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Vacuum cleaning appliances

  • US 4,573,236 A
  • Filed: 07/02/1984
  • Issued: 03/04/1986
  • Est. Priority Date: 07/08/1983
  • Status: Expired due to Term
First Claim
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1. In a vacuum cleaning apparatus comprising a main casing having a dirt laden air conveying passageway leading thereto and containing a motor-driven fan unit, and including means for dirt retention in the apparatus, a hose section communicating with the passageway and providing an inlet for dirt laden air, a cleaning head as part of a floor engaging section of the apparatus mounted adjacent the main casing so as to be rotatably moveable relative to the casing to engage the floor and including a rotary brush unit in the casing, the cleaning head communicating separately in relation to the hose section with the air passageway, the improvement which comprises:

  • an air control valve means selectively positionable with the air passageway and mounted on the cleaning head for selectively directing dirt laden air into the main casing from either the cleaning head or the hose section through the air passageway depending upon the position of the valve;

    wherein, when the cleaning head is rotated to one first position relative to the main casing, the cleaning head is connected to the passageway in the casing by the air control valve means; and

    when the cleaning head is rotated to a second position, the cleaning head is disconnected from the air passageway and the passageway is connected to the hose section by the air control valve means.

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