Power head device
CA 1212507 A · Owner: Singer Company (The) · Inventors: Glenn, William K. Iii; Jones, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power head device for use with an external source of vacuum, which device includes an outer housing defining therewithin, in one embodiment, a brush chamber a vacuum, chamber and a dry chemical carpet cleaning powder retaining chamber. The powder retaining chamber is situated adjacent the brush chamber and is further fashioned with a device for selectively dispensing the powder onto a carpet. A horizontally oriented brush is provided having bristles offset with respect to a centerline thereof so as to provide improved agitation of the powder into a carpet on rotation of the brush opposite the direction of the offset during a cleaning mode of operation. In a vacuum mode of operating, the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 14, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.