公开(公告)号：US3595124A

公开(公告)日：1971-07-27

申请号：US3595124D

申请日：1969-05-19

Applicant: KEYSTONE CONSOLIDATED IND INC

Inventor： LINDSTRAND ROBERT O ,  LOOMIS GEHLE D ,  KOZLIK RUDOLPH C

IPC: F16B31/02 ,  F16B33/04

CPC classification number: F16B31/021

Abstract: A controlled torque bolt having a threaded shank and a driving head integral with and adapted to shear off of the bolt upon the application of a predetermined torque by a driver upon the driving head. The bolt also includes an enlarged flange or head forming the head of the bolt when secured in the work, the driving head and the enlarged head being integral with the bolt and defined by a fold or undercut therebetween which also defines the plane of shear for the driving head. An alternate embodiment of the bolt positions a washer in the fold or undercut.

公开(公告)号：US3530760A

公开(公告)日：1970-09-29

申请号：US3530760D

申请日：1968-11-08

Applicant: KEYSTONE CONSOLIDATED IND INC

Inventor： LINDSTRAND ROBERT O

IPC: F16B25/00 ,  F16B33/02 ,  F16B39/30

CPC classification number: F16B25/0047 ,  F16B25/0078 ,  F16B33/02 ,  Y10S411/938