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:
Mar. 19, 1991
Filed:
Aug. 22, 1986
Graham S Hawkes, Oakland, CA (US);
Deep Ocean Engineering Incorporated, Oakland, CA (US);
Abstract
A powered, electromechanical manipulator assembly is disclosed which includes an electrically powered input device coupled by a hydraulic circuit to a mechanical manipulator. The hydraulic circuit is a fixed-volume, closed circuit in which a master piston-cylinder assembly is driven by a D.C. motor and is hydraulically coupled for direct and proportional displacement of a slave piston-cylinder assembly to enable smooth, accurate and easily controlled displacement of a manipulator arm. The manipulator arm is formed of a plurality of modules each having a fixed- volume, closed, hydraulic circuit and a slave cylinder. Both the slave and master cylinders include ambient pressure surfaces which are exposed to the water pressure at the operating depth of the assembly so that variation in depth does not materially affect the response or dexterity of the remote manipulator apparatus. An improved terminal module or jaw assembly is also disclosed.