Reciprocating piston combustion engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20100077984A1
SERIAL NO

11919372

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Abstract

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A reciprocating piston combustion engine with at least one cylinder (2) in which a piston (1) is located, so it can be moved in a reciprocating manner; a first crankshaft (4); a second crankshaft (6); wherein the first crankshaft (4) and the second crankshaft (6) extend parallel to each other and rotate synchronously in opposite directions; wherein the rotation axes (X, X') of the two crankshafts (4, 6) extend parallel to a common cylinder midplane (Z) and laterally offset relative to it; wherein a first piston rod and second piston rod (3, 5) are arranged at the reciprocating piston (1), so that the first piston rod (3) is pivotably connected to the to the reciprocating piston (1) with its first end and rotatably connected to a crankpin (40) of the first crankshaft (4), and that the second piston rod (5) is pivotably connected with its first end to the reciprocating piston (1), and rotatably connected to the crankpin (60) of the second crankshaft (6) with its second end, and wherein the crankshafts (4, 6) are engaged with each other through synchronizing gears (42, 62), is characterized in, that the two crankshafts (4, 6) are supported in at least one common bearing block (7; 107; 207); that the bearing block (7, 107, 207) is made of a material with a first thermal expansion coefficient, that the synchronizing gears (42, 62) are made of a material with a second thermal expansion coefficient, and that the dimensions in the radial direction of the bearing block (7; 107; 207) and of the synchronizing gears (42, 62), and the first and the second thermal expansion coefficients, are matched in such a manner, that the thermal expansion of the bearing block (7; 107; 207) occurring between the two rotation axes (X, X') of the bearing block (7; 107; 207) is substantial equal to the thermal expansion of the synchronizing gears (42, 62).

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Patent Owner(s)

Patent OwnerAddress
NEANDER MOTORS AGWERFTBAHNSTR 8 KIEL 24143

International Classification(s)

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  • 2006 Application Filing Year
  • F02B Class
  • 869 Applications Filed
  • 418 Patents Issued To-Date
  • 48.11 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20062007200820092010201120122013201420152016201720180255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baindl, Rupert Geretsried, DE 5 7
Betzmeir, Helmut Ottobrunn, DE 5 39

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Patent Citation Ranking

  • 3 Citation Count
  • F02B Class
  • 5.31 % this patent is cited more than
  • 15 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges131594517442101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6071 - 800102030405060708090100110120130140150160170

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