Oiles Corporation

Maki Hirayama

Taku Watakabe

Kentaro Okubo

Vernon Harold Bryant

Hiroshi Suda

A bearing bushfor use in a toggle has a cylindrical metallic base materialand a solid lubricantembedded in the metallic base material, and the metallic base materialhas dead end groovesformed in a cylindrical inner peripheral surface, an annular grooveformed in the cylindrical inner peripheral surface, and circular holesandas well asandformed in each of a pair of semicylindrical inner peripheral surfacesandadjacent to each other in an axial direction X and two pairs of semicylindrical inner peripheral surfacesandsandwiching the pair of semicylindrical inner peripheral surfacesandin a circumferential direction R and adjacent to each other in the axial direction X in each pair.

Bearing bush for use in toggle

High-strength brass alloy having superior wear maintains single-structure &#x3b2; phase and Fe&#x2014;Cr&#x2014;Si-based intermetallic compounds dispersed in the &#x3b2; phase. A high-strength brass alloy for sliding member comprises Zn from 17% to 28%, Al from 3% to 10%, Fe from 1% to 4%, Cr from 0.1% to 4%, Si from 0.5% to 3%, mass ratio, and the remnant including Cu and inevitable impurities. The high-strength brass alloy has structure in which the matrix shows single-phase structure of &#x3b2; phase and Fe&#x2014;Cr&#x2014;Si-based intermetallic compounds are dispersed in the &#x3b2; phase. The high-strength brass alloy for sliding member has the structure in which the matrix shows single-structure of &#x3b2; phase and hard Fe&#x2014;Cr&#x2014;Si-based intermetallic compounds are dispersed in the &#x3b2; phase. Thus the hardness is increased and wear resistance is improved.

High-strength brass alloy for sliding member, and sliding member

High-strength brass alloy having superior wear maintains single-structure &#x3b2; phase and Fe-Cr-Si-based intermetallic compounds dispersed in the &#x3b2; phase. A high-strength brass alloy for sliding member comprises, Zn from 17% to 28%, Al from 3% to 10%, Fe from 1% to 4%, Cr from 0.1% to 4%, Si from 0.5% to 3%, mass ratio, and the remnant including Cu and inevitable impurities. The high-strength brass alloy has structure in which the matrix shows single-phase structure of &#x3b2; phase and Fe-Cr-Si-based intermetallic compounds are dispersed in the &#x3b2; phase. The high-strength brass alloy for sliding member has the structure in which the matrix shows single-structure of &#x3b2; phase and hard Fe-Cr-Si-based intermetallic compounds are dispersed in the &#x3b2; phase. Thus the hardness is increased and wear resistance is improved.

A lock gate door () includes a pair of door bodies (); a pair of spherical bearings () for a lock gate door for rotatably supporting lower corner portions () of the door bodies (), respectively; and a pair of supporting portions () for rotatably supporting upper corner portions () of the door bodies (), respectively. The spherical bearing () includes a convex curved body () having a spherical surface () and a concave curved seat () having a toroidal curved surface () which slidably contacts the convex curved body (), and is disposed on a downstream () side of a waterway () with respect to the supporting portion () in such a manner as to incline a rotational axis (C).

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Fujisawa, Japan

Maki Hirayama