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US 4,097,015 AGranted
Ceiling hook
OwnerDaniel Frishmaninventor
Life of this patent
Estimating the term…
Abstract
A rotatable ceiling hook for plants and the like. The hook is shaped in the form of a helix which is secured to a support at a point midway between its ends by a suitable means such as a screw to provide a strong and balanced ceiling hook. Interposed between the screw and the helix is a base and a washer separated by a rigid cylindrical spacer. The helix rotates around the spacer, thus providing easy rotation even when the screw is firmly attached to a support and the hook is heavily loaded.
Claims2
A ceiling hook comprising
- a helical segment spiralling through more than 360.degree., said segment tapering from a maximum width at its center, uniformly to a minimum width at each end, and having a substantially uniform thickness along its length;
- and a means for pivotally securing said helical segment remote from its ends to a support with the axis of the segment substantially horizontal so that the ends of the helical segment are disposed to retain an object hung from them, said means for pivotally securing located at said center so that the ends of said segment form two hooks extending symmetrically on either side of said means for pivotally securing and said segment having a uniform thickness along its length;
- said helical segment formed with a cylindrical hole passing through it substantially perpendicular to its helical axis at a point located midway between its ends, and wherein said means for securing comprises:
- a hollow, cylindrical spacer, adapted to fit loosely within said hole, and having a base formed on one end perpendicular to its cylindrical axis,
- an axle means comprising:
- a shaft fitting loosely within and extending along the axis of said cylindrical spacer;
- a head end adapted to rotatably support said helical segment and said cylindrical spacer, and a securing end adapted to attach to said support,
- a washer having an outer diameter larger than the circumference of said hole, and fitting around said shaft and seating between said head of said axle means and the end of said cylindrical spacer opposite said base,
- said cylindrical spacer having a length longer than the thickness of said helical segment so that when the securing ends of the axle means is attached to the support with said base pressed firmly against the support, the helical segment rotates freely on the cylindrical spacer.
6 more elements
Dependencies are inferred from the claim text.