1976-10-08
1978-11-07
Pinkham, Richard C.
Undertaking
239261, 239280, 272 1B, A63B 522
Patent
active
041242068
ABSTRACT:
Improvement in a water powered jump rope device having a pair of standards and a hollow water-conducting jump rope rotatably supported by and between the standards, the improvement comprising each standard being free standing and consisting of a hollow base and a water-conducting upright pipe supported on the base, the base having a threaded fill opening for receiving a ballast, the lower end of the upright pipe threadably engaged in the fill opening, the standard having a liquid inlet therefor, a water-conducting swivel joint carried on a side of the upright pipe near the upper end thereof, the swivel joint comprising a threaded boss formed in a side of the upright pipe, a threaded hollow gland threadably engaged in th boss, a second water-conducting pipe, the second pipe rotatably carried in the interior of the gland, a flange in the inner end of the second pipe, a radial surface on the inner end of the gland which serves as a bearing surface for the flange during rotation of the second pipe, the radial surface and the flange forming a water-tight rotating seal for the swivel joint during operation of the device, a water-conducting connecting member engaged on the outer end of the second pipe, the interior of the connecting member formed by intersecting apertures intersecting each other at an obtuse angle, and a third water-conducting pipe having its inner end engaged on the connecting member and its outer end frictionally connected to an end of the jump rope.
REFERENCES:
patent: D194920 (1963-04-01), Darling
patent: 331806 (1885-12-01), McGahan
patent: 835882 (1906-11-01), Eggers
patent: 911717 (1909-02-01), Gibbs
patent: 1634261 (1927-07-01), Knaliff
patent: 1866844 (1932-07-01), De Vos
patent: 2558663 (1951-06-01), Olschewski
patent: 2580626 (1952-01-01), Warren
patent: 3326551 (1967-06-01), Clarke
patent: 3481600 (1969-12-01), Lang, Sr. et al.
"Skip-A-Roo" The Evening Star, Washington, D. C. Apr. 27, 1965, pp. B-22.
Fisher William L.
Kramer Arnold W.
Pinkham Richard C.
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