(19)
(11) EP 0 043 538 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.03.1983 Bulletin 1983/11

(43) Date of publication A2:
13.01.1982 Bulletin 1982/02

(21) Application number: 81105056

(22) Date of filing: 30.06.1981
(84) Designated Contracting States:
CH DE FR GB LI SE

(30) Priority: 09.07.1980 US 166810

(71) Applicant: Shop-Vac Corporation
 ()

(72) Inventors:
  • Wacek, Rudolph W.
     ()
  • Miller, Jonathan
     ()

   


(54) Fan suction for vacuum cleaner


(57) A suction producing unit for a vacuum is constructed with a motor having an armature (21) on a vertical shaft (25) whose lower end is supported in a ball-type bearing unit 27 held in a tolerance ring 65. The upper end of the shaft is journalled in a bearing 26 that is held in a swivel support including a spring retainer ring 43. The latter is part of a subassembly which also includes the upper bearing (43) and an upper housing (28). The stator field piece (22) of the motor is clamped between the upper housing (28) and a lower housing (29) which supports the ball-type lower bearing unit (27). A pair of insulating sleeves (121, 123) on the lower end of the motor shaft (25) serve to properly space the armature (21), the lower bearing (27) and the fan blade (70). The latter (70) is mounted on the shaft (25) at its lower end by an insulating flanged cap nut (130) mounted on the lower threaded end (Figure 15) of the motor shaft (25).






Search report