Spill proof bong
US4241741A · kind A · utility
Inventors
Key dates
| Filing date | Jun 11, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Jun 11, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24F1/30
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A traditional bong is provided having an upright barrel divided by a partition into a lower, dry chamber into which the pipe stem enters, and an upper aqueous chamber which is made spill-proof by virtue of a stand pipe extending up from the lower chamber through the baffle, this stand pipe being covered by an elongated cap which bobbles up and down in the liquid-filled upper chamber as the device is used and seals against an opening and an overlying baffle when the bong is inverted to prevent spillage. An additional novel effect is produced by the bobbling of the diverter cap which covers the stand pipe, which tends to mix the inhaled smoke with the water as it bobbles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.