Portable commode, shower and bath wheelchair apparatus

1. A portable commode, shower, and bath wheelchair apparatus, comprising:

an aggregate support frame including a support member; and

a seat assembly comprising an attachment assembly, wherein:

said seat assembly can be slidingly attached to said support member by said attachment assembly;

said attachment assembly comprises an aggregate arcuate surface having an aggregate arcuate surface radius of curvature and an aggregate arcuate surface length;

said support member comprises a support member cross-sectional radius of curvature and a support member cross-sectional circumference;

said support member cross-sectional radius of curvature substantially equals said aggregate arcuate surface radius of curvature;

wherein said attachment assembly comprises:

a rotatable member formed to include a first aperture therethrough, wherein said rotatable member comprises a first arcuate surface, and wherein said rotatable member is rotatably disposed about a shaft passing through said first aperture; and

two fixed members each formed to include a corresponding second aperture therethrough, wherein:

each said fixed member comprises a corresponding second arcuate surface;

said shaft passes through each said corresponding second aperture;

each said fixed member is not rotatably disposed about said shaft; and

said first arcuate surface contacts each said corresponding second arcuate surface to form said aggregate arcuate surface length.

2. The portable commode, shower, and bath wheelchair apparatus of claim 1 , wherein said aggregate arcuate surface length is greater than a multiplication product of (0.5) and said support member cross-sectional circumference.

3. The portable commode, shower, and bath wheelchair apparatus of claim 1 , wherein said aggregate arcuate surface length is greater than a multiplication product of (0.67) and said support member cross-sectional circumference.

4. The portable commode, shower, and bath wheelchair apparatus of claim 1 , wherein said aggregate arcuate surface length is greater than a multiplication product of (0.75) and said support member cross-sectional circumference.

5. The portable commode, shower, and bath wheelchair apparatus of claim 1 , wherein the support member comprises a cylindrical member.

6. The portable commode, shower, and bath wheelchair apparatus of claim 1 , wherein the support member comprises a tubular, cylindrical member.

7. The portable commode, shower, and bath wheelchair apparatus of claim 1 , wherein:

the aggregate support frame comprising a plurality of said support members, each comprising a substantially identical said support member cross sectional radius of curvature and a substantially identical said support member cross sectional circumference; and

the seat assembly comprising a plurality of said attachment assemblies each comprising a substantially identical said aggregate arcuate surface length.

8. The portable commode, shower, and bath wheelchair apparatus of claim 1 , further comprising two leg assemblies each coupled to said support member, wherein a length of each said leg assembly can be separately adjusted.

9. The portable commode, shower, and bath wheelchair apparatus of claim 8 , wherein:

a plane of the seat assembly defines a perpendicular axis; and

a long axis of at least one said leg assembly is rotated away from said perpendicular axis.

10. A portable wheelchair apparatus, comprising:

a first support frame comprising a first support member;

a second support frame comprising a second support member;

a mechanical interface comprising a third support member and releaseably attached to said first support frame and to said second support frame; and

a seat assembly comprising a plurality of attachment assemblies, wherein said seat assembly can be slidingly attached to both said first support member and to said second support member by said plurality of attachment assemblies, wherein:

each said plurality of attachment assemblies comprises an identical aggregate arcuate surface, wherein said aggregate arcuate surface comprises an aggregate arcuate surface radius of curvature and an aggregate arcuate surface length;

each of said first support member, said second support member, and said third support member comprises the same support member cross-sectional radius of curvature and a same support member cross-sectional circumference;

said support member cross-sectional radius of curvature substantially equals said aggregate arcuate surface radius of curvature;

wherein each of said plurality of attachment assemblies comprises:

a rotatable member formed to include a first aperture therethrough, wherein said rotatable member comprises a first arcuate surface, and wherein said rotatable member is rotatably disposed about a shaft passing through said first aperture; and

two fixed members each formed to include a second aperture therethrough, wherein:

each said fixed member comprises a corresponding second arcuate surface;

said shaft passes through each said corresponding second aperture;

each said fixed member is not rotatably disposed about said shaft; and

said first arcuate surface contacts each said corresponding second arcuate surface to form said aggregate arcuate surface length.

11. The portable wheelchair apparatus of claim 10 , wherein said first support member, said second support member, and said third support member each comprise a cylindrical member.

12. The portable wheelchair apparatus of claim 10 , wherein said first support member, said second support member, and said third support member each comprise a tubular, cylindrical member.

13. The portable wheelchair apparatus of claim 10 , wherein the mechanical interface comprises a detachable support member that interlocks the first support frame to the second support frame.

14. The portable wheelchair apparatus of claim 10 , further comprising four leg assemblies attached to said first support frame, wherein:

a plane of the seat assembly defines a perpendicular axis; and

a long axis of at least one said leg assembly is rotated away from said perpendicular axis.

15. A portable wheelchair apparatus, comprising:

an aggregate support frame comprising a support member;

four leg assemblies attached to said support frame; and

a seat assembly comprising an attachment assembly, wherein:

said seat assembly can be slidingly attached to said support member by said attachment assembly;

a plane of the seat assembly defines a perpendicular axis;

a long axis of at least one said leg assembly is rotated away from said perpendicular axis;

said attachment assembly comprises an aggregate arcuate surface having an aggregate arcuate surface radius of curvature and an aggregate arcuate surface length;

said support member comprises a support member cross-sectional radius of curvature and a support member cross-sectional circumference;

said support member radius of curvature substantially equals said aggregate arcuate surface radius of curvature;

wherein said attachment assembly comprises:

a rotatable member formed to include a first aperture therethrough;

two fixed members each formed to include a corresponding second aperture therethrough, wherein:

said rotatable member comprises a first arcuate surface;

said rotatable member is rotatably disposed about a shaft passing through said first aperture;

each said fixed member comprises a corresponding second arcuate surface;

said shaft passes through each said corresponding second aperture;

each said fixed member is not rotatably disposed about said shaft; and

said first arcuate surface contacts each said corresponding second arcuate surface to form said aggregate arcuate surface length.

16. The portable wheelchair apparatus of claim 15 , wherein:

the aggregate support frame comprising a plurality of support members, each comprising an identical support member cross-sectional radius of curvature and an identical support member cross-sectional circumference; and

the seat assembly comprising a plurality of said attachment assemblies each comprising an identical aggregate arcuate surface.