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. 30, 2025
Filed:
Aug. 24, 2023
Liftra Ip Aps, Aalborg SV, DK;
Per Eske Fenger, Terndrup, DK;
LIFTRA IP APS, Aalborg, DK;
Abstract
A counterweight tool comprising an attachment element, a lever arm, a weight element, a first locking mechanism, and a first crane connection point. The attachment element being arranged to be attachable to a component of a wind turbine. The lever arm is pivotably connected to the attachment element about a pivot point, said lever arm being pivotable between a first position where the lever arm is arranged at a first angle with respect to the attachment element and a second position where the lever arm is arranged at a second angle with respect to the attachment element, the difference between the first and second angles being greater than 25 degrees. The weight element is attached to the lever arm at a distance from the pivot point, the first locking mechanism being arranged to lock the position of the lever arm with respect to the attachment element in the second position. The first crane connection point being arranged such that when a crane lifts the counterweight tool, by the first crane connection point, the lever arm will be arranged at an angle to the vertical of less than 30 degrees and when the attachment element is fixed in position relative to the crane then lifting or lowering by the crane via the first crane connection point will cause the lever arm to pivot about the pivot point from the first position to the second position. In this way a counterweight tool is provided which has a small horizontal dimension during the initial lifting phase, but which can easily be changed into an effective counterweight tool by just using the lifting capabilities of the crane.