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:
Jul. 07, 1992
Filed:
Jun. 27, 1991
Gordon E Whelpley, Chandler, AZ (US);
John F Thurston, Mesa, AZ (US);
Allied-Signal Inc., Morris Township, Morris County, NJ (US);
Abstract
A vibration cancellation mount for use in a vibration cancellation system is provided that includes a fluidic driver providing a modulated air stream to an elastomeric air spring. The pressure of the air stream is caused to fluctuate by an acoustical cancelling signal generated by an electroacoustic transducer electrically coupled to cancellation controller. As this pressure varies the air spring is filled and vented so that it responds at the same frequency and phase as the cancellation signal and thereby cancels the vibrations emanating from a vibrating structure mounted thereto. By employing a fluidic driver, the vibration cancellation mount is not frequency limited and can cancel vibrations having frequencies anywhere in the audio frequency spectrum.