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. 22, 1985
Filed:
Mar. 22, 1982
Michael Hahn, Ottobrunn, DE;
Franz Sperber, Kolbermoor, DE;
Abstract
A large surface structural component, such as a rotor blade for a windmill r a blade root for a windmill rotor, includes a hollow core (6) of foam material supporting a shell (8, 11) of fiber reinforced synthetic material. Positive templates in the form of disks (5) are inserted into the core (6). These templates are preferably spaced from each other along the length of the structural component and have a shape which defines the cross-sectional contour of the finished component. Thus, initially foam sections having a shape convenient for their production and these templates are assembled on a rotatable arbor (2) which is then rotated in a machining operation such as cutting and/or grinding on a lathe type machine. The shape of these templates (5) provides a guide for the machining operation which is thus substantially facilitated while simultaneously permitting the use of foam cores having initially plane surfaces.