Operation detecting device of clamp
US6736384B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2003 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jan 17, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B5/064
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A clamp rod (5) is vertically movably inserted into a housing (3). The housing (3) has a lower end wall (3b) formed with a detecting hole (58) substantially concentrically with an axis of the clamp rod (5). The detecting hole (58) has a peripheral surface opened to provide at least one inlet hole (71, 72) for supplying compressed air. A detecting member (62) is vertically movably fitted into the detecting hole (58). The detecting member (62) has an outer peripheral surface provided with a closing surface (68) which closes an opening portion (71a, 72a) of the inlet hole (71, 72) and with a recess (69) which communicates the opening portion (71a, 72a) with the outside air. The clamp rod (5) has a downwardly oriented projection (5a). The projection (5a) is connected to the detecting member (62) so that it can make a relative movement radially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.