Torque wrench system having multiple torque stations
US11085252B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/165
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved multi-bolt and nut torque wrench for installing and removing bolts or nuts from flanged joints or the like which includes a plurality of torque stations having a plurality of high torque wrenches for engaging the heads of the bolts or nuts during a high torque phase of removal or installation; a plurality of low-torque motors operatively engaged with the wrenches for rotating the bolts or nuts during the low torque phase of removal or installation; a source of hydraulic fluid for driving the low-torque motors during the low-torque phase, and driving the high-torque wrenches during the high torque phase; and a mechanism for switching between the two phases depending on the torque needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.