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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7584694 | Composite piston for an internal combustion engine The invention relates to an assembled piston (1) for an internal combustion engine, said piston consisting of an upper part (4) provided with a combustion cavity (8), and a lower part (5) that is screwed to the upper part (4) by me... | 09/08/2009 |
| 5305684 | Piston for internal combustion engines and like machines A piston for a combustion engine includes an external cylindrical body having an inner cavity. In the inner cavity is a partly spherical little-end of a connecting rod and a fluidtight shell or hemispherical dome. An edge portion of the dome is annularly ... | 04/26/1994 |
| 5092290 | Engine piston assembly with planar pin mounting surface An internal combustion engine piston assembly is provided wherein the underside of the piston has planar load bearing surfaces disposed perpendicularly to the axis thereof and the ends of the piston pin are provided with mating planar surfaces for fasteni... | 03/03/1992 |
| 5029562 | Hybrid piston for high temperature engine Piston has upper and lower portions. The upper portion includes a cylinder engaging surface, such as a piston ring, comprised of solid lubricant. The lower portion includes a cylinder engaging surface comprised of liquid lubricant control means. The dista... | 07/09/1991 |
| 4932314 | Segmented piston A split piston in an internal combustion engine, having a base rockably secured to the connecting rod, and a detachable ring head which interfaces with the cylinder wall. The detachable ring head is snugly fitted onto a cylindrical extension of the base h... | 06/12/1990 |
| 4751871 | Multisectional piston with plural ceramic parts and rigidly connected piston rod for use in horizontally opposed piston internal combustion engine A multisectional piston for opposed-piston, slider-crank-drive internal combustion engines. The piston has a ceramic skirt (1), a skirt head (2), and a ceramic piston head (3) with fire land (4). The ceramic piston head is provided with annular groove (6)... | 06/21/1988 |
| 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 |
| 4714008 | Piston for internal combustion engines and the like An improved piston for operation within a cylinder. The piston includes a main piston body having a primary cylindrical surface, a first end, and a secondary surface of smaller diameter, the secondary surface of smaller diameter is disposed between the pr... | 12/22/1987 |
| 4614150 | Built-up piston A built-up piston in which the piston top (11) and piston bottom part (13) are clamped together by two necked-down bolts (15) by means of nuts (16). The nuts include an extension (21) having an external thread (22), by means of which they are screwed into... | 09/30/1986 |
| 4548127 | Piston for internal combustion engine A piston for an internal combustion engine comprising a piston body (1) and a crown portion (3) that are connected by anchoring means comprising elongate members (7,23,26,79,80) that extend from the crown portion (3) into the piston body (1) so as to tran... | 10/22/1985 |
| 4372194 | Internal combustion engine piston Internal combustion engine piston of the composite type, having a steel upper portion surmounting an aluminum lower portion in which the piston ring grooves are provided. The lower portion (2) comprises a concentric circular cavity (3), open at the top an... | 02/08/1983 |
| 4242948 | Insulated composite piston The disclosure illustrates an insulated composite piston comprising a crown of ceramic or other heat resistant material secured to an aluminum piston body by a bolt of temperature resistant alloy. A low conductivity interface between the crown and the bod... | 01/06/1981 |
| 4230026 | Reciprocating piston device A reciprocating piston device, such as a pressure pump, a vacuum pump or a compressor comprising a cylinder and a piston reciprocable in the cylinder. The piston includes a piston body having a cavity therein and a pivot arm mounted on the piston body for... | 10/28/1980 |
| 4114519 | Pistons A piston having a crown and a body connected together by bolts. The bolts pass through an annular gap defined by a pair of concentric ring members located between the crown and the body. One of the ring members is relatively resilient and the other ring m... | 09/19/1978 |
| 4073221 | Light-weight piston assemblies An improved piston assembly including a generally cylindrical piston body having a crown and a depending skirt and being formed of a light-weight metal, an annular ring groove protection band formed of a hard metal disposed about the body adjacent the cro... | 02/14/1978 |
| 4072088 | Light-weight piston assemblies A light weight piston assembly including a piston body formed of a light-weight metal and having a crown and a depending skirt, an annular recess about the end of the body adjacent the crown and opening toward the crown, the portion of the recess immediat... | 02/07/1978 |
| 3968737 | Disjoinable assembly designed for connecting of piston with piston rod in engines and machines, particularly suitable for use in compressors A disjoinable assembly designed for connecting of piston with piston rod in ngines and machines, this assembly being particularly suitable for use in compressors, includes an insert [4] and a bolt connector [3] mounted in the said insert, said connector co... | 07/13/1976 |
