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US 4,730,488 AGranted
Windsock with wind speed indicators
AssigneeSpark S.R.L.
InventorEdward David
Life of this patent
Estimating the term…
Abstract
A windsock used for indicating wind direction is provided on an upper side with a multiplicity of spaced chevrons for enhancing the detection of wind direction. The chevrons are spaced from one another by such distances that each chevron represents the addition of 4 or 5 knots to the prevailing wind velocity. Accordingly, if 4 chevrons are visible from above, the prevailing wind speed is 4 to 5 knots greater than if only 3 chevrons are visible from above.
Claims17
A device for indicating wind direction, comprising:
- an elongate tapered tube of flexible material having a first opening at one end and a second opening at an opposite end, said second opening having a smaller area than said first opening;
- means for supporting said tube at said one end so that said first opening is disposed in a substantially vertical plane, said means for supporting including means for enabling rotation of said tube and of said vertical plane about a vertical axis;
- and
- means disposed on an upper side of said tube for enhancing visual detection of said tube and of an angular orientation of said tube about said vertical axis, said means for enhancing including a plurality of discrete irregular geometrical shapes spaced from one another along a line extending from said first opening toward said second opening, each of said geometrical shapes being oriented to define a direction extending along said line, each of said geometrical shapes being visually contrasting with respect to portions of said tube located between said geometrical shapes, each of said geometrical shapes having a point pointing along said line.
1 more element
A device for indicating wind direction, comprising:
- an elongate tapered tube of flexible material having a first opening at one end and a second opening at an opposite end, said tube having in an extended configuration an axis of symmetry extending from said first opening to said second opening, said second opening having a smaller area than said first opening;
- means disposed on an outer surface of said tube and on one side thereof for enhancing visual detection of said tube and of an angular orientation of said tube about an axis oriented substantially perpendicularly to said axis of symmetry at said first opening, said means for enhancing including a plurality of discrete irregular geometrical shapes spaced from one another along a line extending from said first opening toward said second opening, each of said geometrical shapes being oriented to define a direction extending along said line, each of said geometrical shapes being visually contrasting with respect to portions of said tube located between said geometrical shapes, each of said geometrical shapes having a point pointing along said line.
A device for indicating wind direction, comprising:
- an elongate tapered tube of flexible material having a first opening at one end and a second opening at an opposite end, said second opening having a smaller area than said first opening;
- means for supporting said tube at said one end so that said first opening is disposed in a substantially vertical plane, said means for supporting including means for enabling rotation of said tube and of said vertical plane about a vertical axis;
- and
- means disposed on an upper side of said tube for enhancing visual detection of said tube and of an angular orientation of said tube about said vertical axis, said means for enhancing including a plurality of irregular geometrical shapes spaced from one another along a line extending from said first opening toward said second opening, each of said geometrical shapes being oriented to define a direction extending along said line, each of said geometrical shapes being visually contrasting with respect to portions of said tube located between said geometrical shapes, said shapes being spaced from one another so that the number of said shapes visible from said one side of said tube indicates substantially the magnitude of wind speed.
1 more element
A device for indicating wind direction, comprising:
- an elongate tapered tube of flexible material having a first opening at one end and a second opening at an opposite end, said tube having in an extended configuration an axis of symmetry extending from said first opening to said second opening, said second opening having a smaller area than said first opening;
- means disposed on an outer surface of said tube and on one side thereof for enhancing visual detection of said tube and of an angular orientation of said tube about an axis oriented substantially perpendicularly to said axis of symmetry at said first opening, said means for enhancing including a plurality of irregular geometrical shapes spaced from one another along a line extending from said first opening toward said second opening, each of said geometrical shapes being oriented to define a direction extending along said line, each of said geometrical shapes being visually contrasting with respect to portions of said tube located between said geometrical shapes, said shapes being spaced from one another so that the number of said shapes visible from said one side of said tube upon attachment of said tube to a vertical support indicates substantially the magnitude of wind speed past said vertical support.
Dependencies are inferred from the claim text.