System and method for preloading tension in a stud using an anti-seizure spacer for tapered thread connections
US9889529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2016 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jul 7, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B31/043
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A system for preloading tension in a stud using an anti-seizure spacer for tapered thread connections is provided. The system comprises a hydraulic tensioning device including a nut configured for threadably engaging the stud, a foot, a cylinder having a first bore defined therein and a surface for engaging the foot, and a piston movably positioned within the first bore, wherein a hydraulic cavity is defined therebetween. The device further includes a puller screw including male tapered threads configured for being threadably coupled with female tapered threads on the stud. The puller screw includes a head configured for engaging a surface of the piston. The system also includes a spacer positioned between the male tapered threads of the puller screw and the female tapered threads of the stud. A method for preloading tension in a stud using the spacer is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.