Showerhead
US4588130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1984 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Jan 17, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A showerhead has a series of orifices together with a series of spray outlets and a turbine with a valve for sequentially opening successive ones of the orifices. The turbine is driven by water emitted from a nozzle. A multiply-apertured flow director plate communicates water to the nozzle, the orifices and the outlets. Overlying the director plate is a control plate that selectively couples water to different ones of the apertures in the director plate as the latter is moved by a control ring. First, second and third passages are defined in the showerhead, the first between an aperture in the director plate to the nozzle and also through the valve to the orifices, the second from an aperture in the director plate to the outlets and the third from an aperture in the director plate in bypass of the nozzle but through the valve to the orifices in a manner to retard the speed of the turbine. A first set of shutters on the control plate serves to close the third passage, open the first passage and variably open the second passage during opening of the first passage as the control plate is moved. A second set of shutters also defined on the control plate close the first and second passa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.