Patent ID: 8051786

Claim:
A stoker grate for circulating a combustible material, the stoker grate having an annular shape, comprising a stationary grate sheet support having an annular shape, a moveable grate sheet support fitting with prop rolls on the stationary grate sheet support, the moveable grate sheet support comprising a pair of rectangular moveable grate sheet supports opposed to each other and another pair of arc-shaped moveable grate sheet supports opposed to each other to form an annular-shaped assembled support, the rectangular moveable grate sheet supports being hinged with the annular-shape moveable grate sheet supports, one of the rectangular moveable grate sheet supports or the arc-shaped moveable grate sheet supports being connected with a power input link, stationary grate sheets fitting with mounting transverse beams of the stationary grate sheet support, moveable grate sheets fitting with mounting transverse beams of the moveable grate sheet supports, the moveable grate sheets and the stationary grate sheets being disposed alternatingly, the stoker grate being structured so that movement of the power input link and resulting movement of the moveable grate sheets causes the combustible material to move by circulating in an enclosed annular path of movement so as to be capable of traveling completely around a perimeter of the annular-shaped stoker grate.