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:
Feb. 03, 1976
Filed:
Mar. 21, 1974
James T Dixon, Tequesta, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An engine is shown having means for providing cooling fluid to turbine blades on a disk while providing sealing means between the blade roots and cooperating disk slots and providing means for retaining the turbine blades on their disk. The device comprises a full ring coverplate which engages a small coverplate fixed to each blade. A small coverplate is fixed, such as by bonding, to the forward end of the root section of each blade and contoured so that it extends over the edges of the root and bears against the forward side of the disk when the blade root has been inserted in a blade slot. The blades are held in the disk by the full ring coverplate which engages all of the small coverplates at a midpoint between the inner and outer ends of the root. The position of the full ring coverplate can be adjusted to provide and vary a biasing force against the small coverplates to maintain a force keeping the small coverplates against the disk. Cooling air is injected at the inner diameter of the full ring coverplate and is directed to a hole in each of the small coverplates which permits the cooling air to enter the inside of the hollow blade. The full ring coverplate also acts as a forward disk seal.