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Expired Canadian patentCanada

Gravity actuated light socket and switch means

CA 1077598 A · Owner: Pliml, Frank V. (Jr.) · Inventors: Pliml, Frank V. (Jr.)

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

Abstract, A combined gravity operated light socket and switch including a base, fastening means extending from one side thereof and a dielectric housing extending from the other side the housing, being divided into two adjacent chambers. The first chamber is open-ended forming a light socket and the second chamber houses a switching mechanism. The switch includes a headed co-axial shaft extending between the chambers with the head acting as a contact in the base of the socket and the opposite end carrying a flat centrally flanged teeter-totter element supporting a rolling ball and arranged for predetermined angular movement upon angular shifting of the housing. The angular movement of 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 May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 13, 1980
Term endedMay 13, 1997
Patent numberCA 1077598 A
Classification (IPC)H01H35/02

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 13, 1980Term endedMay 13, 1997

Sources & verification

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