Rotary clamp
US6663093B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B5/062
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A clamp rod (5) is inserted into a housing (3) rotatably around an axis and movably downwards for clamping. The clamp rod (5) has an outer peripheral portion formed with three guide grooves (26) which are arranged peripherally at substantially the same spacing. An engaging ball (29) which is fitted into every guide groove (26) is supported by a lower end wall (3b) of the housing (3). Each of the guide grooves (26) comprises a rotary groove (27) and a straight groove (28) which is in upward continuity with the rotary groove (27). The rotary grooves (27) as well as the straight grooves (28) are arranged in parallel with one another. A partition wall between the adjacent guide grooves (26), (26) has a minimum thickness (T) set to a value smaller than a diameter (D) of the engaging ball (29).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.