Combustible objects, in particular combustible cartridge cases, which are heat-resistant
US4365558A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1979 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Dec 7, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S102/70
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to the field of combustible objects used in weaponry and in particular to the field of combustible cartridge cases. The combustible objects according to the invention are covered with a thin layer of varnish, based on an organic binder, containing hollow microbeads, the said varnish being based on a binder chosen from the group comprising chlorinated rubbers, polyvinylidene chloride, cellulosic binders, glycero-phthalic binders, polyurethane resins and polyepoxy resins. The varnish contains between 5 and 20% by weight, preferably about 10%, of hollow microspheres, relative to the dissolved polymer, and optionally between 2 and 15% by weight of an energy-producing charge having a self-ignition point above 200.degree. C. The combustible objects according to the invention exhibit delayed self-ignition if they are placed in contact with a hot wall, without their thermodynamic properties being adversely affected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.