Pneumatic circuit for strapping tool having adjustable tension control
US5853524A · kind A · utility
42Cited by
16References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Jun 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86413
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A strapping tool has a timing control circuit incorporated therein which comprises a first pressure-operable valve for time-controlling a plastic strap welding operation, and a second pressure-operable valve for restricting fluid line flow from a source of fluid to an air drive motor of the tool during the tensioning phase of the strapping operation while permitting unrestricted fluid line flow from the source of fluid to the air drive motor of the tool during the welding stage of the strapping operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.