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:
Jan. 09, 1979
Filed:
Jan. 14, 1977
Applicant:
Inventor:
Stephen H Salter, Edinburgh, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03B / ;
U.S. Cl.
CPC ...
290 42 ; 290 43 ;
Abstract
In a nodding duck for extracting power from waves on water, a control system is incorporated for generating a feedback force related to one or more of the parameters of movement, viz. the displacement position, velocity or acceleration of the duck. The relationship between the feedback force and the parameter is chosen to control the response of the duck for example to enhance the coupling between waves and the duck over a broader range of wave frequencies than would be practicable in the absence of the control system.