Material or article handling – Vertically swinging load support
Patent
1983-04-30
1986-08-19
Underwood, Donald W.
Material or article handling
Vertically swinging load support
212156, 414730, 901 9, 901 47, B25J 916
Patent
active
046066918
ABSTRACT:
A system designed to reduce cantilever beam deflections is disclosed. Beam deflection is reduced by neutralizing the force causing such deflection. The neutralizing force is achieved by employing a second cantilever beam parallel with the first and connecting the distal ends of the two beams through an active positioning system. In operation, a force applied to the end of the reference beam, in any direction perpendicular to the length of the beam, is in effect, automatically transferred to the second beam. Thus the second beam bends by an amount proportional to the magnitude of the force, while the reference beams remains in the original position. The end result is a beam whose distal end is located in a unique position relative to the proximal end regardless of any disturbance forces acting upon it.
REFERENCES:
patent: 3775012 (1973-11-01), Ling et al.
patent: 3972429 (1976-08-01), Sigott et al.
patent: 4119212 (1978-10-01), Flemming
patent: 4285627 (1981-08-01), Oswald et al.
Automotive Parts & Accessories, J. C. Whitney & Co., Catalog #386B, copyright 1979, p. 117.
R. Klein and C. Nachtigal, The Application of Active Control to Improve Boring Bar Performance, Journal of Dynamic Systems, Measurements, and Control, Jun. 1975, beginning at p. 179.
Malin Eugene F.
Underwood Donald W.
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