Patent ID: 7207537

Claim:
A support apparatus for suspending a display comprising: a holder ( 10 ) having a rod ( 13 ) with a first end adapted to be pivotally mounted on a ceiling and a second end opposed to the first end; an arm ( 30 ) having a first connector ( 31 ) provided at a first end of the arm ( 30 ) and pivotally connected to the second end of the holder ( 10 ), a second connector ( 34 ) provided at a second end of the arm ( 30 ), an upper beam ( 32 ) and a lower beam ( 33 ) pivotally mounted between the first connector ( 31 ) and the second connector ( 34 ) and parallel to each other, an adjuster ( 35 ) adjustably mounted in the second connector ( 34 ), and a shank ( 36 ) with a first end pivotally mounted on the adjuster ( 35 ) and a second end pivotally mounted on the lower beam ( 33 ); a redirector ( 40 ) provided between the arm ( 30 ) and the seat ( 50 ), wherein the second connector ( 34 ) has a shaft ( 342 ) extending downwards from the second connector ( 34 ); the redirector ( 40 ) has a shell ( 42 ) mounted at a lower end of the shaft ( 342 ), a post ( 41 ) rotatably received in the shell ( 42 ) and having at least one protrusion formed on an outer periphery of the post ( 41 ), and a lower portion ( 415 ) of the post ( 41 ) extending out from the shell ( 42 ), and a button ( 43 ) provided in the shell ( 42 ) and formed with a stop ( 431 ) abutting the outer periphery of the post ( 41 ); and the seat ( 50 ) is pivotally mounted on the lower portion ( 415 ) of the redirector ( 40 ), and a seat ( 50 ) mounted on the second connector ( 34 ), wherein the second connector ( 34 ) has a chamber ( 341 ) facing the first end of the shank ( 36 ), the adjuster ( 35 ) has a block ( 351 ) received in the chamber ( 341 ), a finger ( 353 ) mounted on the second connector ( 34 ) and a bolt ( 352 ) extending through the finger ( 353 ) and engaged in the block ( 351 ), and the first end of the shank ( 36 ) is pivotally mounted in the block ( 351 ), wherein the holder ( 10 ) has a first barrel ( 11 ) formed at the first end of the holder ( 10 ), a first lug ( 111 ) formed at a top circumference of the first barrel ( 11 ), a cylinder ( 15 ) secured on the ceiling and pivotally mounted with the first barrel ( 11 ), a second lug ( 151 ) formed at a lower circumference of the cylinder ( 15 ) and opposed to the first lug ( 111 ), a second barrel ( 12 ) formed at the second end of the holder ( 10 ), and a third lug ( 121 ) formed at a lower circumference of the second barrel ( 12 ); and the first connector ( 31 ) has a tube ( 311 ) rotatably mounted on the second barrel ( 12 ) by an axle ( 17 ) and a fourth lug ( 312 ) formed at a top circumference of the tube ( 311 ) and opposed to the third lug ( 121 ).