Abstract: A unitized, switch activating mechanism for use in keyboard assemblies for activating snap dome or similar type switches. The mechanism includes a relatively hard actuating tip portion disposed intermediate an elastomeric conical skirt portion and a light guide portion. The conical skirt functions both as a light reflector and as a return spring. The light guide portion is constructed from a diffused translucent, relatively hard elastomeric material which functions as a highly efficient light guide for uniformly illuminating the key legend of the key board assembly with which the light guide interfaces.

Abstract: A swim fin includes a foot receptacle for attaching to a swimmer or diver's foot. A pair of parallel beam supports are secured to the foot and toe portion of the foot receptacle and support a plurality of hydrofoil blades therebetween in a pivotal attachment. Limits are provided to restrict the pivotal motion of the hydrofoil blades to provide an optimum angle of attack for the hydrofoil blades during the swimming stroke.

Abstract: A quick-disconnect apparatus for quickly and conveniently disconnecting and reconnecting an inflator hose and a diver's buoyancy jacket. The invention is disclosed in the form of an elbow configuration for use on the buoyancy jacket in the place of conventional "screw" type connection devices used throughout the diving industry. The quick-disconnect of the present invention comprises a plastic right angle elbow which couples the inflation hose to the buoyancy jacket. This coupling is accomplished by a novel lock ring member and a complementary pin ring. The lock ring member provides a plurality of slotted pin guides and an expandable gap which permits the lock ring to selectively engage a nut ring secured to the buoyancy jacket. Rotation of the lock ring in one direction closes the gap and reduces the inner diameter of the lock ring to engage the nut ring.