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US 9,175,713 B2Granted
Bolt for gas turbine engine rotor
AssigneePratt & Whitney Canada Corp.
InventorsRaman Warikoo, Sergey Platonov
Life of this patent
Estimating the term…
Abstract
The bolt has, in sequence along a bolt axis: a threaded portion, a thread run-out portion, a shank, and a head, the threaded portion having a thread with a given root radius and a given depth, the thread run-out portion connected to the shank via a thread run-out fillet having a thread run-out fillet radius, the thread run-out fillet radius being between two and six times the thread root radius.
Claims11
A bolt comprising in sequence, along a bolt axis:
- a threaded portion, a thread run-out portion, a shank, and a head, the threaded portion having a thread with a predetermined root radius and a predetermined depth, the thread run-out portion connected to the shank via a thread run-out fillet having an average radius of curvature comprised between two and six times the root radius;
- wherein the thread depth fades out at the thread run-out portion.
Dependencies are inferred from the claim text.