Bizarre Patents
Behavior Modification Wristwatch
A wristwatch including a watch band and a watch body having an octagon shaped perimeter and being red in color and having the word STOP thereon to resemble a stop sign.
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| Number | Title | Issue Date |
| 7311075 | Split piston for an internal combustion engine The invention relates to a split piston for an internal combustion engine, comprising an upper piece, connected to a lower piece, by means of a screw connection. The screw connection comprises a tubular connector piece, mounted on the underside of the piston upper p... | 12/25/2007 |
| 7005620 | Piston and method of manufacture A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enable bonding of the joining surf... | 02/28/2006 |
| 6973723 | Piston formed by powder metallurgical methods A piston includes a piston structure being unitarily formed in a powder metallurgy process, the piston structure having a crown assembly and a skirt assembly, at least a partial combustion chamber being formed intersecting a piston crown surface during the powder me... | 12/13/2005 |
| 6837145 | Fluid powered actuator A three position fluid powered actuator having a piston reciprocally positioned within a cylindrical chamber in a body. The piston has a socket in communication with an axial opening through the piston. A piston shaft has a first end passing through the axial openin... | 01/04/2005 |
| 6571684 | Crosshead piston and bearing assemblies A crosshead piston assembly has a piston body with an upper head portion formed with a plurality of piston rings and a lower stem portion formed with a pin bore. The pin bore has a pair of lower, laterally spaced mounting ears presenting a bearing support... | 06/03/2003 |
| 6318243 | Two-piece piston assembly An improved two-piece assembly having a piston skirt and piston crown made from two different materials. The piston assembly attaching to a piston rod without the use of an external bore in the piston skirt.... | 11/20/2001 |
| 5483869 | Sealed articulated piston The design and construction of past articulated pistons include an open space between a head portion and an independent skirt portion. The open space allows excess cooling fluid, such as oil, to exit the piston and flow toward the cylinder, increasing oil... | 01/16/1996 |
| 5394788 | Head for articulated piston A cooled piston head and method of manufacture, the piston head having a closed cooling chamber. In one embodiment, the piston head is formed of a top member, an intermediate member and a pin boss member joined to each other preferably by welding; the top... | 03/07/1995 |
| 5359922 | Head of two welded parts for two-piece articulated piston A method to manufacture an articulated piston head wherein the two portions composing the head, i.e. the top portion and the pin boss portion, are formed separately from blanks of forged or cast chromium-molybdenum steel or a low alloy steel, subjected to... | 11/01/1994 |
| 5072654 | Piston and bearing assemblies A novel prefinished piston pin insert bearing is described wherein the tight radial clearances required for acceptable bearing function are maintained in spite of the tolerances required for assembly through a unique inner bearing surface geometry and thr... | 12/17/1991 |
| 5040454 | Piston assembly and piston member thereof having a predetermined compression height to diameter ratio Present day diesel engines having aluminum piston assemblies are limited to combustion chamber pressures of approximately 12,410 kPa (1,800 psi) whereas the desire is to increase such pressures up to the 15,170 kPa (2,200 psi) range. To reach such levels ... | 08/20/1991 |
| 4989559 | Pistons for internal combustion engines Pistons are described comprising a crown having an associated piston ring groove belt and which crown is supported by gudgeon pin bosses connected thereto by two generally axially extending planar webs which are orientated transversely to the gudgeon pin ... | 02/05/1991 |
| 4986167 | Articulated piston with a cooling recess having a preestablished volume therein The design and construction of past articulated pistons has failed to include the most efficient cooling reservoir for transferring heat from the piston to the coolant. The present invention overcomes these problems by using an annular cooling recess of a... | 01/22/1991 |
| 4805518 | Piston A crosshead piston 10 comprises a head member 18 and a skirt member 20, each of which can be secured independently to a piston pin 14. The skirt 20 has a reduced diameter upper end portion 66 which fits within lower end 24 of the head member ring belt por... | 02/21/1989 |
| 4727795 | Pistons The height of a piston for an internal combustion engine is reduced by the provision of gudgeon pin bores which intersect or at least partly intersect a ring band extending around the crown. This allows the mass of the piston to be reduced and allows impr... | 03/01/1988 |
| 4635596 | Assembly of piston and connecting rod in internal-combustion engine In an internal-combustion engine, a piston pin of each piston is integrally and rigidly fixed to the small end of a connecting rod. The piston pin is pivotally coupled to the piston by way of a metal bearing interposed therebetween, and is held thus in co... | 01/13/1987 |
| 4531269 | Method of assembling an improved heat insulated piston An improved heat insulated piston assembly for an internal combustion engine and a method of assembly. The improved piston assembly includes a piston constructed of a sleeve having an interference fit about a heat insulated core. The core has a first end ... | 07/30/1985 |
| 4459900 | Heat insulated piston assembly and method of assembling An improved heat insulated piston assembly for an internal combustion engine and a method of assembly. The improved piston assembly includes a piston constructed of a sleeve having an interference fit about a heat insulated core. The core has a first end ... | 07/17/1984 |
| 4433616 | Piston assembly for an internal combustion engine A piston assembly for an internal combustion engine having a rotatable crankshaft. The piston assembly includes a piston body having a concave configured cavity formed in one end and a plurality of recesses formed in its outer circumference. The piston bo... | 02/28/1984 |
