Back to results
US 4,540,309 AGranted
Attachment device
OwnerErik G. Hanssoninventor
Life of this patent
Estimating the term…
Abstract
An attachment device comprises a conical screw and a hook which fits thereto with a curved center portion having a slot extending in the length direction of the hook. A plate can be engaged in said slot so that an aperture in the plate located near the edge thereof partly reaches inside the hook, whereafter the screw can be inserted therein. The screw then engages the edge of the aperture and the concave portion of the hook. The hook itself is inserted through an aperture in a rail and is held against one of its sides, so that the plate is drawn perpendicularly against the opposite side of the rail.
Claims20
A combination comprising:
- a plate having an elongated edge, and means defining an opening adjacent said edge;
- a profiled strip having a curved center portion, slot means formed in said center portion for receipt of said plate edge therein, and two end portions;
- said slot means elongated in a dimension extending toward said end portions;
- rail means for receiving said end portions of said profiled strip, and holding both end portions of said profiled strip in contact therewith;
- conical screw means for insertion through said plate opening for engaging said strip center portion and said means defining said plate opening to effect holding of said plate to said rail in a readily detachable manner, said conical screw means having portions thereof having a diameter substantially less than the minimum cross-sectional dimensions of said opening.
2 more elements
Dependencies are inferred from the claim text.