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. 01, 1992
Filed:
Aug. 08, 1991
Gerard R Vermont, Coubert, FR;
Abstract
A fan for a turboshaft engine is disclosed comprising a rotatable disc having an array of blades secured at evenly spaced intervals around its periphery, each pair of successive blades and the disc defining a space which is delimited by the stem and a platform of a first of the two blades, the stem and a platform of the second of the two blades, and the periphery of the disc between the two blades. In order to reduce vibration during operation of the fan, each of the spaces houses a flyweight and a pair of rigid rockers disposed between the flyweight and the stems and platforms of the first and second blades delimiting the space such that, under the action of centrifugal force generated by rotation of the disc, the flyweight acts on the first and second blades through the rockers, the two rockers mutually engaging each other while a first of the rockers bears on the stem and the platform of the first blade at separate positions, the second of the two rockers bears on the stem and the platform of the second blade at separate positions, and the flyweight bears on both the first and the second rockers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile