Shock-resistant electronic circuit assembly
US6311621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Dec 6, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B3/121
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A shock-resistant electronic circuit assembly (10) is provided in which an electronic circuit is encased in an encapsulation (14) that engages a surrounding enclosure (18) in shock-dispersing contact therewith. The encapsulation may have a plurality of edges (16, 16a, 16b), fins (24) or bosses (70) that bear against the enclosure. The encapsulation may include a shock-absorbing material (14f) disposed against the enclosure to protect the circuit against vibrations and a structural support material such as a casing (14e) to protect the circuit against stress. The circuit assembly (10) may be part of a sheathed initiator assembly (55) that includes a transfer member (58) for converting shock wave energy into electrical energy for the electronic circuit, and the released energy may be converted into a detonation initiation signal. Assembly (55) may be part of a detonator (100) that receives a non-electric initiation signal and detonates following the delay determined by the electronic circuit. The detonator housing (112) or an optional sleeve (22) provides an enclosure for the assembly (55). The circuit encapsulation may include one or more bushings such as O-rings (14g, 14g') dispose…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.