Telescopic universal transmission joint employing intermediate block elements having cylindrical and spherical bearing surfaces
AssigneeGlaenzer Spicer
InventorMichel Orain
Life of this patent
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Abstract
A joint comprises a tripod equipped with three spherical pivots, and a barrel with six cylindrical inner tracks. Intermediate elements comprise a cylindrical surface complementary with the spherical pivot and a surface of circular profile complementary with the circular profile of the tracks. The intermediate elements are blocks, the surface of circular profile of which is a cylindrical surface permanently bearing slidably in the tracks. The joint enables reducing the contact pressures, increasing the telescopic stroke, simplifying the form of the intermediate elements and making it possible to produce them from a material of moderate hardness.
Claims16
A telescopic universal transmission joint, comprising:
- a first element having an axis and six complementary and substantially spherical bearing regions having centers distributed about said axis of said first element;
- a second element having an axis and six substantially cylindrical longitudinal tracks of complementary profile having axes thereof distributed about said axis of said second element;
- and
- six intermediate elements connecting said first element to said second element in an articulated and telescopic manner, each said intermediate element comprising a substantially spherical surface bearing slidably on a respective one of said six complementary and substantially spherical bearing regions of said first element and a surface of substantially circular cross-section, comprising a cylindrical surface, which bears on a respective one of said six substantially cylindrical longitudinal tracks of complementary profile of said second element, wherein each said intermediate element is a block and said cylindrical surface of said block bears permanently and slidably on the respective said substantially cylindrical longitudinal track of said second element.
Dependencies are inferred from the claim text.