Jerry D Potter

US Patent:

46456392, Feb 24, 1987

Filed:

Mar 30, 1984

Appl. No.:

6/595231

Inventors:

Jerry D. Potter - Kennewick WA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G21C 2100
F16D 1104
B65B 104
B65B 510

US Classification:

376260

Abstract:

A pushrod assembly including a carriage mounted on a shaft for movement therealong and carrying a pushrod engageable with a load to be moved. A magnet is mounted on a supporting bracket for movement along such shaft. Means are provided for adjustably spacing said magnet away from said carriage to obtain a selected magnetic attractive or coupling force therebetween. Movement of the supporting bracket and the magnet carried thereby pulls the carriage along with it until the selected magnetic force is exceeded by a resistance load acting on the carriage.