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Expired Canadian patentCanada

Cleaning head

CA 1312180 C · Owner: Vax Appliances Limited · Inventors: Brazier, Alan John

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Title: "Cleaning Head" A cleaning head adopted for use on hard surfaces comprises a body(10) formed as two back-to-back housings (20) and (30) which are swivellably mounted on a suction tube (40). Housing (20) contains a liquid applicator assembly (21) which comprises a body (22) of porous material with a facing layer of pile fabric (23). A cleaning liquid is delivered through ducts (46) and(48) to the body 22 so as to spread uniforrhly across the pile fabric (23). A suction slot (29) adjacent to the applicator assembly (21) may be provided to pick up dry dirt. The housing (30) includes a liquid pick-up assembly (31 comprising a slot(32)between a pair of flexible blades (33a,33b).

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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 January 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 1988
GrantedJanuary 5, 1993
Term endedJanuary 5, 2010
Patent numberCA 1312180 C
Classification (IPC)A47L7/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 8, 1988Patent grantedJan 5, 1993Term endedJan 5, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.