Ram drive chuck
US4438554A · kind A · utility
Inventors
Key dates
| Filing date | May 18, 1981 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | May 18, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
New and improved ram drive chuck is provided and comprises workpiece driving means which are moveable between an extended position thereof relative to an appropriately positioned workpiece wherein the workpiece driving means are operable to drivingly engage, support and rotate the workpiece, and a retracted workpiece driving means position relative to the appropriately positioned workpiece wherein the workpiece driving means are disengaged from the workpiece. Means to positively disengage the workpiece driving means from the workpiece upon movement of the former into the retracted position thereof are operable attendant the drive of a specified form of workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.