Trolley-swing

Details Trolley-swing Trolley-swing

1978-04-18

1980-02-26

Pinkham, Richard C.

Undertaking

A63F 706

Patent

active

041902483

ABSTRACT:
A pivotally suspended trolley swing that can be propelled by the rider in both a horizontal direction and the radial direction of a normal swing. The device comprises a rigid frame which supports a trolley track at a selected height above the ground. The trolley, which is mounted for to and fro motion along the track, comprises a carrier near the front and rear ends of which are pivotally attached the upper ends of rigid hanger struts which support the swing. The hanger struts are also pivotally connected by interconnecting means at their lower ends. Seats are rigidly attached to the hanger struts. Hand holds fixed to each of the hanger struts, and foot rests on the interconnecting means, enable a swinger while seated on one of the seats, to exert manual pull and foot thrust to apply a rotational torque to the swing in a vertical plane.

REFERENCES:
patent: 936818 (1909-10-01), Schilling
patent: 1254890 (1918-01-01), Douglass
patent: 1548535 (1925-08-01), Lyderker
patent: 2083574 (1937-06-01), Mott
patent: 2307141 (1943-01-01), Ladd
patent: 2448325 (1948-08-01), Poorman, Jr.
patent: 2510223 (1950-06-01), Hart
patent: 3145024 (1964-08-01), Grudoski
patent: 3391931 (1968-07-01), Worley
patent: 3447802 (1969-06-01), Grudoski
patent: 3674262 (1972-07-01), Tomalinas
patent: 3838854 (1974-10-01), Hendrickson
Popular Science, Jun. 1970, vol. 196, #6.

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