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US 4,440,186 AGranted
Nonskid assembly for preventing the sliding of an item
OwnerJosef Lottnerinventor
Life of this patent
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Abstract
The invention relates to a nonskid assembly comprising a tread carrier secured to a basic body which is connected to the lower end of the stick of a walking aid. A ball joint has a hollow ball cup situated in the axial central opening of a ring and is composed of supplementary sectional ball cup profiles at one end of the central opening and a plug is inserted at the front surface in the other end of the central opening and fixed in it. The ball has a shaft projecting out of the curved end of the central opening of the ring. The shaft is secured in a bore of a connecting piece.
Claims38
A nonskid assembly comprising:
- (a) a ring element having an upper portion and a lower undersurface with central opening passage extending from the undersurface completely through the ring element,
- (b) coupling means partially disposed within said central opening passage and projecting outwardly from said central opening,
- (c) retainer means disposed within the central opening passage through said lower undersurface,
- (d) said retainer means being effective to support said coupling means against downward displacement within the central opening passage,
- (e) tread carrier means having treads on a bottom surface thereon being connected to the ring element over the lower undersurface of said ring element, and
- (f) the retainer means has a plane underside against which the tread carrier means is disposed.
3 more elements
Dependencies are inferred from the claim text.