Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1979-10-17
1982-06-15
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74 36, 267 6411, B60G 1126, F16H 2508
Patent
active
043344372
ABSTRACT:
When a machine element having a large mass is given a reciprocating movement, the recurring changes in speed as well as direction of movement require that very great driving forces must be applied, which cause varying stresses on the driving unit. In case the movement path of the machine element is more or less vertical the force of gravity causes extra stresses on the machine element. These difficulties are overcome in accordance with the invention by providing a spring system which on the one hand equalizes the effect of the force of gravity on the machine element and, on the other hand compensates the arising mass forces by absorbing, storing and emitting energy following the movement of the machine element. Hereby the amount of applied driving force is reduced, so that shocks and vibrations occurring during the driving are effectively reduced.
REFERENCES:
patent: 1400974 (1921-12-01), Parker
patent: 1891340 (1932-12-01), Ammirandoli et al.
patent: 2333096 (1943-11-01), Dowty
patent: 3653682 (1972-04-01), Palmer et al.
patent: 3918237 (1975-11-01), Stark et al.
patent: 4033566 (1977-07-01), Peterson
patent: 4058301 (1977-11-01), Petrisko
"Which Shock Absorbing System Will Do the Job?", G. Reinert, Product Engineering, May 1, 1961, p. 41-45.
Staab Lawrence J.
Tetra Pak International AB
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