Abstract: The invention relates to a conveyor chain having a number of links connected by cardan joints. Each link has a main portion (2) and a fork portion (3, 4) the fork surrounding the main portion of an adjacent link. A rotatable element (6) is arranged in a bore (5) in the main portion and a pin (7) extends into each fork leg from the rotatable element. In order to improve strength and provide largest possible contact surfaces in the members possible against the pin, the pin is fixed in the element (6) and slidable in bores (9) in parts (10, 11) extending from the respective fork legs.

Abstract: A ball bearing for linear movement on a shaft has a cage with oval guideways, and an outer sleeve surrounding the case. The cage has axially extending raceways for guiding loaded balls, the ends of the raceways joining radially outwardly directed transitions. The transitions are weakened by transversely extending grooves or slots, to provide resilience. The raceways may be axially extending radially inwardly directed ridges having central axially extending grooves, and the transitions may have V-shaped recesses with their apices at the ends of the grooves, to define two-point contact with the balls in the transition area of the bearing. A split sleeve may surround the outer sleeve for additional support.

Abstract: A taper adapter sleeve for mounting an element with a bore, for example a roller bearing, on an axle journal or the like, characterized in that it comprises a portion, the inner and/or outer surface of which is provided about its circumference with axially directed grooves and ridges, and that the crests of said ridges define a circumscribed or inscribed cone or cylinder.