Patent Yard Sign in
Expired Canadian patentCanada

Partial shunt switching limiter for a spacecraft solar-panel or like power-source array

CA 1248174 A · Owner: Hughes Aircraft Company · Inventors: Martinelli, Robert M.; Ahrens, Allan F.

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

This regulating system for an array of solar panels or the like consists of a tap connection into the array, and a boost switching regulator connected to the tapped array. The tap connection divides the array into first and second portions, and the switching regulator is connected so that its power-input terminals are across only one of the two portions of the array. The power-output terminals of the switching regulator are connected across the load (i.e. across the entire array), and the sensing or feedback terminals of the regulator receive a signal which acts as a measure of voltage or current at the load. Boost regulators do not dump overvoltage into a dissipative load; hence 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 January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 29, 1986
GrantedJanuary 3, 1989
Term endedJanuary 3, 2006
Patent numberCA 1248174 A
Classification (IPC)H02M3/10 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedAug 29, 1986Patent grantedJan 3, 1989Term endedJan 3, 2006

Sources & verification

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