Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Irregular – flanged or channel forming blade surface
Patent
1977-07-18
1979-01-09
Blix, Trygve M.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Irregular, flanged or channel forming blade surface
416 74, B63H 1604
Patent
active
041332857
ABSTRACT:
A paddle for a boat such as a canoe having a blade and a handle connected by an intermediate portion, all on a common axis, is formed with a modified T-shaped or contoured handle comprising a cross member at the end of the intermediate portion, the cross member being normal to the axis and having discreet prominent projections at the ends thereof extending toward the blade generally parallel to the axis and the intermediate portion being gently enlarged near the handle to provide an abutment or support for the canoeist's palm when his fingers grasp the handle in use of the paddle, the projection, cross member and abutment on each side of the axis of the paddle being formed to provide a generally circular opening of sufficient size to receive the base of the canoeist's thumb and with an access slot having a width approximately the diameter of the circular opening between the free end of the projection and the abutment, the free ends of the projections extending at least to approximately the line joining the centers of the circular openings, the centerline of each slot forming an acute angle with the axis of the paddle, whereby either of the circular openings provide a thumb saddle to improve the grip during canoeing and the projections provide an effective hook when the paddle is held by the intermediate portion and pulled.
REFERENCES:
patent: 1324554 (1919-12-01), Kozlowski
patent: 2140884 (1938-12-01), Shape
patent: 2642074 (1953-06-01), Pedley et al.
patent: 2998613 (1961-09-01), Lynn et al.
Basinger Sherman D.
Blix Trygve M.
Potoroka, Sr. Walter
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