Rotation angle indicating retainer assembly for tightening threaded fasteners
US10611004B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2016 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | May 10, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B31/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rotation angle indicating retainer assembly for use with and/or integrated with a hydraulically driven device for tightening and loosening a threaded fastener is disclosed and includes: a retainer cap assembly having a hollow cylindrical shape with an upper hollow portion, a lower hollow portion, a hollow disc, a ring having polygonal connection formations and a ball bearing assembly; a plunger assembly having a cylindrical shape with a connection portion, a depression portion, a compression spring and a lower retaining ring; a rotation angle scale assembly having a hollow cylindrical shape with an upper hollow disc with an arrow indicator and a lower portion having polygonal formations; a rotation angle indicator assembly having a substantially hollow cylindrical shape with an upper rotation angle dial, a lower portion having a rotation angle scale, an upper retaining ring, a wave spring and friction ring; and wherein the rotation angle scale assembly is nonrotatably attachable to a driving portion of a housing of the device, and wherein the retainer cap assembly is nonrotatably attachable to a square drive shaft torque output assembly of the device. Advantageously the rotation …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.