US3720839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary motor starter control circuitry including remote and local control of plural batteries
Assignee: PEERLESS PUMP COMPANY A CORP OF
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Filing: 1972-03-17
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Granted: 1973-03-13
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Expires: 1992-03-17
Abstract
Abstract An auxiliary starter circuit for an engine-driven fire pump which circuit is located upon the engine itself while the primary automatic starting circuit is located at a distance therefrom whereby the engine may be easily started manually if desired. The circuitry components for starting the engine include two alternatively usable batteries which are arranged to be selectively connected in series with an engine starter. The auxiliary starter circuit includes a double pole, two-position toggle switch which selects the desired battery and a threeposition (start-run-off) toggle switch which is manipulated to momentarily connect the starter in series with the selected battery until the engine has been started and to thereafter permit the engine to continue to run until it is switched to the ''''off'''' position.
Inventors
- 👤 G Spahr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:03
CPC Classifications
F; F02; F02N; F02N11/00; F02N11/08; F02N11/0803; F02N11/0807; F02N11/0862; F02N11/0866
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
257 words
In a starting circuit for an engine having a starter and first and second batteries which are arranged to be selectively connected in series with said starter, each of said first and second batteries having a separate circuit to said starter including a normally open relay contact, secondary circuits for each of said first and second batteries including a relay coil for closing the relay contact connected to the associated battery, an additional circuit connected to electrical equipment necessary for operation of the engine, primary switch means located at a point remote from said engine for selecting one of said first and second batteries and for connecting it in series with said additional circuit and with said relay coil so as to close said associated normally open relay contact and provide power to said starter, the improvement comprising an auxiliary starting circuit provided on said engine including first and second switches, said first switch comprising a two-pole switch with one pole being arranged to be selectively connected to one of said first and second batteries and with the other pole being arranged to be selectively connected with the relay coils associated with said batteries, said second sWitch comprising a two-pole switch with one of said poles selectively connecting one of said relay coils with one of said batteries and with the other of said poles connecting to said selected battery the additional circuit connected to the equipment necessary for operation of the engine whereby said engine can be started by closing both poles of said second switch.
Claim 2
Dependent Claim
257 words
In a starting circuit for an engine having a starter and first and second batteries which are arranged to be selectively connected in series with said starter, each of said first and second batteries having a separate circuit to said starter including a normally open relay contact, secondary circuits for each of said first and second batteries including a relay coil for closing the relay contact connected to the associated battery, an additional circuit connected to electrical equipment necessary for operation of the engine, primary switch means located at a point remote from said engine for selecting one of said first and second batteries and for connecting it in series with said additional circuit and with said relay coil so as to close said associated normally open relay contact and provide power to said starter, the improvement comprising an auxiliary starting circuit provided on said engine including first and second switches, said first switch comprising a two-pole switch with one pole being arranged to be selectively connected to one of said first and second batteries and with the other pole being arranged to be selectively connected with the relay coils associated with said batteries, said second sWitch comprising a two-pole switch with one of said poles selectively connecting one of said relay coils with one of said batteries and with the other of said poles connecting to said selected battery the additional circuit connected to the equipment necessary for operation of the engine whereby said engine can be started by closing both poles of said second switch.
Claim 3
Dependent Claim
257 words
In a starting circuit for an engine having a starter and first and second batteries which are arranged to be selectively connected in series with said starter, each of said first and second batteries having a separate circuit to said starter including a normally open relay contact, secondary circuits for each of said first and second batteries including a relay coil for closing the relay contact connected to the associated battery, an additional circuit connected to electrical equipment necessary for operation of the engine, primary switch means located at a point remote from said engine for selecting one of said first and second batteries and for connecting it in series with said additional circuit and with said relay coil so as to close said associated normally open relay contact and provide power to said starter, the improvement comprising an auxiliary starting circuit provided on said engine including first and second switches, said first switch comprising a two-pole switch with one pole being arranged to be selectively connected to one of said first and second batteries and with the other pole being arranged to be selectively connected with the relay coils associated with said batteries, said second sWitch comprising a two-pole switch with one of said poles selectively connecting one of said relay coils with one of said batteries and with the other of said poles connecting to said selected battery the additional circuit connected to the equipment necessary for operation of the engine whereby said engine can be started by closing both poles of said second switch.
Claim 4
Dependent Claim
257 words
In a starting circuit for an engine having a starter and first and second batteries which are arranged to be selectively connected in series with said starter, each of said first and second batteries having a separate circuit to said starter including a normally open relay contact, secondary circuits for each of said first and second batteries including a relay coil for closing the relay contact connected to the associated battery, an additional circuit connected to electrical equipment necessary for operation of the engine, primary switch means located at a point remote from said engine for selecting one of said first and second batteries and for connecting it in series with said additional circuit and with said relay coil so as to close said associated normally open relay contact and provide power to said starter, the improvement comprising an auxiliary starting circuit provided on said engine including first and second switches, said first switch comprising a two-pole switch with one pole being arranged to be selectively connected to one of said first and second batteries and with the other pole being arranged to be selectively connected with the relay coils associated with said batteries, said second sWitch comprising a two-pole switch with one of said poles selectively connecting one of said relay coils with one of said batteries and with the other of said poles connecting to said selected battery the additional circuit connected to the equipment necessary for operation of the engine whereby said engine can be started by closing both poles of said second switch.
Claim 5
Dependent Claim
87 words
In a starting circuit for an engine as set forth in claim 1 wherein said other pole of said second switch is connected to said one pole thereof and to said additional circuit connected to the equipment necessary for operation of the engine and with said one pole of said second switch being connected with said other pole of said first switch which selectively connects said battery relay coils, and a connection between said pole of said first switch and said other pole of said second switch.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |