Plug for sink drainage
US7032254B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Aug 22, 2005 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Aug 22, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03C1/23
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention discloses an optimized plug for a sink drainage to solve the inferior plug shaft and plug knob structure. The plug shaft and plug knob has two engaging structures, namely, rotating engagement and vertically sliding structure; the plug includes a plug body, a plug shaft, a plug knob, and a plug cap, wherein the plug shaft has side slot defined a top end, the plug knob has a trans-slot, a longitudinal annual channel, and knob shoulder and a biasing bridge slidable inserted into the side slot; by rotating the plug cap from 10° to 170° angular degree, the biasing bridge is supported by the top edge of the plug shaft for ensuring the plug in a water-flowing position, while from 171° to 11° degree, the plug knob is slide into the plug shaft for sealing the water; by inserting an elastic member into the trans-slot, the elastic member is adapted to extend out for biasing the plug shaft edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.