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:
Nov. 01, 1988
Filed:
Jun. 03, 1986
BBC Brown, Boveri & Company, Ltd., Baden, CH;
Abstract
In the case of saddle-type rotor blades of axial-flow turbomachines, the locking blade (6a), without its root part engaging in the fir trees (2) on the radially outer part of the rotor disk (1), is located under a large prestress between its neighboring blades (6b, 6c). It is fastened in the root part by means of axial pins (7). The blade root (4') of the locking blade (6a) is dimensioned more narrowly in the region of its fir trees (2') in its axial extension than that (4) of the neighboring blades (6b, 6c). By this means, a removal recess (10) is produced on both the inlet and outlet sides, in each of which a compression jack (11) can be introduced for pressing apart the neighboring blades (6b, 6c). The locking blade, relieved of loads in this manner, can be removed without being destroyed.