Apparatus and method for securing end pieces to a mandrel
US11326424B2 · kind B2 · utility
1Cited by
109References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Aug 21, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4994
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.