×

Air fan apparatus

  • US 3,898,019 A
  • Filed: 11/23/1973
  • Issued: 08/05/1975
  • Est. Priority Date: 10/19/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. Air fan apparatus comprising a rigid frame mounted on a support base, said frame being provided with a top portion;

  • fan means comprising two vertically spaced pairs of centrifugal air fans, the housing of said fans being each fixedly mounted on said frame, the fans of each pair being horizontally aligned, the rotors of each pair being disposed on a common axis, and a single drive shaft connecting the two rotors of each pair of fans, a single drive belt connecting said two drive shafts, a drive motor, a drive belt connecting said motor with one of the mentioned drive shafts to thereby drive the rotors mounted on the latter drive shaft and to simultaneously drive the other drive shaft and the rotors thereon through the single drive belt, and two vibration-damping components, one on each side of the fan means and extending between the support base and the top portion of the frame, said vibration-damping components mounting the two mentioned drive shafts and the drive motor, whereby the vibrations generated by the fan rotor and the drive motor are dampened during operation of both pairs of air fans.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×