Patent ID: 6073914
Filing Date: 2000-06-13
Classification: B64G,Y10T

Abstract:
Release apparatus for a holddown device having a retaining bolt which is pretensioned in a direction of its lengthwise axis, said apparatus releasing the retaining bolt from its pretensioned position, said apparatus comprising:a release device having a housing with a cutout therein, and an internal thread into which a threaded end of said retaining bolt is screwed, whereby pretensioning force in said retaining bolt is conducted through said threaded end of said retaining bolt;an opener mounted pivotably in said cutout of said housing; anda wire coil wound around the housing and the opener and holding said opener in position in said cutout;wherein said internal thread is located half in a housing of the release device and half in an opener;said wire coil is releasable for causing the opener to pivot away and release the retaining bolt; andends of said wire coil are held by fuse wires, said wires melting when electrical voltage is applied, causing the wire coil to spread and release the opener.