Sinker-slider
US6732470B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Nov 25, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Nov 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K91/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A first horizontal hollow cylinder open at both ends has a first narrow elongated slot. A second horizontal hollow cylinder open at both ends is disposed concentrically within the firtst cylinder and has a second narrow elongated slot that extends between its ends. A vertically elongated element is secured at its upper end to the first cylinder and has an opening intermediate its ends. A flexible elongated connector secured at one end to the lower end of the element with its other end being detachable with the element opening. A rotatable member is secured to one end of the second cylinder and is spaced from the first cylinder so that the member can rotate the second cylinder about its axis without rotating the first cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.