Folding latch mechanism with multiple latch positions

A seatback folding latch mechanism for a wheelchair comprising a seat rail and a back cane for supporting a seatback, the seatback folding latch mechanism comprising:

• a latch plate for supporting the back cane, the latch plate comprising a first relief and a second relief spaced from the first relief,
• a pivot pin between the first and second reliefs supporting the latch plate for pivotal movement in relation to the seat rail,
• a first catch supported in relation to the latch plate for releasably engaging the first relief upon pivoting the latch plate in a first direction to lower the back cane to a folded position, and
• a second catch supported in relation to the latch plate for releasably engaging the second relief upon pivoting the latch plate in a second direction to raise the back cane to an unfolded position, wherein the first and second catches are positioned with the latch plate therebetween, wherein the second catch is selectively supported in one of a plurality of support positions in relation to the latch plate to permit an angle of the back cane to be adjusted in the unfolded position.

A seatback folding latch mechanism for a wheelchair comprising a seat rail and a back cane for supporting a seatback, the seatback folding latch mechanism comprising:

• a latch plate for supporting the back cane, the latch plate comprising a first relief and a second relief spaced from the first relief,
• a pivot pin between the first and second reliefs supporting the latch plate for pivotal movement in relation to the seat rail,
• a first catch supported in relation to the latch plate for releasably engaging the first relief upon pivoting the latch plate in a first direction to lower the back cane to a folded position, and
• a second catch supported in relation to the latch plate for releasably engaging the second relief upon pivoting the latch plate in a second direction to raise the back cane to an unfolded position, wherein the first and second catches are positioned with the latch plate therebetween, wherein the pivotal movement of the latch plate is limited by a travel pin, which cooperates with a travel slot in the latch plate.

A seatback folding latch mechanism for a wheelchair comprising a seat rail and a back cane for supporting a seatback, the seatback folding latch mechanism comprising:

• a latch plate for supporting the back cane, the latch plate comprising a first relief and a second relief spaced from the first relief,
• a pivot pin between the first and second reliefs supporting the latch plate for pivotal movement in relation to the seat rail,
• a first catch supported in relation to the latch plate for releasably engaging the first relief upon pivoting the latch plate in a first direction to lower the back cane to a folded position, and
• a second catch supported in relation to the latch plate for releasably engaging the second relief upon pivoting the latch plate in a second direction to raise the back cane to an unfolded position, wherein the first and second catches are positioned with the latch plate therebetween, wherein the latch mechanism, together with the catches, are supported in relation to the seat rail and the back cane by a mounting bracket, wherein the mounting bracket is supported in relation to the seat rail.

A seatback folding latch mechanism for a wheelchair comprising a seat rail and a back cane for supporting a seatback, the seatback folding latch mechanism comprising:

• a latch plate for supporting the back cane, the latch plate comprising a first relief and a second relief spaced from the first relief,
• a pivot pin between the first and second reliefs supporting the latch plate for pivotal movement in relation to the seat rail,
• a first catch supported in relation to the latch plate for releasably engaging the first relief upon pivoting the latch plate in a first direction to lower the back cane to a folded position, and
• a second catch supported in relation to the latch plate for releasably engaging the second relief upon pivoting the latch plate in a second direction to raise the back cane to an unfolded position, wherein the first and second catches are positioned with the latch plate therebetween, wherein the seat rail is one of two laterally spaced seat rails and the back cane is one of two laterally spaced back canes, the seatback folding latch mechanism being one of two seatback folding latch mechanisms each supported in relation to a corresponding one of the seat rails and supporting a corresponding one of the back canes, wherein a release bar connects the two mechanisms for controlling single-handedly the seatback folding latch mechanisms to release simultaneously the first and second catches from the first and second reliefs, respectively.