Wheelchair back mounting assembly

A support mechanism for mounting a wheelchair back to a wheelchair post, comprising:

• a mounting clamp assembly for attachment to the wheelchair post, said mounting clamp assembly comprising:
• a clamp block having a forward surface, a rear surface, a first side surface and a second side surface;
• an attachment band for encircling the wheelchair post comprising opposed arms extending around the forward surface of the clamp block to define a space between the forward surface of the clamp block and the band to encircle a wheelchair post;
• a pin extending through aligned openings in the arms of the band and the first and second side surfaces of the clamp block, the pin releasably connecting at least one arm of the band to the first side surface of the clamp block such that said attachment band is openable on at least one side for mounting around the wheelchair and then secured in a closed position wherein the band encircles the wheelchair post, the pin further including a support post extending from an end thereof and protruding from the clamp block, the support post providing at least one point of support for a wheelchair back;
• and
• a threaded clamp fastener extending through a hole defined by the clamp block rear surface and operatively engaged in a hole in the pin, whereby rotation of the fastener draws the band toward the forward surface of the clamp block to reduce the size of the space between the band and the clamp block in order to secure a wheelchair post therebetween;
• and
• a mounting assembly comprising a hanger arm defining a hook for removable engagement of the mounting clamp assembly support post and a self-locking latch pivotally mounted to the hanger arm, the latch defining a locking notch;
• the latch being pivotal between a locked position in which the latch locking notch and the hook define a substantially closed hole and an unlocked position in which the hanger arm hook can be connected to or removed from the support post;
• the latch being shaped and weighted such that the latch will move to the locked position under the force of gravity.

A mounting clamp assembly comprising:

• a band mechanism operatively connectable to a wheelchair post, the band mechanism comprising a clamp block having a rear surface defining a hole, a forward surface, a first side surface and a second side surface;
• the first and second side surfaces having aligned openings;
• a band having opposed arms with openings in functional alignment with the openings in the first and second side surfaces of the clamp block;
• the band extending around the forward surface of the clamp block to define a space between the clamp block forward surface and the band;
• a pin extending through the aligned openings of the band and clamp block, the pin having a bore in functional alignment with the hole in the rear surface of the clamp block;
• at least one of the pin bore and the hole in the rear surface being threaded;
• a clamp fastener extending through the clamp block rear surface hole and being operatively engaged with the bore of the pin, whereby rotation of the fastener in a first direction draws the band toward the forward surface of the clamp block to reduce the size of the space between the band and the clamp block forward surface in order to secure an object between the band and the forward surface of the clamp block, and rotation of the fastener in an opposite direction moves the band away from the forward surface of the block;
• and
• a support post extending from an end of the pin and protruding from the clamp block, the support post providing at least one point of support for a back support mechanism.