US5114104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated control surface
Assignee: United States Department of the Navy
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Filing: 1990-10-01
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Granted: 1992-05-19
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Expires: 2010-10-01
Abstract
Abstract An articulated control surface for flight control utilizes a moldable conl surface that is shaped by contracting and elongating shape memory alloys embedded within the control surface. The shape memory alloys contract when heated via an applied electric current and elongate when cooled, i.e., the electric current is removed. The resulting control surface is capable of generating a curved control surface without any electro/mechanical or hydraulic control systems.
Inventors
- 👤 Manuel Cincotta
- 👤 Richard H. Nadolink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:56
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/44; B64C3/48; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A control surface system comprising: a moldable control surface; a shaping means including at least one Biometal™ fiber for shaping said moldable control surface, said shaping means in mechanical communication with said molding surface wherein said shaping means contracts upon heating and expands upon cooling; means for heating said shaping means; and at least one static spring means embedded in said moldable control surface.
Claim 2
Dependent Claim
64 words
A control surface system comprising: a moldable control surface; a shaping means including at least one Biometal™ fiber for shaping said moldable control surface, said shaping means in mechanical communication with said molding surface wherein said shaping means contracts upon heating and expands upon cooling; means for heating said shaping means; and at least one static spring means embedded in said moldable control surface.
Claim 3
Dependent Claim
91 words
A control surface system for creating a continuously variable, curved control surface in response to a control signal comprising: a control surface; a plurality of shape memory alloy materials in mechanical communication with said control surface, said shape memory alloy materials being capable of macro movement based upon internal molecular structure alteration whereby said macro movement creates the curved control surface; means for altering the internal molecular structure of said shape memory alloy materials in response to the control signal; and at least one static spring embedded within said control surface,
Claim 4
Dependent Claim
91 words
A control surface system for creating a continuously variable, curved control surface in response to a control signal comprising: a control surface; a plurality of shape memory alloy materials in mechanical communication with said control surface, said shape memory alloy materials being capable of macro movement based upon internal molecular structure alteration whereby said macro movement creates the curved control surface; means for altering the internal molecular structure of said shape memory alloy materials in response to the control signal; and at least one static spring embedded within said control surface,
Claim 5
Dependent Claim
93 words
A control surface system for ships operating in water having a temperature in the range of 34° to 100° F., comprising: a moldable elastomeric control surface; a plurality of Biometal™ fibers in mechanical communication with said control surface; means for cycling an electrical voltage across said plurality of Biometal™ fibers wherein said Biometal™ fibers, contract when the electrical voltage is applied and elongate when the electrical voltage is removed, whereby said control surface moves in accordance with said fiber contraction and elongation; and at least one static spring embedded within said control surface.
Claim 6
Dependent Claim
93 words
A control surface system for ships operating in water having a temperature in the range of 34° to 100° F., comprising: a moldable elastomeric control surface; a plurality of Biometal™ fibers in mechanical communication with said control surface; means for cycling an electrical voltage across said plurality of Biometal™ fibers wherein said Biometal™ fibers, contract when the electrical voltage is applied and elongate when the electrical voltage is removed, whereby said control surface moves in accordance with said fiber contraction and elongation; and at least one static spring embedded within said control surface.
References Cited (Backward Citations)
US3042371A
Cited
US3930626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |