Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
140 words
A wingsail of symmetrical single element design having a region of principle strength (typically its leading edge) (or in a wingsail having two or more elements in which one of the elements includes a region of principle strength), and which is arranged to be mounted in a craft by means of a bearing at the bottom of the sail, the bearing defining an axis of pivoting of the sail or sail element; characterised in that: the axis of pivoting of the sail assembly is arranged to pass through the centre of pressure zone and is arranged to be intersected by at least a part of the region of principle strength at a point at which the sail or sail element is to be attached to the bearing so that the latter will be attached at a point of maximum strength.
Claim 2
Dependent Claim
140 words
A wingsail of symmetrical single element design having a region of principle strength (typically its leading edge) (or in a wingsail having two or more elements in which one of the elements includes a region of principle strength), and which is arranged to be mounted in a craft by means of a bearing at the bottom of the sail, the bearing defining an axis of pivoting of the sail or sail element; characterised in that: the axis of pivoting of the sail assembly is arranged to pass through the centre of pressure zone and is arranged to be intersected by at least a part of the region of principle strength at a point at which the sail or sail element is to be attached to the bearing so that the latter will be attached at a point of maximum strength.
Claim 3
Dependent Claim
47 words
A wingsail assembly for a wingsail propelled craft in which a balancing mass is mounted on a boom attached to the wingsail assembly; characterised in that: locating means is provided, acting on opposite sides of the balancing mass, to locate the latter in an approximately horizontal plane.
Claim 4
Dependent Claim
47 words
A wingsail assembly for a wingsail propelled craft in which a balancing mass is mounted on a boom attached to the wingsail assembly; characterised in that: locating means is provided, acting on opposite sides of the balancing mass, to locate the latter in an approximately horizontal plane.
Claim 5
Dependent Claim
19 words
A wingsail assembly as set forth in claim 2 wherein the locating means comprises a pair of wire stays.
Claim 6
Dependent Claim
21 words
A wingsail assembly as set forth in claim 2 wherein the locating means comprises a mechanical linkage incorporating a pushpull rod.
Claim 7
Dependent Claim
16 words
A wingsail assembly as set forth in claim 2 wherein the locating means comprises hydraulic means.
Claim 8
Dependent Claim
35 words
A wingsail assembly as set forth in claim 2 wherein the final balance position is assured by a fixed or manually adjustable ratio system or by a servo loop which may include a computing link.
Claim 9
Dependent Claim
38 words
A wing which is constructed from spars and ribs which latter define the aerofoil section and lie broadly in the direction of air flow; characterised in that: the ribs are constructed from moulded glass reinforced plastics (GRP) material.
Claim 10
Dependent Claim
38 words
A wing which is constructed from spars and ribs which latter define the aerofoil section and lie broadly in the direction of air flow; characterised in that: the ribs are constructed from moulded glass reinforced plastics (GRP) material.
Claim 11
Dependent Claim
79 words
A wingsail as set forth in claim 7 wherein each rib includes at least one side flange which substends over part of its length an angle greater than 90° to the remainder of the rib, to facilitate the removal of the rib from a mould, and the angle and said part of the rib, are selected so that the flange angle corresponds to the angle of rake of the edge of the sail with which it is to co-operate.
Claim 12
Dependent Claim
27 words
A wingsail as set forth in claim 8 wherein the flange angle reduces to 90° where it is to be attached to a spar or the like.
Claim 13
Dependent Claim
14 words
A sailing craft when fitted with a wingsail as set forth in claim 1.
Claim 14
Dependent Claim
19 words
A sailing craft when fitted with a wingsail assembly as set forth in any of claims 2 to 6.
Claim 15
Dependent Claim
19 words
A sailing craft when fitted with a wingsail constructed as set forth in any of claims 7 to 9.