Back to results
US 9,802,441 B2Granted
Magnetic chalk line
OwnerDustin Douglasinventor
Life of this patent
Estimating the term…
Abstract
A magnetic chalk line provides a powerfully magnetized fastener, which may be secured magnetically to any flat metal surface, such that it will remain secured when the line is drawn out of its spool and snapped. A hook end is provided which may be hooked to the edge of a surface, such as a steel plate, girder, wooden stud, or drywall sheet. A teardrop-shaped aperture is provided in the fastener, enabling the user to easily secure it to a nail head when working with wood or other non-metallic materials.
Claims16
A magnetic chalk line, comprising:
- (a) a spool;
- (b) a chalk line;
- (c) said spool comprising a crank handle;
- said crank handle being configured such that it retracts said chalk line when rotated;
- (d) a fastener having a centerline;
- (e) a hole;
- (f) said hole being centered on said centerline;
- (g) said fastener being affixed to an end of said chalk line by attaching said chalk line to said hole;
- (h) said fastener having one or more magnets attached thereto, such that it may be removably attached to any metallic surface;
- (i) said fastener having a hook end;
- (j) said hook end being configured to removably attach to the edge of a surface;
- (k) said fastener having an aperture;
- and
- (l) said aperture being centered on said centerline.
11 more elements
Dependencies are inferred from the claim text.