Back to results
US 5,068,074 AGranted
Method for making synthetic membranes for a gas meter
AssigneeSchlumberger Industries
InventorAndre De Rego
Life of this patent
Estimating the term…
Abstract
In order to make a synthetic membrane for a gas meter of the measuring chamber type, an initial structure (10) of polyester fibers (11), which are preferably woven, is placed between two films (26, 28) of hot meltable elastomer (polyurethane). The hot meltable material is raised to its softening temperature and pressure is applied to cause the films (26, 28) to adhere to the woven structure (10).
Claims10
A method of making a gas meter membrane, comprising the following steps:
- a film of non-vulcanizable thermoplastic elastomer material is disposed opposite to one face of a synthetic fiber structure of substantially constant thickness;
- said elastomer material is raised to its softening temperature;
- simultaneously, pressure is exerted on the assembly constituted by said structure and said film in order to cause said elastomer material to adhere to said structure, and to completely cover said face of the structure by deformation of said film;
- said pressure is then removed and the resulting complex is allowed to cool;
- and
- said complex is shaped in order to obtain a membrane of the desired shape.
3 more elements
Dependencies are inferred from the claim text.