Small ball sliding in both directions along two thread lengths

Details Small ball sliding in both directions along two thread lengths Small ball sliding in both directions along two thread lengths

1976-05-14

1978-01-10

Grieb, William H.

Undertaking

273 95AA, A63B 2114, A63B 6710

Patent

active

040675696

ABSTRACT:
A ball likely to slide along two thread lengths, characterized by an egg-shaped configuration and provided with an axial through-hole, wherein into the said through-hole there are fitted two thread sections of a suitable length, which are fastened at the ends to anchoring members, consisting of a thin strip of flexible material, carrying at one end a loop, the other end of the same thin strip having an arrow shape and being provided with a central hole to which there are connected the thread sections themselves by means of a knot.

REFERENCES:
patent: 1311534 (1919-07-01), Seymour
patent: 1864318 (1932-06-01), Powell
patent: 2773328 (1956-12-01), Fraenkel et al.
patent: 3103213 (1963-09-01), Robinson
patent: 3743280 (1973-07-01), Martinez
patent: 3893256 (1975-07-01), Wolf et al.

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