Apparatus for applying liquid to a surface having safety vent
US4457642A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 8, 1981 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Oct 8, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB44D3/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An apparatus for applying liquid to a surface includes an outer vessel, an inner liquid container which is housed within the outer vessel and which is substantially closed but includes an inlet for pressurized gas and a separate outlet for liquid, and means for supplying pressurized gas to the container. An interface of the container and the outer vessel is sealed around the inlet for pressurized gas whereby in use a region of the space between the outer vessel and the inner container is not pressurized. The unpressurized region of the outer vessel is vented. An applicator is connected via a length of flexible tube to the liquid outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.