Vacuum cleaner
CA 1253662 A · Owner: Sanyo Electric Co. Ltd. · Inventors: Morishita, Takuya; Morita, Akihiro; Kurioka, Akihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum cleaner comprising a dust intake portion a, rotary brush provided in the intake portion a drive motor, for driving the rotary thrush a fan motor for suction of, dust, a dust collector for the dust taken in a dust transfer, passage extending from the intake portion to the dust collector, a rotary brush pulley, a drive motor pulley a, belt coupling the above mentioned two pulleys for transmitting the power of the drive motor, at least one of the pulleys being frustoconical, and drive motor stopping means disposed at one side of the belt toward which said one pulley is diametrically smaller and pushable by the belt when the belt is displaced, which can provide to surely protect the …
Read the whole patent
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 May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
- 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.