Swing clamp apparatus
US5820118A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jan 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B5/062
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hydraulically-operated swing clamp (10) for holding and clamping a workpiece (14) to a fixture (12) is disclosed. The swing clamp (10) includes an improved cam assembly (24) that swings its clamping head (22) away from the workpiece (14) when the piston (22) of the clamp (10) is shifted to its extended, unclamped position. The cam assembly (24) includes at least one cam track or groove (38,40,42) and a corresponding cam follower ball (44) received within the groove (38,40,42). The cam track (38,40,42) includes a central arcuate region (48) and a pair of substantially planar side faces (50,52) extending tangentially from the central arcuate region (48). The central arcuate region (48) has a radius of curvature substantially equal to the radius of curvature of the cam follower ball (44). The planar side faces (50,52) extend tangentially away from the central arcuate region (48) and the cam follower ball (44).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.