DEVICE FOR RECEIVING IMPACTS, COMPRISING INNER PIEZOELECTRIC ENERGY RECOVERY MEANS
First Claim
1. A device comprising a deformable shell defining an inner space under a gas pressure higher than the atmospheric pressure, comprising:
- a flexible piezoelectric membrane applied against an inner wall of the deformable shell under the effect of the pressure present in the inner space, said membrane being capable of generating electric energy under the effect of a deformation of the shell;
an electric circuit electrically connected to the piezoelectric membrane, comprising an element for storing the electric energy that said piezoelectric membrane generates and a rigid structure; and
longilineal resilient elements for holding the electric circuit according to a predetermined position of the inner space, each holding element being arranged between the rigid structure of the electric circuit and the inner wall of the deformable shell and being secured to the piezoelectric membrane and to the rigid structure.
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Accused Products
Abstract
A device includes a deformable shell that defines an inner space under a gas pressure higher than the atmospheric pressure. A flexible piezoelectric membrane is applied against an inner wall of the deformable shell under the effect of the pressure present in the inner space. The membrane is capable of generating electric energy under the effect of a deformation of the shell. An electric circuit is electrically connected to the piezoelectric membrane and includes an element for storing the electric energy that it generates and a rigid structure. Longilineal resilient elements for holding the electric circuit according to a predetermined position of the inner space are each arranged between the rigid structure of the electric circuit and the inner wall of the deformable shell and secured to the piezoelectric membrane and to the rigid structure.
29 Citations
24 Claims
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1. A device comprising a deformable shell defining an inner space under a gas pressure higher than the atmospheric pressure, comprising:
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a flexible piezoelectric membrane applied against an inner wall of the deformable shell under the effect of the pressure present in the inner space, said membrane being capable of generating electric energy under the effect of a deformation of the shell; an electric circuit electrically connected to the piezoelectric membrane, comprising an element for storing the electric energy that said piezoelectric membrane generates and a rigid structure; and longilineal resilient elements for holding the electric circuit according to a predetermined position of the inner space, each holding element being arranged between the rigid structure of the electric circuit and the inner wall of the deformable shell and being secured to the piezoelectric membrane and to the rigid structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device intended to be integrated in an inner space of a deformable shell taken to a pressure higher than the atmospheric pressure, comprising:
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a flexible piezoelectric membrane capable of generating electric energy under the effect of mechanical stress; an electric circuit electrically connected to the piezoelectric membrane, comprising an element for storing the electric energy that it generates and a rigid structure; longilineal resilient elements secured to the rigid structure of the electric circuit and secured to the piezoelectric membrane. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. (canceled)
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24. A method of manufacturing a device comprising a spherical deformable shell defining an inner space under a gas pressure higher than the atmospheric pressure, comprising:
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forming a first and a second deformable half-shells; forming an assembly comprising the piezoelectric membrane, the electric circuit, and the holding elements, the length of the holding elements being selected so that the latter are compressed when the assembly is housed in the deformable shell; inserting the assembly into the first half-shell; placing the second half-shell on the first half-shell to form the deformable shell; and pressurizing the inner space of the shell to apply the piezoelectric membrane against the inner wall of the deformable shell.
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Specification