Other

Timex Corporation

Norman Sherman

Victor E Shiff

An array of axially spaced rotating airfoils having funnel strips on the blades to increase the lift to drag ratio and generate thrust are rotatably driven by small motors with rotating airfoils, also having funnel strips to enhance thrust. The small motors are mounted on the tips of one set of rotating airfoils, or on an auxiliary drive member, so as to provide rotational torque for the array, thereby amplifying thrust generated by the fluid motor.

Fluid motor apparatus for amplifying thrust

A funnel strip is added to a rotary airfoil, which utilizes the Bernoulli principle to increase the velocity of air over the suction side of the rotating airfoil to increase the lift. The device is applicable to thrust-producing devices, such as propellers, as well as to wind-powered devices.

Funneled rotary foil

A strap for holding a wristwatch has a pair of separable flexible strap ends adapted to curve around the wrist and to overlap one another to provide an overlapped section. At least one strap end of thermoplastic material has particles of permanently magnetizable material embedded in the thermoplastic material and magnetized to provide rows of alternating magnetic poles. The strap ends have surfaces contacting one another throughout the overlapped section and mutually nesting uniformly spaced interlocking teeth, whereby the magnetized particles provide a holding force resisting separation of the strap ends, while the nested teeth prevent sliding disengagement movement between strap ends.

Growing community of inventors

Woodbury, CT, United States of America

Norman Sherman