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EP0280409A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Alternative source system

Assignee: Combined Optical Industries Ltd
•
Filing: 1988-01-28
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Granted: —
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Expires: 2008-01-28
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Abstract

Abstract An alternative source system to supply electrical power to a load comprises a switch (2) to control operation of the load (1), first contact means (3,4) adapted to receive conventional battery means, second contact means (3,7) adapted to receive rechargeable cell means, a disconnectable connector to supply external power, e.g. from a mains fed transformer, all being connectable to load through said switch (2). Connection of said connector acts to prevent flow to or from said first contact means (3,4) and enables power to be supplied from said connector either to said load (1) or to said second contact means (3,7), determined by the position of said switch (2). Preferably said first and second contact means share one common terminal contact (3), whereby the battery means can only be either conventional or rechargeable.

Inventors

  • 👤 Robert John Roote
  • 👤 Ian John Smithers
  • 👤 Ian Kenneth Pasco
  • 👤 Paul James Fisher

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 21:43
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/04

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 114 words
An alternative source system to supply electrical power to a load, characterised in that it comprises a switch (2) to control operation of the load (1), first contact means (3,4) adapted to receive conventional battery means, second contact means (3,7) adapted to receive rechargeable cell means, a disconnectable connector to supply external power, e.g. from a mains fed transformer, all being connectable to load through said switch (2), wherein connection of said connector acts to prevent flow to or from said first contact means (3,4) and enables power to be supplied from said connector either to said load (1) or to said second contact means (3,7), determined by the position of said switch (2).
Claim 2
Dependent Claim 114 words
An alternative source system to supply electrical power to a load, characterised in that it comprises a switch (2) to control operation of the load (1), first contact means (3,4) adapted to receive conventional battery means, second contact means (3,7) adapted to receive rechargeable cell means, a disconnectable connector to supply external power, e.g. from a mains fed transformer, all being connectable to load through said switch (2), wherein connection of said connector acts to prevent flow to or from said first contact means (3,4) and enables power to be supplied from said connector either to said load (1) or to said second contact means (3,7), determined by the position of said switch (2).
Claim 3
Dependent Claim 33 words
A system as claimed in claim 1, characterised in that said first and second contact means share one common terminal contact (3), whereby the battery means can only be either conventional or rechargeable.
Claim 4
Dependent Claim 40 words
A system as claimed in either claim 1 or claim 2, characterised in that said first contact means (3,4) are connected to said load by at least one additional switch (6), normally closed but opened by contact by said connector.
Claim 5
Independent Claim 20 words
A system as claimed in any one of the preceding claims, characterised in that the load (1) is a lamp.

References Cited (Backward Citations)

DE2117257A1 Cited
US4282562A Cited
GB2077525A Cited
GB2081531A Cited

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