Mortar cavity lining

Details Mortar cavity lining Mortar cavity lining

1974-07-26

1976-06-15

Pendegrass, Verlin R.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Means assembling part within hole or aperture

156285, B69D 300

Patent

active

039635562

ABSTRACT:
In a separable mortar round of the type having a central cartridge chamber ithin the boom portion and provided with a plurality of flash holes extending outwardly of the chamber that improvement, which includes an adhesively bonded thin stainless steel foil disposed about the inner wall of the chamber and closing over the flash holes to provide increased liquid impermeability. The method of applying the aforesaid foil to the chamber wall by wrapping a foil on a hollow mandrel having a plurality of surface openings and applying a vacuum to said mandrel while simultaneously wrapping the foil thereabout. Coating both the foil and the inner chamber wall with an adhesive and inserting said mandrel into the separated boom for aligned disposition in the chamber. Thereafter gaseously sealing the mandrel in the chamber, releasing the vacuum, applying positive pressure to the mandrel and removing the same from the chamber.
The invention described herein may be manufactured, used and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.

REFERENCES:
patent: 2838435 (1958-06-01), Hewett
patent: 3513051 (1970-05-01), Lichfield
patent: 3728196 (1973-04-01), Rausing

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