11/2008 |
| 7341174 | Pneumatic nail gun A pneumatic nail gun includes a gun body having a movable cylinder therein; a hitting piston disposed in the cylinder; a main air housing collecting a compressed high pressure air with a constant pressure; and at least one main passage disposed at a peripheral porti... | 03/11/2008 |
| 7328579 | Rotary piston heat engine system A rotary piston heat engine system is composed of two units. Each includes two pistons mounted for movement in opposite directions. Each piston is mounted for rotation in a cylinder. The longitudinal axes of the pistons and cylinder are collinear. The pistons are mo... | 02/12/2008 |
| 7329959 | Micro power generator and apparatus for producing reciprocating movement There is provided a micro power generator enhanced in efficiency and power generation output, and having an increased temperature range for operation. The micro power generator comprises: a high-temperature heat source; a low-temperature heat source; an enclosed bod... | 02/12/2008 |
| 7318506 | Free piston engine with linear power generator system A free piston engine with a linear power generation system with a variable stroke piston and improved construction and control is provided. The free piston engine includes a single double-ended piston located within a cylinder having opposed combustion chambers posi... | 01/15/2008 |
| 7316116 | Flywheel combustion engine A free piston drive combustion engine is provided wherein the piston are reciprocated by the force of combustion in combination with its compressed exhaust gases. A compressed air fuel mixture is ignited in the combustion chamber exploding driving a piston backward,... | 01/08/2008 |
| 7314025 | Combustion powered fastener-driving tool with interconnected chambers A combustion tool has a housing with an air intake end and an opposite bumper end, a combustion-powered power source in the housing including a cylinder encircling a reciprocating piston associated with a driver blade, and having at least one air port located at the... | 01/01/2008 |
| 7308997 | Combustion-operated setting tool A combustion-operated setting tool for driving fastening elements in a constructional component includes a device (30) for adjusting setting energy applied to a setting piston (15) axially displaceable in a guide space (4) of a piston guide (... | 12/18/2007 |
| 7308996 | Gas combustion-type impact device An injection nozzle 21 for injecting a combustible gas into an annular combustion chamber 10 formed above a driving cylinder 4 is formed so as to face the interior of the combustion chamber 10, in which a rotary fan 24 for mixing a... | 12/18/2007 |
| 7299963 | Temperature sensor for combustion nailer A combustion nailer includes a housing substantially enclosing a combustion engine having a cylinder head, a control unit associated with the housing for controlling operation of the tool, at least one printed circuit board electrically connected to the control unit... | 11/27/2007 |
| 7293684 | Pneumatic nail gun A pneumatic nail gun includes a gun body with a trigger, collecting a compressed high pressure air with a constant pressure, a movable cylinder installed in the gun body, a hitting piston disposed in the cylinder, a valve ring formed outside the cylinder, a head val... | 11/13/2007 |
| 7291943 | Linear generator with a swinging piston An electromechanical energy converter for a gaseous or vaporous medium comprising a stator (1) with two pot-shaped stator members (1a, 1b), each open at one end face and adjoining each other at these end faces, the stator members s... | 11/06/2007 |
| 7284511 | Combustion-engined setting tool A combustion-engined setting tool for driving fastening elements in a constructional component end including a combustion chamber (13) for combusting a gas mixture, an inlet/outlet device (40) for opening the combustion chamber (13) in its first... | 10/23/2007 |
| 7284510 | Combustion-engined setting tool A combustion-engined setting tool for driving fastening elements in constructional components includes a member (32) arranged in the combustion chamber (13) for generating turbulence of an oxidant-fuel mixture filling the combustion chamber (13)... | 10/23/2007 |
| 7275505 | Thermal regulation control for combustion nailer A combustion nailer includes a combustion-powered power source, at least one fan associated with the power source, at least one temperature sensor in operational proximity to the power source for sensing power source temperature, and a control system operationally a... | 10/02/2007 |
| 7275673 | Combustion-engined setting tool A combustion-engined setting tool for driving fastening elements in a constructional component, includes a guide cylinder (12), a setting piston (11) displaceable in the guide cylinder (12), a combustion chamber sleeve (15) displaceably a... | 10/02/2007 |
| 7273023 | Steam enhanced double piston cycle engine A steam enhanced dual piston cycle engine utilizes a unique dual piston apparatus that includes: a first cylinder housing a first piston therein, wherein the first piston performs only intake and compression strokes; a second cylinder housing an inner power piston t... | 09/25/2007 |
| 7270108 | Opposed piston, homogeneous charge pilot ignition engine An engine of the opposed piston, two-stroke, compression ignition type includes provision for injection of a main charge of liquid fuel into the bore of a cylinder between opposed pistons early in a compression stroke to permit the fuel to evaporate and mix with air... | 09/18/2007 |
| 7267257 | Combustion-engined setting tool A combustion-engined setting tool for driving fastening elements in a constructional component includes a guide cylinder (12), adjoining the combustion chamber (14) and in which a setting piston (11) is displaceable, a press-on element (30 | 09/11/2007 |
| 7263955 | Combustion powered linear actuator The present invention provides robotic vehicles having wheeled and hopping mobilities that are capable of traversing (e.g. by hopping over) obstacles that are large in size relative to the robot and, are capable of operation in unpredictable terrain over long range.... | 09/04/2007 |
| 7261070 | Linear fluid engine A linear fluid engine includes a power transfer cylinder that is driven by combustion of fuel in a combustion cylinder to pressurize a power transferring fluid. Some of the power transferring fluid is used to power a subsequent compression stroke in the combustion c... | 08/28/2007 |
| 7261071 | Combustion type power tool facilitating cleaning to internal cleaning target A combustion-type power tool including a housing, a combustion chamber provided in the housing, an ignition plug exposed to the combustion chamber, a cleaning passage communicatable with the combustion chamber, and a shut-off unit provided in the cleaning passage. | 08/28/2007 |
| 7258085 | Control device for free piston engine and method for the same A free piston engine has a pair of pistons opposing to each other and movable in a cylinder, to form a combustion chamber between the pistons. A mixed gas of air and fuel is supplied into the combustion chamber and the mixed gas is auto-ignited when it is compressed... | 08/21/2007 |
| 7258086 | Four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston engine with a variable piston stroke A four-cycle, four-cylinder, premixed charge compression ignition internal combustion reciprocating free piston engine with a variable piston stroke and a compression ratio that varies as needed to provide charge ignition, to offer the potential of higher efficiency... | 08/21/2007 |
| 7255070 | Internal combustion engine Embodiments in accordance with the present invention provide an opposed piston, opposed cylinder (OPOC) internal combustion engine. The OPOC engine comprises two cylinders opposed at 180 degrees. A linking element connects two outer pistons so that they move in tand... | 08/14/2007 |
| 7252140 | Apparatus and method for enhanced heat transfer One embodiment of the cooling module is implemented as a device having a heat sink and an integrated synthetic jet actuator. The heat sink is configured to have a channel and a jet distribution system associated with the synthetic jet actuator directs fluid flow int... | 08/07/2007 |
| 7246576 | Combustion-engined setting tool A combustion-engined setting tool for driving fastening elements such as, e.g., nails, blots, etc. in constructional components includes a combustion chamber (13) for combusting therein an oxidant-fuel mixture, a turbulence generating element, arranged in the... | 07/24/2007 |
