Rise and fall cover assembly

Abstract

A cover assembly for a swimming pool and which can be raised and lowered, the cover assembly comprising a frame which is relatively rigid, a covering material which is supported by the frame, and a plurality of extendable and retractable leg members which are associated with the frame such that extension of the leg member causes the frame to be raised and lowering of the leg member causes the frame to be lowered, at least one leg member being powered to enable the leg member to the extended upon demand.

1 . A cover assembly for a swimming pool and which can be raised and lowered, the cover assembly comprising a frame which is relatively rigid, a covering material which is supported by the frame, and a plurality of extendable and retractable leg members which are associated with the frame such that extension of the leg member causes the frame to be raised, and lowering of the leg member causes the frame to be lowered, at least one leg member being powered to enable the leg member to the extended upon demand. 
   
   
       2 . The cover assembly as claimed in  claim 1 , wherein the powered leg member comprises a ram which has an outer member which is fixed and an inner member which can extend or retract relative to the outer member. 
   
   
       3 . The cover assembly as claimed in  claim 1 , wherein a plurality of leg members is powered. 
   
   
       4 . The cover assembly as claimed in  claim 1 , wherein each leg member is powered. 
   
   
       5 . The cover assembly as claimed in  claim 4 , wherein each leg member is water powered. 
   
   
       6 . The cover assembly as claimed in  claim 1 , wherein said frame comprises elongate metal members comprising longitudinal main support beams and transverse cross beams, and an edge member which extends about the frame. 
   
   
       7 . The cover assembly as claimed in  claim 6 , wherein said covering material comprises a flexible material. 
   
   
       8 . The cover assembly as claimed in  claim 7 , wherein said covering material comprises shade cloth. 
   
   
       9 . The cover assembly as claimed in  claim 6 , wherein said covering material is attached to said edge member. 
   
   
       10 . The cover assembly as claimed in  claim 2 , wherein said frame is operatively attached to the inner member of said leg member. 
   
   
       11 . The cover assembly as claimed in  claim 10 , wherein said inner member comprises a bracket and a support arm and said frame is attached to the support arm. 
   
   
       12 . The cover assembly as claimed in  claim 2 , wherein said outer member is sunk into the ground such that the upper end of said outer member is substantially flush with the ground. 
   
   
       13 . The cover assembly as claimed in  claim 12 , wherein said outer member has a length of between 2-4 m and said inner member has a length of between 2-4 m. 
   
   
       14 . The cover assembly as claimed in  claim 4 , wherein the powered leg member is powered by water pressure, the assembly further comprising a water pump, which supplies pressurised water to be powered leg member. 
   
   
       15 . The cover assembly as claimed in  claim 4 , wherein the powered leg member is water powered and the leg member contains a lower water inlet/outlet and the water passes through a narrow diameter portion such that should there be failure of the pump, the cover will fall slowly and not abruptly.