LN BURKOV-DESIGN BOLT Russian patent published in 2008 - IPC F16B35/06 

FIELD: mechanics.

SUBSTANCE: invention relates to fasteners. The proposed bolt is a two-end piece, one end representing a slotted rod and a pin whereon a thrust-head is pivoted and the other end being furnished with a thread. The aforesaid thrust-head is made up of two pivoted on one pin parts, one being a U-shape and the other one a flat with rounded edges both arranged to pivot so as to allow the flat part enter the U-shape part and spring-loaded by a one-coil torsion so as to, when unloaded, get into a rectilinear position perpendicular to the bolt lengthwise axis. Both ends of the said spring are furnished with the tabs bent both in parallel and opposed, the spring being fitted flush with the thrust-head flat part so that the tabs contact the end faces of the thrust-head both parts. At the point of the contact between the aforesaid tabs and end faces, there are slots, deeper and wider than the said spring wire diameter. The length of one tab equal the thickness of the thrust-head U-shape part wall while the other tab length equals the thickness of the thrust-head flat part. The bolt end accommodating the pin shared by the thrust-head both parts and the spring features a continuous end face wall its thickness making, at least, the pin radius.

EFFECT: high-reliability fastening and thrust-head smaller sizes.

4 dwg