Sp Tech

Other

Peter A Topaz

Stephen R Topaz

Warren L Powers

Carol J Topaz

A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.

Propeller blade

The present invention provides a carrying sling for a person including a flexible sheet, and an elongate flexible member secured in first, second, third and fourth locations to the sheet, the first and second locations defining a first leg loop there between, the first and third locations defining a second leg loop there between, the fourth location defining a torso support, the second and fourth locations defining a first handle there between for lifting the sheet, and the third and fourth locations defining a second handle there between for lifting the sheet.

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Scappoose, OR, United States of America

Peter A Topaz