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US 4,749,298 AGranted
Temperature resistant fastener arrangement
AssigneeUnited Technologies Corporation
InventorsEdgar Bundt, Anthony M. Zimmerman
Life of this patent
Estimating the term…
Abstract
A fastener (24) secures a thin sheet liner (16) to a supportive substrate (10) for protection against an adjacent high temperature environment (12). Cooling air (20) flows through a plurality of openings (34) and impinges (36) on the fastener (24). The fastener (24) is received within a dimple (32) in the liner (16) and includes an enlarged head portion (38).
Claims7
A temperature resistant fastener arrangement comprising:
- a supporting substrate, disposed adjacent a flow of relatively hot gas;
- a protective sheet liner, disposed between the substrate and the hot gas flow, the liner being substantially uniformly spaced from the substrate and having one side thereof in contact with the hot gas;
- a fastener having a first portion extending through the liner, including a first end releasably secured to the substrate and a second end contacting the hot gas flow;
- wherein the liner includes a plurality of openings, disposed adjacent the fastener for directing a flow of cooling gas from between the liner and substrate to impinge against the second end of the fastener.
1 more element
Means for securing a thermally protective thin sheet liner to an underlying substrate for protection against an adjacent high temperature environment, comprising:
- a dimple, disposed in the high temperature environment facing side of the thin sheet liner and contacting the supportive substrate;
- a fastener, disposed within the liner and releasably secured to the substrate, the fastener having at least a portion thereof exposed to the high temperature environment;
- a plurality of cooling holes disposed in the dimple and oriented so as to direct a flow of cooling air from under the liner to impinge upon the exposed fastener portion.
Dependencies are inferred from the claim text.