Drain valve ball lever
US4192026A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7016
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pop-up drain valve assembly for a sink includes a drain plug and control means for raising and lowering the plug to open and close the drain. The control means includes a manually operable plunger rod and a unitary, one piece, plastic ball lever that pivots to translate the downward force applied to the plunger rod into an upward force for lifting the drain plug to open the drain. The inner end of the ball lever is positioned beneath the drain plug and the outer end extends through and is retained in an opening in the plunger rod. The ball lever also includes an integral stop which prevents the rod from riding up and binding on the lever and retaining means which prevents the outer end of the lever from sliding out of the opening in the rod. In a preferred form, the retaining means is a pair of spaced apart, resilient fingers which can be forced together to permit the outer end of the lever to enter the opening of the rod and which upon release will resume their normal shape to prevent the outer end of the lever from being removed from the opening in the rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.