Gravity operated track

Details Gravity operated track Gravity operated track

1980-05-01

1982-03-16

Peshock, Robert

Supports

Pipe or cable

Extending through plate

46 1K, 248 88, 239276, 238 10E, A63H 3300, A47G 2900, A62C 3122

Patent

active

043194257

ABSTRACT:
A toy that makes use of conventional garden hose or similar flexible tubing to form a rolling track for marbles. The toy includes a number of supports that function to hold the hoses in longitudinal contact at desired height and angular relationships to the supporting surface, thereby defining the course along which a marble will roll. Height may be adjusted by adding or removing lengths of upright supports. Angular "banking" of the track is accomplished by angular positioning clamp members that mount the track to the supports.

REFERENCES:
patent: 1870752 (1932-08-01), Keihing
patent: 2000808 (1935-05-01), Williams
patent: 2451699 (1948-10-01), Twaroski
patent: 3083967 (1963-04-01), Steel
patent: 3132441 (1964-05-01), Mahovsky
patent: 3394489 (1968-07-01), Martin
patent: 3516630 (1970-06-01), Janssens
patent: 3587190 (1971-06-01), Ashion
patent: 3588012 (1971-06-01), Schaefer
patent: 3683514 (1972-08-01), Hughes
patent: 3841223 (1974-10-01), Bertin
patent: 3941342 (1976-03-01), Bradshaw
patent: 4171090 (1979-10-01), Eisenburg

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