US3800724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winged sailing craft
Assignee: Individual
•
Filing: 1972-06-08
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Granted: 1974-04-02
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Expires: 1992-06-08
Abstract
Abstract A sailing craft comprises: A. A BODY, AND B. FIRST AND SECOND ELONGATED WINGS CARRIED BY THE BODY, THE FIRST WING EXTENDING GENERALLY UPRIGHT AND THE SECOND WING EXTENDING GENERALLY LATERALLY AT ONE SIDE OF THE BODY, BOTH WINGS HAVING AIRFOIL CONFIGURATION TO RECEIVE WIND THRUST DEVELOPING MUTUALLY COUNTERACTING ROLL MOMENTS AS WELL AS PROPULSION FORCE ACTING ON THE UPRIGHT WING.
Inventors
- 👤 R Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:16
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/285; B63B1/32; B63B1/322; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/061; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
A sailing craft, comprising a. a body, b. first and second wings each having inboard and outboard ends and extending lengthwise therebetween, the inboard end of each wing having hinge connection to the body characterized as defining two alternate sailing modes and remaining proximate the body in each of said modes, c. means for retaining the first wing to extend substantially horizontally when the second wing extends substantially vertically to define one of said modes, and for alternately retaining the first wing to extent substantially vertically when the second wing extends substantially horizontally to define the other of said modes, and d. there being substructure extending below and connected with the body and relative to which both wings are swingable in unison about a generally vertical axis in each of said modes.
Claim 2
Dependent Claim
132 words
A sailing craft, comprising a. a body, b. first and second wings each having inboard and outboard ends and extending lengthwise therebetween, the inboard end of each wing having hinge connection to the body characterized as defining two alternate sailing modes and remaining proximate the body in each of said modes, c. means for retaining the first wing to extend substantially horizontally when the second wing extends substantially vertically to define one of said modes, and for alternately retaining the first wing to extent substantially vertically when the second wing extends substantially horizontally to define the other of said modes, and d. there being substructure extending below and connected with the body and relative to which both wings are swingable in unison about a generally vertical axis in each of said modes.
Claim 3
Dependent Claim
27 words
The craft of claim 1 wherein said wings are elongated and have airfoil configuration, chordwise, such that the wings when extended laterally are presented to develop lift.
Claim 4
Dependent Claim
13 words
The craft of claim 2 wherein the two wings have substantially like configuration.
Claim 5
Dependent Claim
24 words
The craft of claim 1 including means defining said hinge connection for each wing, with separate hinge axes extending generally lengthwise of the body.
Claim 6
Dependent Claim
32 words
The craft of claim 1 wherein said substructure includes a strut extending below the body to project into water for receiving force exerted by the water over which the body is propelled.
Claim 7
Dependent Claim
12 words
The craft of claim 1 including controllably swingable ailerons on said wings.
Claim 8
Dependent Claim
27 words
The craft of claim 1 wherein the body is forwardly elongated, and including vertical and horizontal stabilizer elements carried by the body generally rearwardly of the wings.
Claim 9
Dependent Claim
18 words
The craft of claim 7 wherein at least one of said elements has controllable angle of attack surfaces.
Claim 10
Dependent Claim
21 words
The craft of claim 1 including means defining said hinge connection for each wing providing at least two orthogonal pivot axes.
Claim 11
Dependent Claim
14 words
The craft of claim 1 having a fuel powered, forward thrust developing means thereon.
Claim 12
Dependent Claim
27 words
The craft of claim 1 wherein the retaining means comprises actuator mechanism to pivot the wings between said modes and to retain the wings in said modes.
Claim 13
Dependent Claim
16 words
Te craft of claim 11 wherein said mechanism is connected with inboard portions of the wings.
Claim 14
Dependent Claim
28 words
The craft of claim 1 including floats carried by outboard portions of said wings to at times engage the water surface and prevent wing engagement with the water.
Claim 15
Dependent Claim
27 words
The craft of claim 5 including duct means carried by the substructure to receive water intake for supply to a ballast tank carried by the craft body.
References Cited (Backward Citations)
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Cited
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US2940688A
Cited
US3145954A
Cited
US3179078A
Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |