US3913516A — Wing to swim or to row

Claim 1

Independent Claim 317 words

A pair of devices for attachment to a member to be manipulated in water to cause forces of propulsion, each device comprising a sleeve having a first end zone and a second end zone and being characterized by a longitudinal centerline, a plurality of equi-spaced struts each of a common length and each having a first end and a second end, pivot means connecting the first end of each strut to the first end zone, said struts being swingable from a first position of general alignment of said struts with said sleeve and a second position of said struts extending radially outwardly and rearwardly toward said second end zone, stop means to limit swinging movement of the second end of each of said struts toward said first end zone, said stop means defining said second position, said second position being such that each of said struts is oriented at a substantially common angle of divergence with respect to the centerline of said sleeve and with the second ends being in a substantially common transverse plane with respect to the sleeve centerline and said second ends defining a curved line in said plane of a substantially common radius from said centerline; a flexible canopy connected to each of said struts and spanning the space between said struts and said sleeve, and said sleeve being of an axial length greater that the distance between the first end zone and said transverse plane, means to connect said sleeve to a member, each of said devices being in coaxial spaced relation and facing in a common direction and being characterized by said curved line of each device defining a complete circle in said transverse plane; and an elongate shaft in the sleeve of each device and said means to connect connecting said sleeve to said shaft, said shaft being pivotally connected to a force transmission means extending radially of said shaft.

Claim 2

Dependent Claim 317 words

A pair of devices for attachment to a member to be manipulated in water to cause forces of propulsion, each device comprising a sleeve having a first end zone and a second end zone and being characterized by a longitudinal centerline, a plurality of equi-spaced struts each of a common length and each having a first end and a second end, pivot means connecting the first end of each strut to the first end zone, said struts being swingable from a first position of general alignment of said struts with said sleeve and a second position of said struts extending radially outwardly and rearwardly toward said second end zone, stop means to limit swinging movement of the second end of each of said struts toward said first end zone, said stop means defining said second position, said second position being such that each of said struts is oriented at a substantially common angle of divergence with respect to the centerline of said sleeve and with the second ends being in a substantially common transverse plane with respect to the sleeve centerline and said second ends defining a curved line in said plane of a substantially common radius from said centerline; a flexible canopy connected to each of said struts and spanning the space between said struts and said sleeve, and said sleeve being of an axial length greater that the distance between the first end zone and said transverse plane, means to connect said sleeve to a member, each of said devices being in coaxial spaced relation and facing in a common direction and being characterized by said curved line of each device defining a complete circle in said transverse plane; and an elongate shaft in the sleeve of each device and said means to connect connecting said sleeve to said shaft, said shaft being pivotally connected to a force transmission means extending radially of said shaft.

Claim 3

Dependent Claim 18 words

The device as set forth in claim 1 wherein said curved line defines a sector of a circle.

Claim 4

Dependent Claim 15 words

The device as set forth in claim 2 wherein said sleeve is of flexible material.

Claim 5

Dependent Claim 26 words

The device as set forth in claim 2 wherein the device includes tie means to hold the struts in said first position when not in use.

Claim 6

Dependent Claim 52 words

The device as set forth in claim 1 wherein the force transmitting means comprises a plurality of elongate force transmitting elements extending a common length in a common direction to terminal ends, a bridging member in parallel spaced of said shaft, and pivot means connecting said termianl ends to said bridging member.

Claim 7

Dependent Claim 79 words

The device as set forth in claim 5 whereiN clamp means are provided on said bridging member for attachment to the gunnel of a boat and an oar, first pivot means is connected to said clamp means and said oar for fore and aft swinging movement of said oar about said first pivot means; and second pivot means are provided to connect said bridging member to said oar; said second pivot means being outboard of said first pivot means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-10-20	1979-04-21	1979-10-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-10-20	1983-04-21	1983-10-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-10-20	1987-04-21	1987-10-21	$7700.00	Window Closed / Lapsed

Wing to swim or to row

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