Patent US3889248A successfully refreshed from Google Patents.
US3889248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Faulty battery connection indicator
Assignee: Individual
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Filing: 1973-05-21
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Granted: 1975-06-10
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Expires: 1993-05-21
Abstract
Abstract A faulty connection betwen the terminal post of a battery and the cable connector clamp is determined by means of an indicator connected across the connection. The indicator may take the form of a lamp, a fuse, or any other device which serves to indicate current flow.
Inventors
- 👤 Herbert W Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
306 words
The combination comprising: an automobile-type wet cell battery having first and second terminal posts; first and second insulated cables, one for each of said first and second posts, respectively; first and second clamps, said first clamp being electrically connected to said first cable and being clamped to said first post, said second clamp being electrically connected to said second cable and being clamped to said second post, whereby first and second normally low impedance electrical connections between said first cable and said first post, and between said second cable and said second post are completed; first and second two-terminal indicators, one for each of said first and second low impedance electrical connections, respectively, for indicating the condition of each of said first and second normally low impedance electrical connections; first connecting means for connecting said first two-terminal indicator in parallel with said first normally low impedance electrical connection, said first means comprising a first electrical connection connected directly between one terminal of said first indicator and said first terminal post, and a second electrical connector connected directly between the other terminal of said indicator and said first cable; second connecting means for connecting said second two-terminal indicator in parallel with said second normally low impedance electrical connection, said second means comprising a first electrical connector connected directly between one terminal of said second indicator and said second terminal post and a second electrical connector connected directly between the other terminal of said indicator and said second cable; whereby said first and second indicators are short-circuited by the normally low impedances of the respective normally low impedance electrical connection, said indicators being in the current path of said battery when the normally low impedance of the respective electrical connections increase, the change of state of said indicator due to current flow therethrough indicating said increase in impedance.
Claim 2
Dependent Claim
306 words
The combination comprising: an automobile-type wet cell battery having first and second terminal posts; first and second insulated cables, one for each of said first and second posts, respectively; first and second clamps, said first clamp being electrically connected to said first cable and being clamped to said first post, said second clamp being electrically connected to said second cable and being clamped to said second post, whereby first and second normally low impedance electrical connections between said first cable and said first post, and between said second cable and said second post are completed; first and second two-terminal indicators, one for each of said first and second low impedance electrical connections, respectively, for indicating the condition of each of said first and second normally low impedance electrical connections; first connecting means for connecting said first two-terminal indicator in parallel with said first normally low impedance electrical connection, said first means comprising a first electrical connection connected directly between one terminal of said first indicator and said first terminal post, and a second electrical connector connected directly between the other terminal of said indicator and said first cable; second connecting means for connecting said second two-terminal indicator in parallel with said second normally low impedance electrical connection, said second means comprising a first electrical connector connected directly between one terminal of said second indicator and said second terminal post and a second electrical connector connected directly between the other terminal of said indicator and said second cable; whereby said first and second indicators are short-circuited by the normally low impedances of the respective normally low impedance electrical connection, said indicators being in the current path of said battery when the normally low impedance of the respective electrical connections increase, the change of state of said indicator due to current flow therethrough indicating said increase in impedance.
Claim 3
Dependent Claim
48 words
The invention as defined in claim 1 wherein said first and second connectors of said first and second connecting means are pins, said first pins being driven into a respective terminal post of said battery, said second pins being driven into a respective cable through the insulation thereof.
Claim 4
Dependent Claim
25 words
The invention as defined in claim 2 wherein said indicator is a fuse, the blowing of said fuse indicating the presence of a faulty connection.
Claim 5
Dependent Claim
25 words
The invention as defined in claim 2 wherein said indicator is a lamp, the lighting of said lamp indicating the presence of a faulty connection.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |