The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1986
Filed:
Aug. 30, 1984
Applicant:
Inventors:
John M Speicher, Upland, CA (US);
Allan A Voigt, Anaheim, CA (US);
Assignee:
General Dynamics Pomona Division, Pomona, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74 96 ; 74519 ;
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.