Reusable viscous material dispensing apparatus
US5435468A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D7/0238
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A reusable viscous material dispensing system. The system has a sealed pressure cylinder with a rounded upper region with an inert gas inlet, and a rounded bottom region with a viscous material ingress and egress opening. A pressurizing boat is contained in the cylinder. The pressurizing boat has a lower, hull portion which is weighted with ballast, and an upper portion. The lower, hull portion and upper portion join along a circular interface region. The diameter of the circular interface region is smaller than the inner diameter of the cylinder. The boat floats in the cylinder filled with viscous materials, such as thick lubricating greases. The viscous material forms a gaseous pressure seal between the interface region of the boat and inside of the pressure cylinder. Fins extend radially outwardly from the interface region of the pressurizing boat. These fins prevent the interface region from scraping viscous materials off the sidewalls of the pressure cylinder. In use of the system, the cylinder is filled with a viscous material through its ingress and egress opening. This raises the pressurizing boat and forms the gaseous pressure seal. By applying inert gas pressure to the pr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.