Patent ID: 8096083

Claim:
A health enclosure comprising: a door ( 1 ); a rectangular top ( 3 ); a rectangular bottom ( 2 ) having a positioning hole ( 21 ); a rectangular rear wall ( 6 ); a rectangular first side wall ( 4 ); a rectangular second side wall ( 5 ) opposite the first side wall ( 4 ); a telescopic and pivotal board ( 7 ) comprising a board ( 75 ) and two parallel telescopic units ( 73 ) each having one end pivotably attached to the board ( 75 ); a seat assembly ( 8 ) comprising two parallel columns ( 87 ) mounted on the second side wall ( 5 ), a horizontal bar ( 88 ) having both ends slidably put on the columns ( 87 ), a telescopic support post ( 83 ) having an upper end secured to the horizontal bar ( 88 ) and a lower end fastened in the positioning hole ( 21 ), and a collapsible seat ( 81 ) secured to the horizontal bar ( 88 ), and a pivot assembly ( 9 ) comprising a channel ( 91 ) of substantially C-section mounted onto the first side wall ( 4 ), the channel ( 91 ) having a side opening ( 911 ), two inner cylindrical members ( 94 ) each having an aperture ( 941 ), two aligned biasing members ( 92 ) in the channel ( 91 ) wherein one biasing member ( 92 ) has one end anchored in the side opening ( 911 ) and the other end anchored in the aperture ( 941 ), and the other biasing member ( 92 ) has one end anchored in the aperture ( 941 ) and the other end anchored in the side opening ( 911 ), a bolt ( 93 ) inserted through the biasing members ( 92 ) and having both ends fastened in the inner cylindrical members ( 94 ) respectively, two outer cylindrical members ( 96 ) each together with one of the inner cylindrical members ( 94 ) to dispose the other ends of the telescopic units ( 73 ) therein, and two groups of a plurality of fasteners ( 95 ) wherein each group of the fasteners ( 95 ) are driven through the outer cylindrical member ( 96 ) into the inner cylindrical member ( 94 ) to fasten the other ends of the telescopic units ( 73 ) so that a pivotal movement of the telescopic units ( 73 ) twists the ends of the torsion springs ( 92 ) anchored in the apertures ( 941 ) via the inner cylindrical members ( 94 ).