Patent ID: 11892046
Assignee: BEXUS INDUSTRIES CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  A | IPC A  F

Claim 11:
12. The external drum brake anti-falling device, as recited in claim 2, wherein said rotating drum has a left end and a right end oppositely arranged and an axle hole penetratingly provided at a circle center position for said main shaft to pass through, wherein said right end has an annular protruding lip axially protruded along a periphery of said axle hole, wherein said annular protruding lip has an assembling groove arranged radially therealong so as to allow an inner end of a turbination spring to mount therewith, wherein said turbination spring further has an outer end positioned on one end of said carrier in order to constantly provide a rollback force for said rotating drum to position.