US PATENT SUBCLASS 114 / 56.1
DISPLACEMENT-TYPE HULL (e.g., specific aftbody)

Current as of: June, 1999
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114 /   HD   SHIPS

56.1DISPLACEMENT-TYPE HULL (e.g., specific aftbody) {9}
57  DF  .~> Screw propeller type
58  DF  .~> Paddle wheelers
59  DF  .~> Spindle
60  DF  .~> Canal and ferry boats
61.1  DF  .~> Multiple hulls {8}
61.26  DF  .~> Having specific dimensional or speed ratio (e.g., Froude number)
61.27  DF  .~> Having specific forebody {2}
61.31  DF  .~> Having specific midbody (e.g., waist)
61.32  DF  .~> Having specific bottom {3}

DEFINITION

Classification: 114/56.1

DISPLACEMENT-TYPE HULL (e.g., specific aftbody):

(under the class definition) Subject matter wherein (a) a particular structural aspect (e.g., shape, cross-section, contour, etc.) of that portion of the marine vehicle which furnishes buoyancy when in contact with the water and to which the main supporting surface (e.g., deck) and other parts are attached (i.e., hull) is detailed, and (b) the marine vehicle when in contact with the water is at all times only supported by the volume of water moved out of its proper place by the hull.

(1)

Note. In the marine vehicles classified herein, the hull or an attachment to the hull is such that as the hull moves through or across the surface of the water, a force is not generated tending to either raise the vehicle out of the water or to change the fore and aft drafts of the vehicle relative to each other.

(2) Note. In the marine vehicles classified herein, some portion of a hull extends above the surface of the water when the vehicle is in use.

(3) Note. This and the indented subclasses deal with a specific detail of the shape, cross-section, contour, etc., of the water-contacting surface of a marine vehicle hull. All of the original patents within the scope of this project have been placed in compliance with this line. However, the patents currently found in other subclasses, not included within the scope of this project, have not been checked for compliance with this line and will be screened at a later date.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39.25+, for a sailpowered watercraft having a specifically defined hull shape.

65+, for the construction of the hull of a marine vehicle or of a nonhull marine vehicle component (e.g., cabin, bulkhead, decking, etc.). 271+, for planing-type hulls or hull attachments which alter trim or provide a dynamic lift to the marine vehicle.

355+, for a method for constructing or making the hull of a boat or the structure of the boat hull.

SEE OR SEARCH CLASS

244, Aeronautics,

105, 107 for air ships adapted to marine use.

440, Marine Propulsion, appropriate subclasses, for specific features involved in marine vehicle propulsion.