Patent ID: 11969738
Assignee: TECHNOFAST INDUSTRIES PTY. LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 9:
10. A hydraulic mantle system for a gyratory rock crusher system the system comprising:
a main shaft having a flange and external threads adjacent the flange;
an annular nut body having side surfaces and having internal threads that are threaded onto the external threads of the main shaft;
an annular hydraulic piston having side surfaces that slidingly engage the side surfaces of the annular nut body; and
an annular mantle having an upper neck portion and a lower edge portion, the main shaft extending through the upper neck portion, wherein the upper neck portion of the annular mantle is compressed between the flange of the main shaft and the annular hydraulic piston, wherein a lower end of the annular hydraulic piston defines a recess that receives an upper edge of the annular mantle.