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US 4,264,018 AGranted
Collapsing bladder positive expulsion device
AssigneeUnited Technologies Corporation
InventorThomas C. Warren
Life of this patent
Estimating the term…
Abstract
Collapsing bladder positive expulsion devices are provided in which the bladder itself is configured to have areas of longitudinal stiffening such that upon the application of external pressure the bladder can be caused to collapse inwardly upon itself in a predetermined fashion without the requirement for a separate internal support structure.
Claims12
A bladder structure, adapted to collapse under the application of a predetermined external pressure in a predictable fashion to permit expulsion of the contents of said bladder, said bladder comprising:
- a. Metallic bladder defining means having a predetermined resistance to inward collapse, said means being configured to have a cylindrical body portion and ellipsoidal end portions;
- and
- b. A plurality of uniformly spaced stiffening means formed integrally of said bladder defining means, said stiffening means having a higher resistance to internal collapse than the remaining portions of said bladder defining means, said stiffening means comprising externally concave deformations in the surface of said metallic bladder said deformations extending along said cylindrical body portions and into said ellipsoidal end portions.
A positive expulsion device comprising:
- a. A pressure vessel;
- b. A metallic bladder structure received within said pressure vessel, said bladder structure being configured to have a cylindrical body portion and ellipsoidal end portions adapted to collapse under the application of a predetermined external pressure in a predictable fashion to permit expulsion of the contents of said bladder, said bladder structure comprising:
- i. Metallic bladder defining means having a predetermined resistance to inward collapse;
- ii. A plurality of uniformly spaced stiffening means formed integrally of said bladder defining means, said stiffening means having a higher resistance to internal collapse than the remaining portions of said bladder defining means, said stiffening means comprising externally concave deformations in the surface of said metallic bladder defining means said deformations extending along said cylindrical body portions and into said ellipsoidal end portions;
- c. Means for introducing a pressurizing medium between the interior of said pressure vessel and the exterior of said bladder;
- and
- d. Fluid communicating means extending from said bladder through said pressure vessel through which the contents of said bladder may be expelled upon collapse of said bladder.
4 more elements
Dependencies are inferred from the claim text.