B - Operations – Transporting – 63 – C
Patent
B - Operations, Transporting
63
C
2/0.13
B63C 11/04 (2006.01) A41D 31/00 (2006.01) B32B 5/26 (2006.01)
Patent
CA 1117252
ABSTRACT OF THE DISCLOSURE An insulating material suitable for use in a diverts garment or garment-like apparatus. The insulating material comprises a multiplicity of layers of a flexible, stretchable material. These layers include a central core consisting of a gas permeable, preferably multicom- ponent, layer of a material that is substantially non-compressible when at least partially evacuated and subject to hydrostatic pressure when immersed in water. Two further and gas impermeable layers are provided, each of these further two layers being of a stretchable material with the central core being disposed intermediate to said layers. When formed into a diver's garment, the peripheral edges of the insulating material are sealed, and sealable closure means are provided in at least one of the gas impermeable layers to communicate with the central core. This closure means is conven- iently in the form, for example, of a valve and valve stem arrangement, whereby the central core can selectively be placed under superabmospheric or sub-atmospheric pressure. The gas permeable core preferably comprises a multiplicity of lamina of a knitted fabric stretchable in two directions such as hosiery material of nylon or perlon and may be impregnated by particulate matter.
301157
Kuehn Lorne A.
Pogorski Louis A.
Aspila Kalevi P.
Her Majesty The Queen In Right Of Canada As Represented By The M
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