A glove for the hand to augment propulsion in swimming is made with webs which readily collapse for streamlining in the return movement of the arm after a power stroke. Bare finger tips protrude for dexterity. The glove is configured for mass production by machines making straight cuts and stitches.

An improved leading edge contour for control flaps of the type suitable for use with hydrofoil vessels and the like wherein discontinuities or gaps between the leading edge of the flap and the trailing edge of the fluid foil to which it is attached are held to a minimum; yet, wherein localized or discontinuous differential deflection of the flap leading edge and the foil trailing edge, which inherently occurs as the vessel moves through a fluid medium, does not result in interference between the...

A wind propelled craft adapted for movement over water or ice having an equilateral tetrahedral frame comprising three substantially equidistantly spaced support members adapted to engage and be supported on the surface of the water, four substantially rigid spars connected together at a juncture and extending radially outward therefrom such that they are separated from each other by equal angles, and a plurality of equilength stays connected between each of the spars and the other spars at poin...

In an unmanned underwater instrumentation vehicle, travel to an assigned th and cyclical excursions between depth tolerances above and below that depth are effected by a mechanism that alternatively drops vernier weights by firing explosive release bolts and floods buoyancy chambers by firing explosive piercing cartridges.

A conventional shock absorber is modified by adding a valve cage to the rod nd and providing an additional cylinder outside the shock absorber to form an annular reservoir outside the shock absorber. Temperature sensitive valves open when oil heats to a potentially destructive level, unloading the shock absorber. When the oil cools to a safe operating temperature, the temperature sensitive valves re-close and the shock absorber is again operative.

The invention is directed to a lockable support float, preferably blow molded, for use in swimming pools and the like. It comprises at least first and second expanded members having mateable ends which are adapted to slide over and lock onto a rope. Each member includes an opening that is eccentrically positioned therethrough and alignable with each other for sliding engagement with a rope. Each member includes either a female or a male locking member comprising concentrically positioned annular...

In the illustrative embodiments described, a cylinder-piston device such as a gas spring includes a novel piston rod-piston unit assembly which embodies a snap-on type construction for facilitating the connection and disconnection of the piston unit to and from the piston rod. Resilient tongue members carried by the piston unit are formed with detent-like abutment members at their free ends, which abutment members snap behind an engagement shoulder, formed for example by a disc or groove, on the...

A small watercraft having a float on either side of its hull pivotally connected thereto for rotation about a shaft mounted parallel to the direction of movement of the watercraft between a horizontal operative position and a vertical inoperative position taken when the watercraft is stowed away. The floats can be locked in these two positions and in any position as desired between these two positions. Each float is substantially triangular in planar configuration and diverges in going toward th...

A flexible side connector assembly comprising an in line flexural system ing a plurality of rubber compression elements and a solid shear member. Both the adjacently aligned flexural member and the shear member have grooved solid heads at opposing ends of the assembly for insert of guillotines in opposing platforms which are to be coupled each to the other.

An improved method for unloading break bulk goods from a ship and a cargo transfer carrier for use in the unloading of break bulk goods. The cargo carrier is comprised of a plurality of longitudinal frame members connected by a plurality of cross members with decking affixed thereto to form a horizontal carrier bed. The bed is of sufficient size to accommodate the placement of at least ten, but preferably 14 sling loads of break bulk goods thereon with the allowance for a perimeter work area. A ...