Locking nut
US5609456A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1995 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A locking nut includes a main ring having a threaded bore, a front end face at one end of the bore and a counterbore at the other end of the bore. Actually, the threaded bore opens into the counterbore through a recess which in turn opens out of a shoulder that forms the end of the counterbore. The main ring also has threaded holes which open out of the recess around the threaded center bore. In addition to the main ring, the nut has a secondary ring which fits into the counterbore and against the shoulder of the main ring. In the region of the threaded holes the secondary ring is relieved to the extent that it has a lesser diameter than the recess. The secondary ring also has a threaded bore, the thread of which matches the thread of the bore for the main ring. Indeed, the threads for the two rings are cut in the same machining operation, so that no interruption in pitch exists between the threads of the two rings. Cap screws extend through the secondary ring at the recesses and into the threaded holes of the main ring, engaging the threads in those holes. When the cap screws are loose, the nut passes easily over the external thread of a threaded shaft or spindle. However, when th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.