Shower door hinge mechanism

1. A hinge mechanism for a half-height shower door, said hinge mechanism comprising:

an upper hinge mechanism and a lower hinge mechanism, said upper hinge mechanism comprising first and second co-operable hinge parts mountable to the shower door, and

a manually-operable element engageable with at least one of said first and second hinge parts of said upper hinge mechanism such that operating said manually-operable element causes one of the first and second hinge parts of said upper hinge mechanism to be moved into a raised or lowered position relative to the other of the first and second hinge parts of said upper hinge mechanism, whereby, in use, operating said manually-operable element causes said shower door to be lifted or lowered,

said lower hinge mechanism including a spring element so arranged as to bias the shower door in an upwards direction against the action of the upper hinge mechanism.

2. The hinge mechanism as claimed in claim 1 , wherein

said second hinge part of the upper hinge mechanism comprises a pin member rotatable within the first hinge part of the upper hinge mechanism, and

said manually-operable element comprises a rotatable handle element engageable with the second hinge part of said upper hinge mechanism such that rotating said rotatable handle element rotates said pin member of said second hinge part of said upper hinge mechanism within said first hinge part of said upper hinge mechanism and causes said first hinge part of said upper hinge mechanism to be moved into a raised position relative to said second hinge part of said upper hinge mechanism, whereby, in use, rotating the rotatable handle element causes said shower door to be lifted.

3. The hinge mechanism as claimed in claim 1 , wherein the first and second hinge parts of the upper hinge mechanism form a rising butt hinge mechanism.

4. The hinge mechanism as claimed in claim 3 , wherein the first and second hinge parts of the upper hinge mechanism comprise respective ramped or inclined portions so configured as to cause relative translational movement between the first and second hinge parts upon rotation of one of the first and second hinge parts.

5. The hinge mechanism as claimed in claim 1 , wherein the first and second hinge parts include a cooperating notch and protrusion respectively, whereby to cause the handle to hold in a closed configuration when the notch and protrusion are brought together so that the protrusion rests in the notch.

6. A shower door apparatus comprising:

a shower door provided with a bottom seal element; and

a hinge mechanism, said hinge mechanism comprising:

an upper hinge mechanism and a lower hinge mechanism, said upper hinge mechanism comprising first and second co-operable hinge parts mountable to the shower door, and

a manually-operable element engageable with at least one of said first and second hinge parts of said upper hinge mechanism such that operating said manually-operable element causes one of the first and second hinge parts of said upper hinge mechanism to be moved into a raised or lowered position relative to the other of the first and second hinge parts of said upper hinge mechanism, whereby, in use, operating said manually-operable element causes said shower door to be lifted or lowered,

said lower hinge mechanism including a spring element so arranged as to bias the door apparatus in an upwards direction against the action of the upper hinge mechanism.

7. The shower door apparatus as claimed in claim 6 , wherein said shower door is a half-height shower door provided with upper and lower pivot hinges, and said upper pivot hinge is provided by said hinge mechanism.

8. The shower door apparatus as claimed in claim 6 , further comprising door rotation inhibiting means for inhibiting rotation of the shower door during operation of said manually-operable element.

9. The shower door apparatus as claimed in claim 8 , wherein said door rotation inhibiting means comprises a seal member between an inside edge of the shower door and a support member.

10. The shower door apparatus as claimed in claim 6 , further comprising shower door position indicating means for indicating whether the shower door is in a lowered position or in a raised position.

11. The shower door apparatus as claimed in claim 6 , wherein

said second hinge part of the upper hinge mechanism comprises a pin member rotatable within the first hinge part of the upper hinge mechanism,

said manually-operable element comprises a rotatable handle element engageable with the second hinge part of said upper hinge mechanism such that rotating said rotatable handle element rotates said pin member of said second hinge part of said upper hinge mechanism within said first hinge part of said upper hinge mechanism and causes said first hinge part of said upper hinge mechanism to be moved into a raised position relative to said second hinge part of said upper hinge mechanism, whereby, in use, rotating the rotatable handle element causes said shower door to be lifted,

the rotatable handle element comprises an elongate grippable portion, and

said upper hinge mechanism is arranged such that, when the shower door is closed, the elongate grippable portion of the rotatable handle element extends in one of: substantially the same direction as the shower door, substantially perpendicularly to the direction of the shower door.

12. The shower door apparatus as claimed in claim 11 , wherein said rotatable handle element is rotatable through a maximum travel of approximately 90 degrees rotation.

13. The shower door apparatus as claimed in claim 6 , wherein said upper hinge mechanism is operable to raise the shower door approximately 10 mm.

14. The shower door apparatus as claimed in claim 6 , wherein the shower door comprises a frame element that supports a shower door panel.

15. The shower door apparatus as claimed in claim 14 , wherein said shower door panel is fabricated from one of: a glass material, a plastics material.

16. The shower door apparatus as claimed in claim 6 , wherein the upper hinge mechanism is a rising butt hinge mechanism operable, upon rotation of a handle from a closed to an open configuration, to cause the door apparatus to move in a downwards direction against the action of the spring element.