Apparatus for marking a spot in differing depths of water
US5947780A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1998 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | May 15, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B22/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marker for use by boaters to mark spots in a body of water includes a water-tight, hollow cylindrical main body that floats and which serves as a buoy member. The main body is capped at its opposite ends by end caps that are apertured. An elongate hollow tube is positioned within the hollow interior of the cylindrical main body so that it extends between the apertures. A spool member having a preselected length of line coiled thereabout is rotatably mounted atop the upper end cap and line extends from the spool through the interior of the hollow tube to the bottom of the body of water when the marker is in use, there being a weight at the free end of the line. Beads of progressively larger size relative to the free end of the line are secured to the line, each bead being positioned at a preselected length of the line that represents a particular water depth. A slide plate is slidably mounted to the bottom end cap in alignment with the hollow interior of the tube and bores of differing sizes are formed in the slide plate, each size corresponding to a bead and being slightly smaller than its corresponding bead to prevent its passage through the slide plate. The user aligns a presel…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.