초록 ▼

An adjustable rotary positioning mechanism comprising a clevis having a central axis, a first arm, a second arm, and a plurality of bores arcuately spaced around the central axis through the first arm of the clevis. A rod end having a central axis and a plurality of sockets is rotatably connected to

An adjustable rotary positioning mechanism comprising a clevis having a central axis, a first arm, a second arm, and a plurality of bores arcuately spaced around the central axis through the first arm of the clevis. A rod end having a central axis and a plurality of sockets is rotatably connected to the clevis through the central axis. The plurality of sockets are arcuately spaced around the central axis and positioned colinearly with the plurality of bores. A plurality of locking pins are carried in the sockets and configured to project into the plurality of bores to lock the clevis and the rod end together and to retract from the plurality of bores to permit relative movement of the clevis and the rod end. Another embodiment of the invention is a wheelchair comprising a frame, drive wheels and steerable wheels supporting the frame, and paired foot supports each adjustably connected to the frame using the adjustable rotary positioning mechanism described above.

대표청구항 ▼

[I claim:] [1.]a clevis having a central axis, a first arm, a second arm, and a plurality of bores arcuately spaced around the central axis through the first arm of the clevis;a rod end having a central axis and a plurality of sockets, the rod end rotatably connected to the clevis through the centra

[I claim:] [1.]a clevis having a central axis, a first arm, a second arm, and a plurality of bores arcuately spaced around the central axis through the first arm of the clevis;a rod end having a central axis and a plurality of sockets, the rod end rotatably connected to the clevis through the central axis, the plurality of sockets arcuately spaced around the central axis and capable of being positioned colinearly with the bores; anda plurality of locking pins carried in the sockets and configured to project into the plurality of bores to lock the clevis and the rod end together, thereby preventing relative rotation of the rod end with respect to the clevis, the locking pins being configured to retract from the bores to permit relative movement of the clevis and the rod end,where spacing and quantity of the plurality of locking pins and spacing and quantity of the plurality of bores are configured so that one, two, three, or four locking pins project into the plurality of bores to lock the clevis and the rod end together.