Voltage clamp to allow low-temperature recharging of nickel-cadmium batteries in emergency lighting fixtures and method of using

Details for Australian Patent Application No. 2007323912 (hide)

Owner Crenshaw, D.

Inventors Crenshaw, David B.

Agent Davies Collison Cave

Pub. Number AU-A-2007323912

PCT Pub. Number WO2008/064008

Priority 11/558,955 13.11.06 US

Filing date 13 November 2007

Wipo publication date 29 May 2008

International Classifications

H02J 7/06 (2006.01) Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries - using discharge tubes or semiconductor devices

F21L 4/08 (2006.01) Electric lighting devices with self-contained electric batteries or cells

H03D 13/00 (2006.01) Circuits for comparing the phase or frequency of two mutually-independent oscillations

Event Publications

18 June 2009 PCT application entered the National Phase

  PCT publication WO2008/064008 Priority application(s): WO2008/064008

29 March 2012 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(e). Examination has been requested or an examination report has issued for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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