Title:
【発明の名称】自動的に接続、遮断され得る回転モーメント伝達用ハイドロリック、カップリング
Document Type and Number:
Japanese Patent JPH02504528
Kind Code:
A
Abstract:
Fluid friction coupling for automatic engagement and disengagement of torque transmission, when the input or output side of the clutch exceeds or falls below a difference in speed, in particular for automatic engagement and disengagement of multiple-wheel drives of motor vehicles, with a working fluid consisting of a dilatant fluid, characterized in that the working fluid is an extremely dilatant copolymer dispersion whose characteristic dilation values, namely critical shear rate gamma k and maximum transmissible shearing strain tau max, are stabilized to permanent loading by emulsion polymerization with an additional 5 to 30 wt. %, preferably 8 to 18 wt. %, referred to the finished polymerizate, of (meth)alkyl compounds with at least 2 polymerizable double bonds in the molecule, e.g. dialkylephthalate and/or (meth)alkyl(meth)acrylates as comonomers.
Inventors:
Bung, Richard
Maroon, martin
Lewis, Gert
Schmidt, Franz
Maroon, martin
Lewis, Gert
Schmidt, Franz
Application Number:
JP50551889A
Publication Date:
December 20, 1990
Filing Date:
May 30, 1989
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
B60K17/34; B60K17/346; B60K17/35; C10M145/04; C10M145/14; F16D35/00; C10N20/00; C10N40/08; (IPC1-7): B60K17/34; C10M145/04; C10M145/14; C10N20/00; C10N40/08; F16D35/00
Attorney, Agent or Firm:
Tajiro Taiji