Rocking cam apparatus for alternating the pressure pattern of a support surface

A rocking cam apparatus, comprising:

• (a) a plurality of cam strips, each said cam strip comprising:
• (i) a base;
• (ii) a plurality of rocking cams, each said rocking cam pivotally coupled to said base by a first revolute joint, wherein the first revolute joint allows the rocking cam to rock between at least a first stable position and a second stable position;
• (iii) an actuation bar, each said rocking cam pivotally coupled to the actuation bar by a second revolute joint, wherein in response to movement of the actuation bar the rocking cams move in unison between a first position and a second position, and wherein a pressure profile on a support surface overlying said cam strip apparatus is altered by movement of the rocking cams;
• and
• (b) a cam strip connection frame configured to retain multiple said cam strips in series and/or parallel connection with each other and the connection frame to span a desired width and/or a desired length to cover a desired support surface.

A rocking cam apparatus, comprising:

• (a) a plurality of cam strips, each said cam strip comprising:
• (i) a base;
• (ii) a plurality of cams, each said cam having two lobes, each said cam pivotally attached at an upper pivot, between the lobes of the cam, to said base, wherein at the bottom of each cam is a lower pivot joint configured for receiving actuation pressure for rotating the cam;
• (iii) two column bars connecting between the lobes of each cam to the lobes of a cam on an adjacent cam strip so that the cams attached to the column bars move in unison;
• (iv) an actuation bar attached to lower pivot joints across a number of said cams, wherein in response to movement of the actuation bar, the cams move in unison between a first position and a second position, thus altering the pressure profile on a surface overlying said cam strip;
• and
• (b) a cam strip connection frame configured to retain multiple said cam strips in series and/or parallel connection with each other and the connection frame to span a desired width and/or a desired length to cover a desired support surface.