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US3890920A Expired / Lapsed US ⏱️ 0.0 years remaining

Controls for aquatic towing craft

Assignee: ARKOS SpA
•
Filing: 1973-06-06
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Granted: 1975-06-24
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Expires: 1993-06-06
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Abstract

Abstract A compact, unitary, self-powered device for propelling an individual through water at or near the surface. Handles are located at the forward end of the device adapted to be grasped by the individual being towed and by means of which the propelling device may be easily controlled and maneuvered through the water. ''''Homing'''' vanes are provided to cause the device to circle about a substantially fixed center when the handles are released by the individual.

Inventors

  • 👤 Eggert Buelk

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 19:09
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/08; A63B35/12

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 128 words
A unitary self-powered craft for towing an individual through water at or near its surface comprising; motive power means including means to produce a motive force when immersed in water, handle means on said craft to be grasped by an individual whereby said individual is propelled through the water when said craft is in operation said handle means being fixed and vertically oriented with respect to said craft and adapted to enable said person to control the direction of movement of said craft through the water, and means on said craft to cause said craft to turn in a constant arc of curvature when said handle means is released whereby said craft returns to substantially the same location occupied by the craft when said handle means was released.
Claim 2
Dependent Claim 128 words
A unitary self-powered craft for towing an individual through water at or near its surface comprising; motive power means including means to produce a motive force when immersed in water, handle means on said craft to be grasped by an individual whereby said individual is propelled through the water when said craft is in operation said handle means being fixed and vertically oriented with respect to said craft and adapted to enable said person to control the direction of movement of said craft through the water, and means on said craft to cause said craft to turn in a constant arc of curvature when said handle means is released whereby said craft returns to substantially the same location occupied by the craft when said handle means was released.
Claim 3
Dependent Claim 115 words
A unitary self-powered craft for propelling an individual through water at or near its surface comprising; motive power means including means to produce a motive force in a given direction when immersed in water, control means operable by an individual being propelled through the water by said craft to control the direction of movement of said craft through the water, the homing means on said craft operable to turn said craft in a circle about a substantially fixed center when the direction of movement of said craft is not controlled by said control means, said homing means being comprised of a series of fixed vanes oriented at an angle with respect to said given direction.
Claim 4
Dependent Claim 115 words
A unitary self-powered craft for propelling an individual through water at or near its surface comprising; motive power means including means to produce a motive force in a given direction when immersed in water, control means operable by an individual being propelled through the water by said craft to control the direction of movement of said craft through the water, the homing means on said craft operable to turn said craft in a circle about a substantially fixed center when the direction of movement of said craft is not controlled by said control means, said homing means being comprised of a series of fixed vanes oriented at an angle with respect to said given direction.
Claim 5
Dependent Claim 76 words
A unitary self-powered craft adapted to be propelled through water at or near its surface comprising motor means, propeller means driven by said motor means to produce a motive force in a given direction of movement when immersed in water, guard means having a portion thereof surrounding said propeller means and including at least one fixed vane located to the rear of said propeller and oriented at an angle with respect to said direction of movement.
Claim 6
Dependent Claim 76 words
A unitary self-powered craft adapted to be propelled through water at or near its surface comprising motor means, propeller means driven by said motor means to produce a motive force in a given direction of movement when immersed in water, guard means having a portion thereof surrounding said propeller means and including at least one fixed vane located to the rear of said propeller and oriented at an angle with respect to said direction of movement.
Claim 7
Dependent Claim 153 words
A unitary self-powered craft for propelling an individual through water at or near its surface comprising; motor means, motive force producing means driven by said motor means and adapted to produce a motive force in a given direction when immersed in water, handle means on said craft adapted to be grasped by an individual from the rear of said craft whereby said individual is propelled through the water when said craft is in operation, said handle means being fixed on the forward portion of said craft and vertically oriented with respect to said direction and adapted to enable said individual to control the direction of movement of said craft, said motive force producing means being substantially aligned with and located to the rear of said motor means whereby when said handle means is grasped by an individual from the rear of said craft it lies substantially wholly between the arms of said individual.
Claim 8
Dependent Claim 153 words
A unitary self-powered craft for propelling an individual through water at or near its surface comprising; motor means, motive force producing means driven by said motor means and adapted to produce a motive force in a given direction when immersed in water, handle means on said craft adapted to be grasped by an individual from the rear of said craft whereby said individual is propelled through the water when said craft is in operation, said handle means being fixed on the forward portion of said craft and vertically oriented with respect to said direction and adapted to enable said individual to control the direction of movement of said craft, said motive force producing means being substantially aligned with and located to the rear of said motor means whereby when said handle means is grasped by an individual from the rear of said craft it lies substantially wholly between the arms of said individual.
Claim 9
Dependent Claim 116 words
A unitary self-powered craft for towing an individual through water at or near its surface comprising; motive power means including means to produce a motive force in a given direction when immersed in water, control means on said craft operable by an individual being towed to control the direction of movement of said craft through the water, and means on said craft to cause said craft to turn in a constant arc of curvature when said control means is inOperative whereby said craft returns to substantially the same location occupied by the craft when said control means became inoperative said last mentioned means comprising fixed vanes oriented at an angle with respect to said given direction.
Claim 10
Dependent Claim 116 words
A unitary self-powered craft for towing an individual through water at or near its surface comprising; motive power means including means to produce a motive force in a given direction when immersed in water, control means on said craft operable by an individual being towed to control the direction of movement of said craft through the water, and means on said craft to cause said craft to turn in a constant arc of curvature when said control means is inOperative whereby said craft returns to substantially the same location occupied by the craft when said control means became inoperative said last mentioned means comprising fixed vanes oriented at an angle with respect to said given direction.

References Cited (Backward Citations)

US1712620A Cited
US2708759A Cited
US3389558A Cited
US3552347A Cited
US3685480A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-06-23 1978-12-23 1979-06-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-06-23 1982-12-23 1983-06-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-06-23 1986-12-23 1987-06-24 $7700.00 Window Closed / Lapsed

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