Rocker arm/spring assembly

Details Rocker arm/spring assembly Rocker arm/spring assembly

1985-11-14

1987-05-26

Rutledge, L. Dewayne

Metallurgical apparatus

Means sealing or opening aperture in vessel

266287, 222600, B22D 4108

Patent

active

046679383

ABSTRACT:
A rocker arm/spring assembly which can be readily removed without the use of any tools whenever the refractory is removed from the valve is disclosed. Since the refractory is regularly removed from the valve, the rocker arm and spring assembly can be removed, and the springs replaced and tested readily. The rocker arm is provided with a keyhole mount including a bolt shank slot, a seat bore, a bolt head port, and a bolt spherical head seat. The rocker bolt is secured to the frame and has a spherical head which is slightly smaller than the bolt head port which permits the rocker arm to be passed over the fixed head of the rocker bolt, and then shifted laterally until the shank of the rocker bolt is nested within the bolt shank slot of the rocker arm, and the spherical head of the bolt engages the spherical head seat in the underportion of the rocker arm. The spring is nested within a spring assembly bore which is of essentially uniform diameter, with a spring pad at the bottom portion having a spring pad shank to receive a coiled spring, and terminates in a spring seat at its upper portion. Thus the spring and pad assembly are inserted into the spring assembly bore prior to the rocker arm being positioned and thereafter all is secured in place when the refractories are under pressure.

REFERENCES:
patent: Re27237 (1971-11-01), Shapland
patent: 3270995 (1966-09-01), Shears
patent: 3918613 (1975-11-01), Shapland, Jr.
patent: 4253647 (1981-03-01), Andres
patent: 4545512 (1985-10-01), Shapland et al.

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