Drain valve and pipe blockage clearing device
US6363566B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Dec 18, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Dec 18, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4351
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A blockage clearing apparatus to clear blockages in both drain valves and in pipes. A cylindrical housing holds a piston connected to a cylindrical rod. The piston moves within the cylindrical housing in response to pressure placed on the piston either manually by an operator or by hydraulic or pneumatic power. As the piston moves in the cylindrical housing, the rod connected to the piston moves back and forth in response to the motion of the piston. The blockage clearing apparatus is mounted to a drain valve or to an opening in a pipe. When operated by pneumatic power, valves, manual or solenoid controlled, will control the flow of air in and out of ports in the cylindrical housing, creating a pressure differential within the housing to actuate the motion of the piston, hence, of the rod. The rod will extend from the housing through an open drain valve and into the pipe that is in fluid communication with the drain valve. The rod will break open any blockages in either the drain valve or in the pipe, which inhibits fluid communication between the interior of the pipe and the drain valve. The blockage clearing apparatus can be placed into a specially created opening in a pipe where…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.