Patent Yard Sign in
Expired Canadian patentCanada

Power system and a power generation method

CA 1211788 A · Owner: Silcon Elektronic A/S · Inventors: Rathmann, Soren

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A power system includes an a-c power supply which constitutes a voltage source for a user of d-c current. The a-c power supply is designed to generate an output voltage having a trapezoidal wave form. This is achieved by generating a sinusoidal voltage and then suppressing the waves at a predetermined amplitude to obtain flat-topped voltage waves. The edges of the trapezoidal waves representing the output voltage of the a-c power supply have slopes which equal or exceed the corresponding slopes of a sinusoidal curve having the same maximum amplitude and period as the trapezoidal output voltage. The a-c power supply is further designed to maintain the mean or average value, as well as 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 September 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 2003.
  • 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 31, 1984
GrantedSeptember 23, 1986
Term endedSeptember 23, 2003
Patent numberCA 1211788 A
Classification (IPC)H02M1/14 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJan 31, 1984Patent grantedSep 23, 1986Term endedSep 23, 2003

Sources & verification

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