Floatable drain plug
US4930657A · kind A · utility
Inventor
Key dates
| Filing date | Dec 8, 1988 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Dec 8, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D39/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drain plug, which has a hollow cylindrical body, an expander assembly within the body and a manually manipulatable handle, is fabricated of a material such that the drain plug floats. The handle is connected to the expander assembly and when the handle is moved in a cam or rotational movement, the expander assembly is moved axially within the body. This axial movement expands the body of the drain plug such that the drain plug closes the drain opening and contracts the body of the drain plug for ease of removal from the drain opening. The expander assembly seals the end of the body and is secured within the body so it does not move when the handle is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.