| 摘要 |
1333654 Anchor bolts ITT INDUSTRIES Inc 11 Jan 1971 [20 July 1970] 1226/71 Heading F2H An anchor bolt 10 adapted to be anchored in a predrilled hole comprises a threaded body portion 12, a plain cylindrical portion, a reduced diameter cylindrical portion 16 defining a shoulder 18, and a fruato-conical end portion 14, a split collar 20 on the portion 16 riding over the portion 14 and expanding when the bolt is anchored by turning a nut on the thread, rings 24, 28 of axial knurling, respectively on the portion 16 and at the widest diameter part of the end portion 14, preventing rotation. of the collar, relative to the body, and axial movement being facilitated by annular grooves 22 on the collar. |
