Safety locking device for airborne shockmounts

Claim 1

In an apparatus for securing electronic equipment to a shockmount, including at least one support block on the electronic equipment housing for engaging a spring loaded pin secured to a support plate which is secured to the shock mount and at least one hook on the opposite side of the electronic equipment housing adapted to engage a safety locking device; a safety locking device, comprising: a hold down screw pivotably secured to the shockmount support plate; a cone washer adapted to engage said hook; said cone washer being slidably secured in non rotating relation on said hold down screw; said cone washer having a plurality of pins projecting from the periphery thereof; a two part nut with one part threadably engaging said hold down screw and a second part with a plurality of slots adapted to receive and engage the pins on said cone washer; said slots each having a first portion, extending axially of the second part of the two part nut, adapted to receive the pins on said cone washer and a second portion, extending circumferentially at an angle to the first portion and in the direction toward said hook, adapted to retain the pins on said cone washer; means for retaining said one part of the two part nut within the second part of the two part nut; said second part of the two part nut being axially movable with respect to the first part; means, located within the second part of the two part nut, for urging said one part axially away from the second part in the direction of the cone washer; whereby the pins on the cone washer are maintained in engagement in the second portion of the slots on the second part of the two part nut after they are engaged and means for permitting limited axial movement and relative rotation between the one part of the two part nut and the second part of the two part nut whereby the second part of the nut may be pushed axially over the cone washer to receive the pins in the first portion of said slots and being rotatable to engage the pins in the second portion of said slots.