Sailing craft rudders

Claim 2

A sailing dinghy rudder comprising a rudder stock, two parallel cheek plates forming parts of said stock, and a rudder blade located between said cheek plates, said stock further comprising a forepart in the form of a length of extruded metal alloy bar having a cross-section such that said forepart has a forward-opening guideway of T-shape in cross-section and two rearward-extending lateral flanges, said two cheek plates being secured to said forepart each by means of a respective one of said lateral flanges.

Claim 3

A rudder as claimed in claim 1, comprising two internal flanges forming integral portions of said forepart, said two internal flanges being between and parallel to said lateral flanges, each of said two cheek plates having a margin held between one of said lateral flanges and one of said internal flanges.

Claim 4

A rudder as claimed in claim 1, comprising two internal flanges forming integral portions of said forepart, said two internal flanges being between and parallel to said lateral flanges, each of said two cheek plates having a margin held between one of said lateral flanges and one of said internal flanges, longitudinal splines integral with said lateral flanges and said internal flanges being deformed and making tight interference fits with said margins of each of said cheek plates respectively.

Claim 5

A rudder as claimed in claim 1, said alloy bar having a cross-section such that there are also two lateral channels, a second length of said bar being secured to said forepart and forming an upper part of said stock.

Claim 6

A rudder as claimed in claim 1, said rudder blade being pivotably mounted between said two cheek plates and having an arcuate edge portion with a plurality of spaced notches therein, a spring-loaded detent bolt being movably guided in slots in said cheek plates for selective engagement with said notches for holding said rudder blade in any selected one of several possible positions.

Claim 7

A rudder as claimed in claim 1, said alloy bar having a cross-section such that there are also two lateral channels, a second length of said bar being secured to said forepart and forming an upper part of said stock, a tiller of substantially C-shaped cross-section having portions of its margins located one in each of said two lateral channels of said upper part, and a screw extending transversely through said tiller being tightenable to secure said tiller in position on said upper part.

Claim 8

A sailing dinghy rudder comprising a rudder stock, two parallel cheek plates forming parts of said stock, and a rudder blade located between said cheek plates, said stock further comprising a forepart in the form of a length of extruded metal alloy bar having a cross-section such that said forepart has a forward-opening guideway of T-shape in cross-section and two rearward-extending lateral flanges, said two cheek plates being secured to said forepart each by means of a respective one of said lateral flanges, said alloy bar having a cross-section such that there are also two lateral channels, a second length of said bar being secured to said forepart and forming an upper part of said stock, said rudder blade being pivotably mounted between said two cheek plates and having an arcuate edge portion with a plurality of spaced notches therein, a spring-loaded detent bolt being movably guided in slots in said cheek plates for selective engagement with said notches for holding said rudder blade in any selected one of several possible positions, a tiller of substantially C-shaped cross-section having portions of its margins located one in each of said two lateral channels of said upper part, and a screw extending transversely through said tiller being tightenable to secure said tiller in position on said upper part.

Claim 9

A sailing dinghy rudder comprising a rudder stock, two parallel cheek plates forming parts of said stock, and a rudder blade located between said cheek plates, said stock further comprising a forepart in the form of a length of extruded metal alloy bar having a cross-section such that said forepart has a forward-opening guideway of T-shape in cross-section and two rearward-extending lateral flanges, said two cheek plates being secured to said forepart each by means of a respective one of said lateral flanges, said alloy bar having a cross-section such that there are also two lateral channels, a second length of said bar being secured to said forepart and forming an upper part of said stock, said rudder blade being pivotably mounted between said two cheek plates and having an arcuate edge portion with a plurality of spaced notches therein, a spring-loaded detent bolt being movably guided in slots in said cheek plates for selective engagement with said notches for holding said rudder blade in any selected one of several possible positions, a tiller of substantially C-shaped cross-section having portions of its margins located one in each of said two lateral channels of said upper part, and a screw extending transversely through said tiller being tightenable to secure said tiller in position on said upper part.