Bizarre Patents
An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.
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 |
| 7066078 | Piston for internal combustion engine By casting a preformed member composed of a fiber reinforced material into a base material of a piston, a pair of crown reinforcing portions corresponding to respective pin boss portions are formed on a crown portion, and the pair of crown reinforcing portions are c... | 06/27/2006 |
| 6427579 | Piston of internal combustion engine and method of producing same A piston of an internal combustion engine comprises a crown portion constructed of an aluminum alloy. The crown portion has a bowl in a top surface thereof. The bowl serves as a combustion chamber. Boss portions are projected downward from the crown porti... | 08/06/2002 |
| 6240827 | Composite piston for reciprocating machine A composite piston and method for forming such a piston for a reciprocating machine such as an internal combustion engine. A blank is formed from a pair of dissimilar alloys, one of which has substantially greater properties such as strength or abrasion r... | 06/05/2001 |
| 5809962 | Method for producing a piston for an internal combustion engine and a piston produced by the method A piston for an internal combustion engine includes an insert defining an air chamber opening into the combustion chamber. The insert is preformed to a desired configuration and the piston cast around the insert thus securing the insert within the structu... | 09/22/1998 |
| 5660156 | Cast piston having reinforced combustion bowl edge A cast piston which includes a metal insert and a combustion bowl, with the metal insert defining a sharp undercut structure at an upper portion of the combustion bowl. The sharp undercut structure of the insert contains combustible gases and helps improv... | 08/26/1997 |
| 5560334 | Piston with a reinforcing insert Piston with a reinforcing insert, presenting a top face (11) with a recessed combustion chamber (12) provided with a lateral peripheral wall, defined by the annular insert (20), which presents an internal end face (24) with a radial extension (d1 | 10/01/1996 |
| 5282411 | Heat-insulating piston with middle section of less dense but same material This heat-insulating piston has a piston head comprising a piston head base portion consisting of a ceramic material, a heat-insulating member jointed to the piston head base portion and consisting of a whisker fired member of the same ceramic material as... | 02/01/1994 |
| 5144885 | Ceramic-metal friction welding member and ceramic cast-in bonded piston made thereof A ceramic-metal friction welded member includes a ceramic member formed with an annular notch in an outer circumference of its surface and a metal member joined onto the annular notch of the ceramic member by friction welding. A ceramic cast-in bonded pis... | 09/08/1992 |
| 5127494 | Disk brake with a thermally insulated working chamber The caliper disc brake comprises at least one hydraulic working chamber (20) intended for spacing apart from one another a piston (16) bearing on one brake shoe (12) and a caliper (18) bearing on the other brake shoe (14). The inner walls of the working c... | 07/07/1992 |
| 5092289 | Light alloy piston In a light alloy piston for use in diesel engines for an indirect fuel injection, a body of fibrous material is embedded in the cast piston head and is formed with a shallow combustion recess. In order to improve the conduction of heat outside the portion... | 03/03/1992 |
| 5018489 | Heat-insulating piston In a heat-insulating piston comprising a ceramic cylindrical member having the lower end surface thereof in contact with the outer peripheral upper end surface of a piston skirt member, a head base member having the peripheral portion thereof in contact w... | 05/28/1991 |
| 4920864 | Reinforced piston A reinforced lightweight metal piston having fibers within the piston crown to reinforce the crown surface to improve the thermal properties and wear resistance of the crown surface. The reinforcing fibers are embedded in the piston metal using a pressure... | 05/01/1990 |
| 4909133 | Lightweight piston architecture The invention is an improvement in a lightweight carbon-carbon composite piston, the improvement comprehending the use of near-net shape knitted or warp-interlock pre-forms to improve the structural qualitites of the piston. In its preferred embodiment, a... | 03/20/1990 |
| 4838149 | Pistons Pistons for internal combusion engines are described. The pistons comprise a crown component and a skirt component wherein the crown component consists of an iron or nickel based alloy annular portion having fitted directly therein a ceramic insert, the c... | 06/13/1989 |
| 4833977 | Piston for internal combustion engine A piston for an internal combustion engine, in particular of a passenger automobile, the piston including a ring carrier held in a piston basic body for accommodation of piston rings associated with the piston. In order to attain favorable transmission co... | 05/30/1989 |
| 4774917 | Piston and piston ring for an internal combustion engine An internal combustion engine includes a cylinder block, a piston and a piston ring. The cylinder block includes at least one cylinder bore which includes a cylinder bore surface. The piston is located within the cylinder bore of the cylinder block so as ... | 10/04/1988 |
| 4746582 | Ceramic-metal composite body A ceramic-metal composite body including (a) a ceramic member, (b) a ferrous metal member bonded to the ceramic member, (c) an intermediate metallic member joined to the iron base member, and (d) an aluminum member bonded to the intermediate metallic memb... | 05/24/1988 |
| 4742759 | Ceramic insert cast piston Disclosed herein is a ceramic insert cast piston for an internal combustion engine which includes a head made of ceramic, a metal ring fitted around the peripheral portion of the ceramic head, and a piston body made of a metal by casting a metal around th... | 05/10/1988 |
| 4741253 | Piston for internal combustion engines A piston for internal combustion engines is disclosed, which includes a piston main body of metallic material, and a ceramic piston head member embedded in the top portion of the piston main body. The piston head member is formed on its peripheral surface... | 05/03/1988 |
| 4735128 | Piston A piston for internal combustion engines made of a light alloy and comprising a skirt portion and a head portion, having a ceramic insert adapted on the head portion and connected to same by mechanical locking. The ceramic insert is provided with pores at... | 04/05/1988 |
| 4709621 | Internal combustion engine piston and a method of producing the same Disclosed herein is an internal combustion engine piston having a metal piston body and a piston cap constituted by a plurality of ceramic pieces and fixed to the top portion of the metal piston body, wherein the piston cap is composed of at least one kin... | 12/01/1987 |
| 4706550 | Metal matrix composite piston head and method of fabrication An aluminum torpedo piston is provided with a piston head fabricated from a etal matrix composite material composed of aluminum and silicon carbide fibers that are integrally joined by an inertial welding technique. A 23% weight of silicon carbide fibers t... | 11/17/1987 |
| 4679493 | Reinforced pistons A reinforced piston is provided for an internal combustion engine. The uppermost piston ring groove is as close as possible to the crown of the piston. At least the lower surface of the groove is defined by an en-cast insert and overlying this is a portio... | 07/14/1987 |
| 4677901 | Fiber-reinforced piston for internal combustion engines and associated method of construction A fiber-reinforced piston for internal combustion engines, comprising a molded body of inorganic fiber forming a top land and a ring region of the piston. The molded body has a content of granulated fiber having larger particles of a particle diameter les... | 07/07/1987 |
| 4658706 | Cast light metal component for internal combustion engines A cast light metal piston for internal combustion engines is provided with a ceramic insert in those zones which are highly thermally stressed and/or for heat insulation. To form a high-strength bond between the light metal and the insert, high-strength f... | 04/21/1987 |
| 4649806 | Composite ceramic/metal piston assembly and method of making An integrally cast composite piston assembly is disclosed which is effective to carry a ceramic plate in an iron based cap. The assembly comprises a cylindrical piston body, preferably of aluminum, having a crown top, an annular crown side wall with an up... | 03/17/1987 |
| 4648308 | Internal combustion engine piston and a method of producing the same Disclosed herein is an internal combustion engine piston comprising a piston cap formed from a plurality of ceramic pieces, and a metal piston body, the piston cap being fixed to the top portion of the metal piston body, wherein the piston cap is made of ... | 03/10/1987 |
| 4645716 | Flame spray material A flame spray material for producing a thermally shock and erosion resistant ceramic coating is comprised of a homogeneous ceramic composition formed of zirconium oxide, yttrium oxide and titanium oxide. The composition is preferably in the form of compos... | 02/24/1987 |
| 4643078 | Fiber-reinforced lightweight alloy piston for an internal-combustion engine and associated method A fiber-reinforced lighweight alloy piston for an internal-combustion engine, comprising a piston body having a compression ring groove whose bounding surface is reinforced with alumina fibers. At least those alumina fibers positioned in the region of the... | 02/17/1987 |
| 4599772 | Method for reinforcement of pistons of aluminum or aluminum alloy The reinforcement of the crown of a piston of aluminum or aluminum alloy for an internal combustion engine comprises the preparation of a reinforcement member (10, 13) which is provided with apertures (11, 14), or reentrants. The reinforcement member is p... | 07/15/1986 |
| 4592268 | Method of making and apparatus for composite pistons A composite piston structure and a method of making same is disclosed. A piston member, carrier member, and ceramic facing member are formed, the piston member being comprised of a material selected from plastic and metal having a density of less than 0.1... | 06/03/1986 |
| 4548126 | Piston with local inorganic fiber reinforcement and method of making the same An engine piston is formed with a top crown surface and a top ring groove. An upper annular land surface is defined between the top ring groove and the edge of the top crown surface. The upper annular land surface and the side walls of the top ring groove... | 10/22/1985 |
| 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 |
| 4524498 | Method and apparatus for modifying the combustion chamber of an engine to accept ceramic liners A method is disclosed of modifying a conventional internal combustion engine to accept ceramic material. A cast iron extension mamber is metallurgically joined to the cast iron engine block, the extension member having a wall defining a bore opening align... | 06/25/1985 |
| 4498219 | Method of constructing a fiber-reinforced piston for internal combustion engines A fiber-reinforced piston for internal combustion engines, comprising a molded body of inorganic fiber forming a top land and a ring region of the piston. The molded body has a content of granulated fiber having larger particles of a particle diameter les... | 02/12/1985 |
| 4495684 | Process of joining a ceramic insert which is adapted to be embedded in a light metal casting for use in internal combustion engines Ceramic inserts are embedded in thermally highly loaded zones and/or as a heat insulation in light metal castings for use in internal combustion engines. To provide a firm joint between the insert and the light metal, a metallic material which resists cre... | 01/29/1985 |
| 4488522 | Pistons including inserts A piston includes an insert, such as a piston ring insert or crown insert. In order to prevent the insert springing off the piston body in an axial direction, the insert is so formed with a recess or recesses which interlock with projections on the piston... | 12/18/1984 |
| 4364159 | Method for manufacturing a forged piston with reinforced ring groove The method effects a tight fit of a ferrous ring reinforcement at the head end of an aluminum alloy piston which tight fit remains during use of the piston. The procedural steps of the preferred method include: providing an aluminum alloy piston slug with... | 12/21/1982 |
| 4334507 | Piston for an internal combustion engine and method for producing same The invention provides a piston formed by casting a metal piston body under pressure around an insert, the body being made of aluminium or aluminium alloy and the insert being made of a porous layer having a thickness 20 to 50 times the pore diameter and ... | 06/15/1982 |
| 4138984 | Light alloy piston for diesel engines A light alloy piston for diesel engines includes a piston head coated with a hard annodized layer having a combustion chamber recess and/or a fuel-guiding channel provided adjacent to the edge of the combustion chamber recess and/or valve pockets. The pis... | 02/13/1979 |
