Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Patent
1986-05-23
1987-12-22
Recla, Henry J.
Pipes and tubular conduits
With pressure compensators
Variable capacity chambers
220414, F16L 5504, B65D 808
Patent
active
047140941
ABSTRACT:
A gas-oil pressure accumulator having a load-bearing structure of composite material, suitable for aircraft hydraulic circuits. The accumulator is formed of a cylindrical body with closed ends, at least one of which is composed of a convex cap. A piston slideable in the cylindrical body defines two chambers, one adapted for containing hydraulic oil and the other adapted for containing gas under pressure. The walls subjected to internal pressure are formed with an internal core of metallic material of small thickness, and are provided with a facing of composite material, composed of high-strength fibres impregnated with synthetic resin, adapted for resisting the loads due to the pressure, which facing of composite material extends at least over one of the end caps of the cylindrical body, the winding of the fibers being continuous and without the superposition of consecutive turns in any one layer of turns, with winding angles differing from the angles corresponding to the equilibrium path of the stresses on the surface of the cylindrical body itself.
REFERENCES:
patent: 3171563 (1965-03-01), Bernd
patent: 4561568 (1985-12-01), Hoffmeister et al.
Dubno Herbert
Magnaghi Oleodinamica S.p.A.
Recla Henry J.
Ross Karl F.
Thronson Mark J.
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