Inflatable mold for use in space
US5664373A · kind A · utility
Inventor
Key dates
| Filing date | Aug 22, 1994 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Aug 22, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2791/001
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Modular Structures preferably usable to form human habitations in outer space are fabricated by molding. A mold comprising progressively surrounding flexible walls defines progressively surrounding cavities. A selected cavity or cavities are inflated or pressurized, as with gas, to distend to assume a predetermined configuration. Another selected cavity or cavities are injected with mold material, which is then allowed to harden. A pressurized cavity or cavities may be evacuated and then filled with mold material. In this manner, a strong structure is progressively formed is subsequent injection and hardening steps. In alternative embodiments of the molding method, supports or reinforcing members are placed within cavities prior to inflation and material injection. These supports space apart adjacent flexible mold walls and force the flexible walls to assume a desired configuration under inflated conditions. The supports can be rigid and solid; rigid, telescoping, and biased to expand; and flexible and resilient. The supports can thus resist tensile and compressive forces imposed on the flexible walls by inflation. In further alternative embodiments, magnets are placed within the m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.