Transmission chain

• US 8,029,398 B2
• Filed: 09/05/2008
• Issued: 10/04/2011
• Est. Priority Date: 09/07/2007
• Status: Expired due to Fees

• Current Assignee: Punch Powertrain N.V. (Xu Qiang Xiong,)
• Original Assignee: Gear Chain Industrial B.V.
• Inventors: Van Rooij, Jacobus Hubertus Maria
• Primary Examiner(s): Dondero; William E
• Application Number:
  US12/230,869
• Publication Number:
  US 20090069137A1
• Time in Patent Office: 1,124 Days
• Field of Search: 474/201, 474/202, 474/204, 474/206, 474/212, 474/214, 474/215, 474/229, 474/230, 474/238, 474/242
• US Class Current: 474/229
• CPC Class Codes: F16G 5/18 in the form of links

Abstract

Transmission chain with links coupled by rocker assemblies with each two longitudinal pins which roll over each other and of which one cooperates in a force transmitting way with the opposite pulleys of a pair of cone-shaped pulley sheaves, and these pins have a first dimension (b) in the longitudinal direction, a second dimension (h) perpendicular to the longitudinal direction and to the running direction of the chain and a third dimension (d) cross-wise to the longitudinal direction and in the running direction, in which for each value of the first dimension (b) both other dimensions (h) and (d), respectively, are such that the ratio between this dimension (b) and each of the other dimensions, is, taking into account the expected loading of the chain, as small as possible.

Claims

1. A transmission chain with links mutually coupled by rocker assemblies, which each comprise a first and a second elongated pin, of which the first pin rolls during operation with a curved longitudinal surface over an opposite longitudinal surface of the second pin, while in each rocker assembly the first pin is destined to cooperate in a force transferring way with an opposite cone pulley of a pair of pulley sheaves, and the first pin has a first dimension (b) in the longitudinal direction thereof, a second dimension (h) in a direction perpendicular to the longitudinal direction as well as to the running direction of the chain in which said pin is accommodated and a third dimension (d) cross-wise to the longitudinal direction and in the running direction, wherein for each value of the first dimension (b), as determined by the preferred width of the chain, the second and third dimensions (h) and (d) respectively, are chosen such that the respective ratio between the first dimension (b) and the second dimension (h) is less than or equal to approximately 4.1, and the ratio between the first dimension (b) and the third dimension (d) is less than or equal to approximately 8.2.