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US 4,392,627 AGranted
Dismantleable boat cradle
OwnerFrederik H. van den Broekinventor
Life of this patent
Estimating the term…
Abstract
Dismantleable boat cradle comprising a frame which forms a closed rectangle and is constructed from profile sections with non-circular cross-section which are connected with each other at the corner points by couplings, which are built up from three tube sections which are mutually perpendicular to each other and which accomodate two frame sections and an upright, of which at least one is open at both ends, said uprights having an adjustable height and carrying support heads.
Claims15
A boat cradle, comprising:
- a frame having the form of a closed rectangle and being constructed from profile sections which define the four sides of the rectangle, the four sides of the rectangle meeting at four corners of the frame;
- at least two of the corners of the frame, a respective coupling being provided;
- each coupling comprising a first tube section for receiving the profile section located at a first side of the frame, a second tube section for receiving the profile section located at a second side of the frame which side is perpendicular to the first side of the frame, and a third tube section extending upright from the frame;
- at least one of the first and the second tube sections being open at its both opposite ends for enabling the respective profile section received in that tube section to be passed completely through that tube section as the position of that tube section is adjusted along that profile section, and the first tube section being adjustable along the respective profile section received therein;
- an upright supported by the third tube section and having a support head thereon for supporting thereon a keel of a boat.
2 more elements
A boat cradle, comprising:
- a frame having the form of a closed rectangle and being constructed from profile sections which define the four sides of the rectangle, the four sides of the rectangle meeting at four corners of the frame;
- the profile sections being of non-circular cross-section;
- at each of the corners, a respective coupling being provided;
- each coupling comprising a first tube section for receiving the profile section located at a first side of the frame, a second tube section for receiving the profile section located at a second side of the frame which side is perpendicular to the first side of the frame, and a third tube section extending upright from the frame;
- at least one of the tube sections being open at both its opposite ends for enabling the respective profile section received at that tube section to be passed completely through that tube section as the position of that tube section is adjusted along that profile section;
- one of the tube sections being longer than each of the other two tube sections;
- the tube sections being mutually perpendicular;
- an upright supported by the third tube section and having a support head therein for supporting thereon a keel of a boat;
- the upright being adjustable in height with respect to the third tube section.
6 more elements
Dependencies are inferred from the claim text.