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Expired Canadian patentCanada

Showerhead

CA 1235443 A · Owner: Teledyne Industries, Inc. D/B/A Teledyne Water Pik · Inventors: Smith, David W.; Cammack, Michael A.

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

A showerhead includes a housing which defines different sets of spray outlets and includes a mounting for the housing that defines a path of water flow from an inlet. Formed on the housing are circumferentiallyspaced grooves and formed on the mounting are mating lugs. Lands disposed between successive ones of the grooves include a cam surface which elevates in continuation toward the entrance of a next groove and then terminates in a step leading toward the bottom of that next groove, as a result of which the assembly atop the lands and subsequent movement of the lugs over the cam surface lockingly drops the lugs into corresponding ones of the grooves. The mounting includes a handle through …

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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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 9, 1986
GrantedApril 19, 1988
Term endedApril 19, 2005
Patent numberCA 1235443 A
Classification (IPC)B05B1/00

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedOct 9, 1986Patent grantedApril 19, 1988Term endedApril 19, 2005

Sources & verification

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