Grip belt drive system
US7685795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2005 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B51/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention describes an improved grip belt drive system for use in sealing machines used to wrap articles in thermoplastic film. Briefly, a timing belt is used in place of the traditional flat or V belt. The presence of teeth on the pulleys, coupled with the use of a timing belt eliminates the possibility of slippage between the belt and the pulleys. To protect the system in the case of a film jam or misplaced article, a torque-limiting mechanism is included, which disengages the drive system if there is excessive counterforce. Furthermore, the outer surface of timing belt contains a pattern, which when mated with a second belt having the same or a complementary pattern, meshes in such a way so that the two belts are positively locked in both the longitudinal and transverse directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.