Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1974-10-04
1976-07-06
Drummond, Douglas J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156222, 156287, 244 1711, 264241, 416226, 416229R, B29C 1700, B29C 2700, B64C 2704
Patent
active
039679969
ABSTRACT:
A method of manufacturing hollow pieces comprising the steps of forming a blank of single sheets each having a layer of gluing substance applied thereto; placing the blank onto an appropriate mandrel and subjecting it to a preliminary compression so as to impart to the blank a stiffness and to shape it into an unclosed profile as required for subsequent steps. Then the blank ends are brought together so as to define a cavity accommodating an elastic bag. The resulting blank is placed into a mould, and pressure is fed into the elastic bag to perform a final pressing.
The above-described method is preferably used to manufacture helicopter rotor blades of glass plastic, which have variable cross-sectional shape over their length and exhibit higher strength and longer service life as compared with metal blades.
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Golstman Vladimir Borisovich
Guskov Konstantin Nikolaevich
Kamov Nikolai Ilich
Kovalev Anatoly Fedorovich
Kovyryalkin Igor Ivanovich
Drummond Douglas J.
Kittle John E.
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