Ballcock float structure
US4703653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1985 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | Dec 2, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7423
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Improved ballcock float structures are provided including a molded, plastic, hollow body formed of cup-like lower and reverse cup-like upper parts. The parts are retained together by snap engagement between the extremities of the parts with positioning abutments for additional stability. A float guide extends vertically through the body having a vertical opening for receiving a ballcock or the like to be controlled by the float. Control of the float for controlling the ballcock is provided by two, tubular liquid vents secured in and extending upwardly from the lower part bottom wall and a similar liquid vent projecting downwardly through and from the upper part top wall. The liquid and air vents project into the interior of the body, but terminate spaced apart and the relative positions thereof determines the performance of the float. Furthermore, it is preferred that the liquid vents will be of a length about equivalent to a collar formed by the lower part around the float guide so that a liquid-tight chamber is formed at all times retaining a certain amount of liquid, and therefore establishing a ballast. The air vent is preferably of a length extending downwardly into the lower …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.