Abstract: A compound or recurve bow has split limbs mounted to limb pockets which are on pivots connected to a handle riser wherein the riser provides an arrow slot between the upper limbs so the arrow is launched from between the upper limbs. The result is an effective compound or recurve archery bow which is more compact and comparatively lighter than heretofore known.

Abstract: A damped waterbed mattress includes an envelope or bladder made of vinyl or other flexible, nonporous elastomeric material and which contains a plurality of modular internal "cells" that are in intentionally restricted fluid communication with one another. These cells are themselves partitioned into at least an inner and an outer chamber that are, likewise, in restricted or metered fluid communication with each other. The top of each cell preferably includes a lighter-than-water portion, such as a small sheet of foam, while the bottom of each cell preferably includes a heavier portion, such as a heavier gauge of vinyl. Thus the cells, along with the chambers contained therein, are filled with water upon the filling of the waterbed proper, and are maintained in their filled and expanded state by virtue of the positive buoyancy of their top surfaces and the more negative buoyancy of their bottom surfaces.

Abstract: A damped waterbed mattress includes an envelope or bladder made of vinyl or other flexible, nonporous elastomeric material and which contains a plurality of modular internal "cells" that are in intentionally restricted fluid communication with one another. These cells are themselves partitioned into at least an inner and an outer chamber that are, likewise, in restricted or metered fluid communication with each other. The top of each cell preferably includes a lighter-than-water portion, such as a small sheet of foam, while the bottom of each cell preferably includes a heavier portion, such as a heavier gauge of vinyl. Thus the cells, along with the chambers contained therein, are filled with water upon the filling of the waterbed proper, and are maintained in their filled and expanded state by virtue of the positive buoyancy of their top surfaces and the more negative buoyancy of their bottom surfaces.

Abstract: A waterbed mattress adapted to fit within a rigid frame comprises a water-containing main chamber and at least one supplemental chamber along the perimeter of the main chamber for containing a fluid giving structural rigidity to the perimeter, particularly along the upper boundary abutting the frame. The supplemental chamber is established by an imperforate flexible membrane internally spanning the mattress corner between the top panel and the adjacent side panel. The cross sectional length of the membrane is not greater than the dimension of the adjacent top and side panel segments which constitute the outer walls of the chamber.