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:
Apr. 30, 2002
Filed:
Oct. 21, 1999
John V. Bouyoucos, Rochester, NY (US);
Dennis R. Courtright, Canandagua, NY (US);
Hydroacoustics, Inc., Rochester, NY (US);
Abstract
An electrohydraulic pavement breaker system having cavities ( ) which are filled with hydraulic fluid (oil) or gas, and which provide mass spring system which is resonant at a frequency which is especially adapted for breaking and rubblizing concrete pavement. The resonant mass ( ) is in impacting relationship with the pavement through a shoe ( ), which shoe ( ) may be part of an assembly which is pivotally mounted on the support structure ( ) of the breaker and is vibrated with the mass ( ) to repeatedly impact the pavement at the rate of the resonant frequency. An electrohydraulic control system is responsive to the motion and average position of the mass of the vibrator and controls the driving force so as to be at the resonant frequency of the mass spring system and have the amplitude and energy suitable for breaking the pavement.