Clamping apparatus
US6024354A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/204
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A housing (11) includes an annular driving member (16), into which a cylindrical pull rod (12) is inserted. An actuation member (26) is inserted into the pull rod (12). At the time of clamping, the pull rod (12) has an upper end portion fitted into a stepped hole (2) of a workpiece (1) and the driving member (16) is lowered. Then, first the pull rod (12) descends relatively to the actuation member (26) to project a plurality of engaging balls (13) outwards and subsequently these balls (13) are brought into butting contact with a lower step portion (8) of the stepped hole (2). Thus the driving member (16) pulls the workpiece (1) downward through the pull rod (12) and the balls (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.