Bathtub drain apparatus
US4744108A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Feb 12, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03C1/232
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bathtub drain having a fixed body at the tub overflow opening a rotational member extending through the fixed body and having a rear portion behind the fixed body, a non-axially positioned linkage attachment point on the rear portion of the rotational member, and a pair of contact surfaces on the fixed body and rotational member and biased together, with different engagement characteristics marking different rotational positions of the rotational member. In preferred embodiments, the contact surfaces are the rearward surface of the fixed body and the forward surface of the rotational member rear portion, and these surfaces preferably have a groove and mating ridge to mark the fully open and closed positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.