Undertaking
Patent
1982-09-30
1985-06-04
Pinkham, Richard C.
Undertaking
272 71, 441 59, A63B 2100
Patent
active
045210110
ABSTRACT:
A hydrodynamic stroke builder has a specially configured aquatic hand section and forearm section with fins to progressively strengthen a person's arms, shoulders, chest and back. The hydrodynamic stroke builder can be interchangeably used by men, women and children alike and permits a wide range of movement with controlled amounts of fluid resistive forces, torque and torsion underwater. The stroke building consists of a hand engaging section which is either flat or convex and which has holes therein so that the user's fingers can readily grasp the hand engaging section. The forearm section conforms to the shape of the user's forearm and has V or U shaped fins extending therefrom to provide the proper resistance when the device is being used. The stroke builder can also include an upper arm section similar in design to the forearm section. The various sections are connected together by way of hinges.
REFERENCES:
patent: 2006915 (1935-07-01), Ferber
patent: 2159972 (1939-05-01), Larson
patent: 2692995 (1954-11-01), Bihan
patent: 2771618 (1956-11-01), Crum
patent: 3111694 (1963-11-01), Nelson
patent: 3286287 (1966-11-01), Martin
patent: 3408670 (1968-11-01), Wolfe
patent: 3789447 (1974-02-01), Lavallee
Pinkham Richard C.
Schneider Matthew L.
Tolpin Thomas W.
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