US4026038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship's maneuvering simulator
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1976-04-05
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Granted: 1977-05-31
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Expires: 1996-04-05
Abstract
Abstract A ship's maneuvering simulator comprises a wheel house of a ship having a projection screen spaced therefrom and a point light source-shadow image projector provided for the projection of a shadow image, and one or more scale models and air-water images controlled by a computer, and a projection device for the projection of a motionless part of a forepart of a ship that is visible from the wheel house. At least two plane translucent projection screens are provided that join one another at an angle, and behind each projection screen the point light source-shadow image projector is mounted such that the central position in the wheel house and the stationary point light source are positioned symmetrically with respect to this projection screen and the models provided are uniform.
Inventors
- 👤 Lubbertus Sunter
- 👤 Geert Jan Prins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:48
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
206 words
A maneuvering simulator, comprising a ship wheel house having a central point location therein, at least two abutting translucent projection screens disposed at an angle to one another and located at a distance from said wheel house, each of said screens having an inner surface and an outer surface a stationary point light source located at a distance behind each said screen, models of coastal terrains associated with said point light sources, each model having a scale factor; means cooperating with each said point light source for effecting the projection of air/water shadow images therefrom onto the outer surfaces of said screens, means for moving said cooperating means and said models, a computer for controlling the movement of said moving means, and a projection device for projecting a motionless image of a portion of a forepart of a ship onto the inner surface of one of said screens, said models being mutually uniform, and said point light sources and said central point being symmetrically disposed relative to said screens, and the mutual relative distances between said sources and said central point being such that the shadow images projected onto the outer surfaces of said screens together form a panoramic view with respect to said central point.
Claim 2
Dependent Claim
206 words
A maneuvering simulator, comprising a ship wheel house having a central point location therein, at least two abutting translucent projection screens disposed at an angle to one another and located at a distance from said wheel house, each of said screens having an inner surface and an outer surface a stationary point light source located at a distance behind each said screen, models of coastal terrains associated with said point light sources, each model having a scale factor; means cooperating with each said point light source for effecting the projection of air/water shadow images therefrom onto the outer surfaces of said screens, means for moving said cooperating means and said models, a computer for controlling the movement of said moving means, and a projection device for projecting a motionless image of a portion of a forepart of a ship onto the inner surface of one of said screens, said models being mutually uniform, and said point light sources and said central point being symmetrically disposed relative to said screens, and the mutual relative distances between said sources and said central point being such that the shadow images projected onto the outer surfaces of said screens together form a panoramic view with respect to said central point.
Claim 3
Dependent Claim
46 words
The simulator according to claim 1, wherein said screens are each located at an equal distance from said central point, the scale factors of said models being mutually equal and said control means effects an equal rate of movement of said models and said cooperating means.
Claim 4
Dependent Claim
54 words
The simulator according to claim 1, wherein said screens are each located at a different distance from said central point, the scale factors of said models being different and said control means effects different rates of movement of said models and said cooperating means in accordance with the ratio of said different scale factors.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |