Method and apparatus for making dual compartment containers
US4127976A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1977 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | Aug 24, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B2230/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for producing dual compartmented tubular containers which includes a system for pumping a high viscosity fluid at a constant flow rate and includes an air driven pump for pumping the fluid from a storage location to an output point. The pump is of the type which produces a substantially constant output per pump cycle. The pump is driven by an air supply communicating with the pump. A timer is attached to the output pump shaft and measures the cycle speed of the pump. The air pressure driving the pump is varied in response to the cycle speed of the pump to maintain the speed of the pump constant. Whenever the material being driven by the pump increases in viscosity, a slow down in the pump speed is prevented by increasing the air pressure used to drive the pump. Where the viscosity decreases and the pump speed begins to increase, the air pressure used to drive the pump is decreased to maintain a constant pump speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.