Abrégé

A finger joint having a bridging cover plate, which enables a steel plate having a thickness much smaller than that of a conventional finger to be used and allows the vertical rotation of an upper bridge structure. The finger joint includes: a bridging cover plate installed on a first structure and supported to a second structure across a gap so as to support a load of a vehicle passing over the gap, and configured to allow relative movement between the first structure and the second structure in a direction in which the distance of the gap changes; a first finger unit connected to the bridging cover plate; and a second finger unit installed on the second structure so as to allow relative movement relative to the first finger unit in a direction in which the distance of the gap changes.

Classes IPC  ?

• E01D 19/06 - Disposition, structure ou recouvrement des joints de dilatation
• E01C 11/02 - Disposition ou structure des jointsProcessus de fabrication des jointsGarnissage pour joints
• E01D 19/04 - PaliersArticulations
• E01D 15/00 - Ponts mobiles ou transportablesPonts flottants

Abrégé

A spherical bearing is disclosed, which is easy to make, can be made small, and does not have a sticking problem of a spherical block. The spherical bearing includes a plastic spherical block made of plastic and including a convex spherical surface, a spherical groove member including a spherical groove with which the convex spherical surface engages and surface-contacts and allowing rotation with respect to the plastic spherical block, and a weight-delivering member installed opposite to the spherical groove member with the plastic spherical block in the middle, and wherein a frictional surface of the plastic spherical block rubbing against the spherical groove member or the weight-delivering member is made of engineering plastic such as PA, POM etc. having a hardness of 75D through 95D.

Classes IPC  ?

• F16C 29/02 - Paliers à contact lisse
• E01D 19/04 - PaliersArticulations
• F16C 13/04 - Paliers n’enfermant que partiellement l’organe à supporterPaliers avec support local en plusieurs points
• F16C 13/06 - Paliers à autoréglage