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. 09, 1986
Filed:
Dec. 18, 1984
Applicant:
Inventors:
Fred R Stolfi, Shrub Oak, NY (US);
Paul J Shapiro, New York, NY (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ;
U.S. Cl.
CPC ...
62-6 ; 60520 ;
Abstract
A vibration balancing arrangement utilizing a counterbalance mass oscillating at a frequency near its resonant frequency. Resonance is obtained by a gas spring, in which the length of the compression region for the gas is variable to vary the resonant frequency by adjusting the center point of the oscillation of the counterbalance mass.