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Expired Canadian patentCanada

Electrical balances

CA 1136654 A · Owner: Kunz, Peter · Inventors: Kunz, Peter

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 balance with electromagnetic load compensation has a coil which is arranged on a balance beam. To improve the temperature-dependent performance of the balance and to reduce the amount of space required, the plane of the coil (54) is normal to the longitudinal axis of the balance beam (36) so that magnetic field lines of a permanent magnet (74) parallel to the longitudinal axis of the balance beam cooperate with a current flowing through the coil to produce a force on the balance beam compensating for a load applied to the balance. Such an arrangement is economical to produce and is applicable in particular, to balances, which have a medium degree of resolution in respect of the weighing …

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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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 17, 1980
GrantedNovember 30, 1982
Term endedNovember 30, 1999
Patent numberCA 1136654 A
Classification (IPC)G01G7/00 +2 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedJan 17, 1980Patent grantedNov 30, 1982Term endedNov 30, 1999

Sources & verification

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