Mechanical fuse and method of manufacturing the same

Details Mechanical fuse and method of manufacturing the same Mechanical fuse and method of manufacturing the same

2007-01-02

2007-01-02

Lavilla, Michael E. (Department: 1775)

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Overload release coupling

Torque transmitted via frangible element

C428S566000, C428S613000, C428S632000, C428S681000, C428S684000, C428S704000

Reexamination Certificate

active

09993562

ABSTRACT:
An inexpensive mechanical fuse having a high fatigue limit ratio and high rupture reliability, and superior in forming performance, and a method of manufacturing the same are presented. The mechanical fuse is composed of Fe-based sintered alloy, and comprises an inner rim2fixed to one power transmission shaft, an outer rim3fixed to the other power transmission shaft, and plural arms4for linking the inner rim2and outer rim3, which are formed integrally. The arms4include rupture portions6which are ruptured when exposed to an overload torque. By treating in steam, an iron oxide phase is formed in the surface layer and pore inner wall. The iron oxide phase is effective to form round pores and lower the notch sensitivity. As a result, the fatigue strength and fatigue limit ratio are enhanced.

REFERENCES:
patent: 3956531 (1976-05-01), Church et al.
patent: 4504312 (1985-03-01), Oaku et al.
patent: 4836848 (1989-06-01), Mayama et al.
patent: 4846769 (1989-07-01), Allen
patent: 4943321 (1990-07-01), Akutsu
patent: 5049183 (1991-09-01), Saka et al.
patent: 5427600 (1995-06-01), Itoh et al.
patent: 5561834 (1996-10-01), Score
patent: 5703304 (1997-12-01), Lindberg et al.
patent: 5800137 (1998-09-01), Eitai et al.
patent: 5800636 (1998-09-01), Tsukada et al.
patent: 5873784 (1999-02-01), Iwasaki et al.
patent: 6068452 (2000-05-01), Okada et al.
patent: 6332842 (2001-12-01), Tabuchi et al.
patent: 37 44 550 (1988-09-01), None
patent: 38 08 460 (1988-09-01), None
patent: 40 31 408 (1991-04-01), None
patent: 44 37 452 (1995-04-01), None
patent: 198 12 312 (1998-10-01), None
patent: 199 21 934 (2000-11-01), None
patent: 0 499 392 (1992-08-01), None
patent: 07-112231 (1995-05-01), None
patent: WO 97/47418 (1997-12-01), None

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