Anatomically manipulable rotatable implement

Details Anatomically manipulable rotatable implement Anatomically manipulable rotatable implement

1979-10-19

1982-07-06

Mancene, Gene

Undertaking

46 47, 272 67, 272127, A63H 100

Patent

active

043375936

ABSTRACT:
An anatomically manipulable toy in the form of a rotatable implement comprising a shaft, a massive body portion rigidly attached to the shaft, and a contact element at one end of the shaft. In operation, the rotating implement is generally supported by placing the contact element on a portion of the user's anatomy, typically a hand, with the shaft horizontal, rotation having been initiated by manually imparting a torque to the implement, typically at the shaft. The contact element rolls on the user's anatomy, thereby producing a linear translation therealong. The weight of the implement acting at a horizontal separation from the point of contact causes a precession of the spinning implement about the vertical axis through the point of contact. The rate of precession depends on the rate of angular rotation and the distance of horizontal separation. Thus, the rotating implement precesses at a controllable rate relative to the rate of linear translation, allowing the implement to circumscribe a portion of the anatomy such as the palm, or travel along the arm as the user rotates the arm. The dimensions and mass distribution of the device are characterized by three dimensional parameters, namely the radius of gyration R, the axial distance L between the center of gravity of the device and the point of contact between the contact element and the user's anatomy, and the diameter D of the contact element. The quantity L/(R.sup.2 D) is preferably in the range of 0.05-0.11 reciprocal inches squared (hereinafter sometimes inch.sup.-2).

REFERENCES:
patent: 461948 (1891-10-01), Wilson
patent: 484960 (1892-10-01), Hardy
patent: 1005853 (1911-10-01), Lewis
patent: 1724665 (1929-08-01), Kochi
patent: 2794294 (1957-06-01), Frangos

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