Her Majesty the Queen in Right of Canada, As Represented by the Minister

Tornado Drill Ltd.

Volker Stevin Offshore Canada Inc.

Ian MacGregor

John A Kentfield

Denis Gilbert

A glory hole silo comprising a cylindrical casing open at the upper end thereof; an upwardly open porch for supporting a flowline, said porch extending horizontally from and cantilevered with respect to said casing, the upper surface of said porch opening to the interior of said casing and provided with means communicating with the interior of said casing for attaching a flowline; and a removable roof extending over the open upper end of said casing and porch. The porch structure permits flowlines to be readily connected without the intervention of a diver.

Cased glory hole system

The flat-plate type wind turbine rotor blade comprises a rigid spoke having a single thin flexiblie skin associated therewith. The skin is formed to provide a delta-wing and a flap extension. The delta-wing and the flap extension are angularly disposed at about 25.degree. to each other. The spoke lies along the junction of the delta-wing and the flap extension. A substantially rigid peripheral member extends along the margin of the skin. The peripheral member and the spoke are joined to provide a frame to which the skin is secured. Arrays of parallel reinforcing rib members extend between the spoke and the peripheral member. These rib members are mounted on the pressure surface of the skin. The ribs on the delta-wing are positioned at an angle of about 60.degree. from the axis of the spoke; the ribs on the flap extension are positioned at an angle of about 75.degree. from said axis. They therefore coincide with the main flow paths of the air flow over the blade surface. The blade is reduced in weight and cost relative to a conventional double-walled blade or a single skin blade of a thickness sufficient to eliminate the need for reinforcing members.

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Calgary, Canada

Ian MacGregor