Method for plugging an aperture with a heat recoverable plug

Details Method for plugging an aperture with a heat recoverable plug Method for plugging an aperture with a heat recoverable plug

1975-06-03

1977-01-11

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

148 115F, 220201, 220307, B23P 1102

Patent

active

040019284

ABSTRACT:
A device for plugging or sealing apertures comprising a heat recoverable dished disc which has the capability to increase its radial dimension upon being heated to a temperature above the transition temperature of the metal. Sealing is accomplished by selecting a heat recoverable dished disc having a radial dimension smaller than that of the aperture to be sealed, but which is capable of increasing its radial dimension to a magnitude greater than that of the aperture. The disc is inserted into the aperture and exposed to a temperature higher than its transition temperature whereupon the disc attempts to return to its original substantially planar configuration thereby increasing in radial dimension and sealing the aperture.

REFERENCES:
patent: 1101084 (1914-06-01), McCarty
patent: 3285470 (1966-11-01), Frei et al.
patent: 3579805 (1971-05-01), Kast
patent: 3740839 (1973-06-01), Otte

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