Machine element or mechanism – Mechanical movements – Oscillating to oscillating
Patent
1984-08-30
1986-02-04
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Oscillating to oscillating
74519, F16H 2144
Patent
active
045677824
ABSTRACT:
A compound parallelogram four-bar linkage is provided wherein a first primary link is connected to a second primary link through connector links of substantially the same length and the pivotal angles of the first primary link and second primary link are maintained at substantially ninety degrees as movement is transferred from one primary link to the other so that the resonant frequency of the linkage does not vary and the linkage stiffness is independent of the angle of rotation.
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Ingenious Mechanisms for Designers & Inventors, vol. IV, pp. 246-247, 1st Printing 1967.
Speicher John M.
Voigt Allan A.
General Dynamics Pomona Division
Johnson Edward B.
Lindsay John R.
Martin Neil F.
Staab Lawrence J.
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