Cam and wedge-type self-locking mechanism
US5482417A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49881
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention entails a self-locking mechanism (10) for locking a rotatable member such as a screw, bolt, lock rod, etc. In the case of a lock rod (50) that secures a tool holder (126) within a tool block (122), the self-locking mechanism (10) of the present invention includes at least one cam surface (52) connected between the lock rod (50) and a rotating carrier (14) having at least one wedge surface (26). The rotating carrier (14), wedge surface (26), and cam surface (52) are shaped and disposed such that they can be rotated by a driver (16) in unison as the lock rod (50) is rotated between locked and unlocked positions. However, the rotating carrier (14), wedge surface (26) and cam surface (52) are disposed and shaped such that the cam surface (52) and wedge surface (26) will ,under the influence of the lock rod, move to a wedged self-locking position after the lock rod (50) has assumed a locked position. The driver (16) is designed with respect to the rotating carrier (14), wedge surface (26), and cam surface (52) such that the driver (16) will rotate the cam surface (52) and wedge surface (26) with respect to each other such that they are moved from a wedged locked po…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.