Inverted split-spool release devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Apr 24, 2003
app pub date -
Oct 22, 2001
filing date -
Oct 22, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Split spool release apparatus for retaining and deploying a deployable appendage. Exemplary apparatus comprises a housing which houses a split spool clamping device, a release nut attached to the deployable appendage, a locking mechanism or fuse assembly, and an actuator. The split spool clamping device comprises a plurality of separable sections that secure the release nut and deployable appendage using the restraining wire that is wrapped around them. In one embodiment, the split spool clamping device may comprises a threaded split-nut. The restraining wire is preferably wrapped using variable pretension, having low tension at the fuse end and higher tension at the nut end (load application end). The fuse assembly is coupled to the restraining wire at a location that is distal from the deployable appendage, and is activated by the actuator to release the restraining wire. This allows the separable sections of the split spool clamping device to separate and allow the release nut and deployable appendage to retract from the apparatus.
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