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:
Sep. 04, 1984
Filed:
Aug. 17, 1981
Applicant:
Inventor:
Frederick J Ebert, Elmwood Park, NJ (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G05B / ; G01G / ;
U.S. Cl.
CPC ...
364508 ; 364509 ; 364463 ; 73570 ; 73579 ; 73583 ; 416500 ; 1883225 ;
Abstract
A variable frequency vibration controller includes a cantilever beam supported from the vibration prone structure whose vibrations are to be controlled. The cantilever beam has selectively shaped hollow interior portions into which fluid can be selectively injected or withdrawn to vary the total mass of the cantilever beam. The cantilever beam natural frequency is thus tuned to match or selectively mismatch the frequency at which the vibration prone structure is vibrating. Thereby, the beam is used to optimally absorb or excite the vibrations of the structure.