Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Including settable material – Adhesive encapsulated
Patent
1992-09-21
1994-06-28
Barefoot, Galen L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Including settable material
Adhesive encapsulated
244158R, F16B 4100
Patent
active
053241460
ABSTRACT:
An apparatus and method for fastening together spacecraft panels includes the use of fastener pairs, one of which has preformed therein an aperture which is larger in diameter than the body of a tolerance takeup piece which is to pass therethrough. A washer which takes up the clearance is adhesively fastened to one of the fastener halves, and allowed to cure while the panels are in their desired position. Thus, a high-tolerance mating pair can be finalized in position at a late state in fabrication, without undesirable drilling or reaming. In a first particular embodiment, a flat washer, having an inside diameter which closely fits the corresponding bolt, is adhesively fastened over the preformed oversize aperture of a fitting. In another embodiment, the washer has an inside diameter which loosely fits the body of the bolt, but also includes a flange or dependent portion which extends through the joint, and which closely fits the inside diameter of the corresponding aperture in the other half of the fastener arrangement. In a yet further embodiment, the washer includes a two-step flange which takes up both axial and lateral tolerances.
REFERENCES:
patent: 2235078 (1941-03-01), Meisterhans
patent: 2405925 (1946-08-01), Poupitch
patent: 3646982 (1972-03-01), Cushman
patent: 4010519 (1977-03-01), Worthing
patent: 4895484 (1990-01-01), Wilcox
patent: 4932805 (1990-06-01), Muller et al.
patent: 5145330 (1992-09-01), Uchiyama
Chen Wensen
Close John E.
DeStefano Joel
Homer Peter K.
Parenti Robert V.
Barefoot Galen L.
Berard C. A.
General Electric Co.
Meise W. H.
Young S. A.
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