Screw-driven fan device

Details Screw-driven fan device Screw-driven fan device

2011-06-14

2011-06-14

Ridley, Richard W (Department: 3656)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

C074S60600R

Reexamination Certificate

active

07958796

ABSTRACT:
A screw-driven fan device includes a screw, a screw nut, a fan, and a connecting unit. An external edge of the screw has a rolling groove formed thereon and a groove formed alternately with the rolling groove. The screw nut, disposed on the screw, has a linking portion. The fan has a rotary axle with a hole formed thereon for screw passing through. The fan further has blades surrounding the rotary axle. The hole has a flange formed on an interior side thereof and engaged with the groove. The connecting unit has a space therein such that the fan can be placed in the space.

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