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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 8136502 | Piston and connecting rod assembly having improved cooling characteristics A piston and connecting rod assembly wherein the piston includes an inner cooling gallery defined in the body thereof beneath the crown of the piston, an outer cooling gallery defined between the skirt of the piston and the body and beneath the crown. A pin bore is ... | 03/20/2012 |
| 8047178 | Force transfer mechanism for an engine A force transfer mechanism is provided for an internal-combustion engine. In the most preferred configuration, the force transfer mechanism comprises two inter-connected first class levers that are driven by four pistons. Each of the pistons is driven through its no... | 11/01/2011 |
| 7703431 | Connecting rod apparatus and method An improved two-piece connecting rod (800) that connects a reciprocating piston with a crankshaft in an internal combustion engine. The connecting rod (800) has a shank portion (810, 860), a cap portion (820, 870) and projections (830,... | 04/27/2010 |
| 7610894 | Self-compensating cylinder system in a process cycle The efficiency of a multi-cylinder engine is optimized by coupling the volume change in each cylinder to a common coordinate under conditions such that, at each point in the engine's cycle, the energy necessary to produce a differential volume change is reduced subs... | 11/03/2009 |
| 7571706 | Needle roller bearing and its manufacturing method A needle roller bearing comprises a plurality of needle rollers and a retainer. The retainer includes a pair of annular parts and pillar parts connecting the pair of annular parts so as to form pockets in which the needle rollers are housed. A sidewall surface of th... | 08/11/2009 |
| 7451737 | Powertrain of an internal combustion engine with piston and connecting rod A powertrain for an internal combustion engine having a connecting rod with a piston supported at one end which is adapted for easy assembly and disassembly without expensive tools. The piston is supported on the connecting rod by a universal joint defined by a sphe... | 11/18/2008 |
| 7434549 | Opposed double piston internal combustion engine An internal combustion engine including at least one engine cylinder includes a cylinder cavity with first and second stopping members interconnected by a cylinder wall, the cylinder further includes two piston members slidably moveable within said cylinder cavity a... | 10/14/2008 |
| 7434562 | Internal combustion engine with parallel crankshafts An internal combustion engine which includes two parallel crankshafts positioned in crankcases, a cylinder positioned on a side of the crankcases, a piston movably disposed within the cylinder, and connecting rods linked to the piston and extending from respective c... | 10/14/2008 |
| 7373916 | Method, computer software code, and system for restoration of master and articulating rods A method for restoring a length of at least one of a master rod and an articulating rod, the method including determining a length of the rod, if the rod is within an acceptable length, cleaning the rod, applying a masking material to a part of the rod to be protect... | 05/20/2008 |
| 7367363 | Sanitary conduit support systems Apparatus for supporting conduits within a sanitary environment. Some supports are configured so as to avoid the formation of surfaces that might collect dust, debris, cleaning fluids, etc. when installed. In one embodiment, the support includes a pair of opposing s... | 05/06/2008 |
| 7367305 | Internal combustion engine and connecting rod therefor A connecting rod of an internal combustion engine, and an internal combustion engine including the connecting rod, a piston, a crankshaft and a float bearing as main moving parts. A piston is connected to a connecting rod by a spherical joint and has radial ribs on ... | 05/06/2008 |
| 7363902 | Engine overall height reduction An internal combustion engine includes a piston (2) and a crankshaft (33). The crankshaft (33) includes: a journal (33A) as a rotation center; a crank pin (33B) that is located eccentrically with respect to the journal (33A)... | 04/29/2008 |
| 7325526 | Four-stroke engine system A four-stroke engine employs engine vibration for lubricating engine components. The engine vibration induces a ripple in a surface portion of the oil in an oil reservoir, which is located within a crankcase of the engine. The oil ripple causes misting of the oil, w... | 02/05/2008 |
| 7318397 | High efficiency high power internal combustion engine operating in a high compression conversion exchange cycle A piston (10), a spring (15) operatively coupled to a piston, the spring being inside (21) or outside (41) the piston, and if the spring is inside the piston, the diameter of the spring is equal to 0.7 to 0.9, and if it is outside of the ... | 01/15/2008 |
| 7305916 | Reciprocating-piston machine for motor vehicles A piston compressor has a cylinder including a traveling piston sealed therein. A drive motor acts on a crankshaft, a drive shaft thereof being received by a bore of the crankshaft. A connecting rod provides for articulated connection of a crankshaft-journal of the ... | 12/11/2007 |
| 7293534 | Premixed charge compression ignition engine and reciprocating generator having the same The object of the present invention is to provide a premixed charge compression ignition (PCCI) engine. The PCCI engine has a fuel injector (22) in a suction manifold (8) to prepare a premixed charge of fuel and air and induces a natural ignition of th... | 11/13/2007 |
| 7293756 | Engine fastening structure An engine fastening structure in which a crankcase and a cylinder body are provided as separate units, so that the crankcase and the cylinder body are connected together with connecting bolts, characterized in that the crankcase 2 is constructed in such a man... | 11/13/2007 |
| 7290507 | Lower link for piston crank mechanism of engine A lower link for an engine piston crank mechanism includes first and second half members joined by bolts to form a crankpin bearing portion. The first half member includes a first pin boss portion to connect the lower link with a first link which is one of an upper ... | 11/06/2007 |
| 7290518 | Piston-connecting rod spherical coupling structure A spherical coupling structure for a piston and a connecting rod, wherein a protrusion provided to the reverse side of a crown of a piston and a holding member for holding a small end are slidably fitted onto a small end, and a holding/fastening part for holding the... | 11/06/2007 |
| 7290508 | Lower link for piston crank mechanism of internal combustion engine A lower link for a piston crank mechanism of an internal combustion engine includes an upper section, a lower section, and a crank pin bearing section disposed between the upper section and the lower section, and mounted on a crank pin of a crank shaft. One of the u... | 11/06/2007 |
| 7219647 | Force transfer mechanism for an engine A multiple watt-linkage force transfer mechanism is provided for an internal-combustion engine. The force transfer mechanism comprises two “bell cranks” that are used to drive a single crankshaft through a watt linkage mechanism. Each bell crank, in turn, is dri... | 05/22/2007 |
| 7213563 | Piston engine having approximate straight-line mechanism An approximate straight-line mechanism that is connected to the connecting portion connecting the piston and the connecting rod regulates the movement of the connecting portion such that it moves in an approximately straight line along the axial center line of the c... | 05/08/2007 |
| 7181842 | Method of producing a workpiece forming at least one bearing eye A method of producing a workpiece forming at least one bearing eye is described, which is divided in the region of the bearing eye along an intended fracture point through a fracture separation, the bearing eye being coated with an anti-friction coating after assemb... | 02/27/2007 |
| 7178238 | Method of producing a workpiece having at least one bearing eye A method of producing a workpiece (1) having at least one bearing eye (2) is described, the bearing eye (2) being coated with an anti-friction coating (4), which forms a running surface deviating from a circular cylinder. In order to prov... | 02/20/2007 |
| 7159558 | Engine having centralized mass An engine is constructed such that respective centers of gravity of a crank shaft, a balancer shaft and a cylinder are positioned close to one another and the mass of the engine is thus centralized. The engine includes a shaft center of a cylinder that is offset to ... | 01/09/2007 |
| 7159559 | Split connecting rod, engine and vehicle A split connecting rod includes a fracture start groove that extends in an axial direction X and is located at the approximate center of each of opposing positions on an inner surface of a crank pin opening. A bearing securing groove is provided on either or both of... | 01/09/2007 |
| 7121160 | Mechanical transmission A constant power mechanical transmission with seamless, ripple free, infinitely variable torque multiplying outputs comprises an input shaft and an output shaft. The input shaft is coupled to a pair of oscillating levers whereby rotation of the input shaft causes os... | 10/17/2006 |
| 7121232 | Method in an internal combustion engine and an internal combustion engine An internal combustion engine, Z-engine. The compression part and the working part are separated. New gas is transported to the upper side of the piston. Below there is a small chamber corner. When the piston comes nearer the upper hollow part, the combustion gases ... | 10/17/2006 |
| 7111604 | Connecting rod for an internal combustion engine The invention relates to a connecting rod for an internal combustion engine, comprising a center rod having a first and a second end, the first end being provided with a big eye and the second end being provided with a connecting piece; wherein the big eye comprises... | 09/26/2006 |
| 7100549 | Mechanism including a piston-and-cylinder assembly A mechanism comprising a piston-and-cylinder assembly including a piston housed in a cylinder is provided. The mechanism includes a pin member passing through the piston and a guide member having a guide recess accommodating an end of the pin member, the guide reces... | 09/05/2006 |
| 7086368 | Piston for an internal combustion engine A piston for an internal combustion engine includes a crown, tubular walls extending from the edge of the crown, and a cup portion protruding from the rear surface of the crown and having a concave spherical surface for forming a spherical joint with a spherical sma... | 08/08/2006 |
| 7033525 | High conductivity polyaniline compositions and uses therefor The present invention describes compositions formed from polyanaline and carbon nanotubes, which exhibit enhanced conductivity and which provide uses in electronic circuit applications. ... | 04/25/2006 |
| 7021269 | Lower link of piston crank mechanism for internal combustion engine A lower link of a double link type piston crank mechanism comprises a crank pin bearing housing portion that is adapted to receive a crank pin of a crankshaft and defines a first contour, an upper pin receiving bore portion that is adapted to receive an upper pin of... | 04/04/2006 |
| 7021270 | Connecting rod and crankshaft assembly for an engine A novel engine is provided with a crankshaft that is offset from a centerline of the bore shaft, where a reciprocally sliding piston is disposed. A curved or angularly shaped connecting rod is pivotably connected to the piston at one end and to the crankshaft at the... | 04/04/2006 |
| 7017534 | Piston-cam engine A piston-cam engine includes a drive cylinder, a drive piston operably disposed therein having a piston head and a shaft, a support frame having a drive shaft rotatably movably connected thereto, a cam having a peripheral surface and having a plurality of lobes ther... | 03/28/2006 |
| 7013849 | Variable cylinder capacity engine A mechanical transmission device for a variable cylinder capacity engine includes at least a cylinder (10) wherein moves a piston (2), which is integral in its lower portion with a transmission member (3) co-operating through a small-sized rack ... | 03/21/2006 |
| 7011469 | Piston joint A joint for positioning between first and second elements includes an outer member and an inner member. The first and second elements are arranged for linear motion along a common axis. The outer member is configured for movement relative to the first and second ele... | 03/14/2006 |
| 6976467 | Reciprocating internal combustion engine The reciprocating internal-combustion engine comprises at least one hollow cylinder, with a chamber inside a working fluid, the chamber has an end closed by a head and an opposite end closed by a piston that reciprocates by rectilinear motion in the chamber between ... | 12/20/2005 |
| 6968751 | Axial piston machines This invention relates to internal combustion engines with cylinders arranged parallel to the main shaft and where reciprocating movements of the pistons are converted to rotation by means of a Z-crank mechanism and motion converter, or conversely to systems such as... | 11/29/2005 |
| 6925973 | Piston engine assembly A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the d... | 08/09/2005 |
