Surface cleaning apparatus

1. An upright surface cleaning apparatus having a front, a rear and opposed lateral sides and comprising:

a) a surface cleaning head having a dirt inlet;

b) an upper section pivotally coupled to the surface cleaning head and pivotable about a first axis between an in use position and a storage position and rotationally mounted to the surface cleaning head and rotatable about a rotational axis between an aligned orientation and at least one non-aligned orientation when in the use position, the upper section is positionable in the storage position when the upper section is in the aligned orientation;

c) an air flow path extending from the dirt inlet to a clean air outlet with a suction motor and a treatment member provided in the air flow path; and

d) an alignment mechanism comprising a first cooperating alignment member associated with the surface cleaning head and a second cooperating alignment member associated with the upper section, the first and second members positioned such that when the upper section is in both the at least one non-aligned orientation and the in use position and is then pivoted toward the storage position engagement of the first and second members urges the upper section to rotate about the rotational axis toward the aligned orientation while simultaneously pivoting about the pivot axis into the storage position.

2. The upright surface cleaning apparatus of claim 1 wherein the suction motor and the treatment member are provided in a cleaning unit and the cleaning unit is removably mounted to the upper section.

3. The upright surface cleaning apparatus of claim 2 wherein the cleaning unit is useable in a first configuration wherein the cleaning unit is mounted on the upright surface cleaning apparatus and at least one additional configuration wherein the cleaning unit is removed from the upright surface cleaning apparatus and attached in air flow communication with the surface cleaning head or wherein the cleaning unit is removed from the upright surface cleaning apparatus and removed from air flow communication with the surface cleaning head and useable as a portable surface cleaning apparatus.

4. The upright surface cleaning apparatus of claim 1 further comprising an anti-rotation locking mechanism comprising at least one engagement member and a complimentary locking member and the complimentary locking member comprises a first cam member and a locking section and the cam member comprises one of the first and second cooperating alignment members.

5. The upright surface cleaning apparatus of claim 4 wherein the first cam member has a length sufficient to guide the upper section to an aligned position if the upper section is out of alignment by up to 15°.

6. The upright surface cleaning apparatus of claim 4 wherein the engagement member is moveably mounted to the surface cleaning head and biased to a disengaged position, and the anti-rotation locking mechanism further comprises a second cam member provided on the surface cleaning head and drivingly associated with the engagement member and the complimentary locking member is provided on the upper section.

7. The upright surface cleaning apparatus of claim 1 wherein the second cooperating alignment member comprises first and second abutment members provided on opposed sides of the upper section and the first cooperating alignment member comprises a stop member provided on the surface cleaning head.

8. The upright surface cleaning apparatus of claim 7 wherein the stop member comprises first and second cooperating abutment members positioned to engage the first and second abutment members.

9. The upright surface cleaning apparatus of claim 8 wherein the stop member comprises a cowling surrounding a portion of the upper section when the upper section is in the storage position.

10. The upright surface cleaning apparatus of claim 9 wherein the cowling is fixedly mounted to the surface cleaning head.

11. The upright surface cleaning apparatus of claim 7 wherein the first and second abutment members are integrally formed with a part of the upper section.

12. The upright surface cleaning apparatus of claim 7 the first and second abutment members have a length sufficient to guide the upper section to an aligned position if the upper section is out of alignment by up to 45°.

13. The upright surface cleaning apparatus of claim 1 wherein the upper section comprises a rotational coupling member having a longitudinally extending member that extends generally along the rotational axis and the upper section is rotatably mounted about the rotational axis.

14. The upright surface cleaning apparatus of claim 13 wherein the rotational axis extends through a portion of the air flow path.

15. The upright surface cleaning apparatus of claim 13 wherein the rotational coupling member comprises a portion of the air flow path.

16. The upright surface cleaning apparatus of claim 15 wherein the rotational coupling member comprises an up flow duet.

17. The upright surface cleaning apparatus of claim 13 wherein the second cooperating alignment member is provided on the rotational coupling member.

18. The upright surface cleaning apparatus of claim 1 wherein the second cooperating alignment member comprises abutment members having abutment surfaces that are fixedly mounted to the upper section and the first cooperating alignment member comprises cooperating abutment members having abutment surfaces that are fixedly mounted to the surface cleaning head.