Threaded connection using variable lead threads
US4346920A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49863
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded connection is subject in use after assembly to a load of specified magnitude in a selected direction along the thread axis. As so loaded, the basically constant pitch threads are uniformly stressed. The load faces of the threads on at least one of the members are defined, in the unstressed condition, to have a lead which varies from a constant lead by an amount which, at any given location along the threads, is equal to the amount of net relative deflection of the threaded members along the axis at such location in response to the application to the members of the load of specified magnitude. The design considerations pertinent to such a connection are set forth in the context of the presently preferred embodiment of the connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.