US3948202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilation control apparatus for an engine room of a ship
Assignee: Yamaha Motor Co Ltd
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Filing: 1974-10-29
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Granted: 1976-04-06
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Expires: 1994-10-29
Abstract
Abstract A ventilation control apparatus includes a timer and a switch for operating the timer. When the timer is operated an engine room is ventilated and after a preset time, as timed by the timer the engine is automatically started.
Inventors
- 👤 Norihiko Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:58
CPC Classifications
B; B63; B63J; B63J2/00; B63J2/02; B63J2/06; F; F02; F02N; F02N15/00; F02N15/10; F02P; F02P11/00; F02P11/04; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
277 words
A ventilation control apparatus for an engine room of a ship which contains a gasoline engine of a spark ignition type, comprising: a source of electrical power (V, I1, I2); a ventilating device opened at one end to the engine room and at the other end to the atmosphere for ventilating the engine room; a device (SM) coupled to the engine for starting the engine; a main switch (MSW) coupled to the power source for starting the engine; a timer (TR) coupled to the main switch (MSW) and to the timer switch (TRS) and responsive to the operation of the main switch (MSW) and to cause the timer switch (TRS) to be, for a predetermined period of time, in a first state (A) where the engine starting device (SM) is not energized and the ventilating device is energized and operated, and after the lapse of the predetermined period of time to cause the timer switch (TRS) to be in a second state (B) where the engine starting device (SM) is energized through the main switch (MSW) when the main switch (MSW) is operated to an engine starting position; and a gas detector (GD) coupled to said ventilating device and to the power source so as to be operable at all times that the power source is energized, and in communication with the engine room for detecting the amount of combustible gas in the engine room, said gas detector being responsive to the amount of combustible gas in the engine room reaching a predetermined level for energizing and operating only the ventilating device independently of the state of the timer (TR), without affecting the operation of the engine.
Claim 2
Dependent Claim
277 words
A ventilation control apparatus for an engine room of a ship which contains a gasoline engine of a spark ignition type, comprising: a source of electrical power (V, I1, I2); a ventilating device opened at one end to the engine room and at the other end to the atmosphere for ventilating the engine room; a device (SM) coupled to the engine for starting the engine; a main switch (MSW) coupled to the power source for starting the engine; a timer (TR) coupled to the main switch (MSW) and to the timer switch (TRS) and responsive to the operation of the main switch (MSW) and to cause the timer switch (TRS) to be, for a predetermined period of time, in a first state (A) where the engine starting device (SM) is not energized and the ventilating device is energized and operated, and after the lapse of the predetermined period of time to cause the timer switch (TRS) to be in a second state (B) where the engine starting device (SM) is energized through the main switch (MSW) when the main switch (MSW) is operated to an engine starting position; and a gas detector (GD) coupled to said ventilating device and to the power source so as to be operable at all times that the power source is energized, and in communication with the engine room for detecting the amount of combustible gas in the engine room, said gas detector being responsive to the amount of combustible gas in the engine room reaching a predetermined level for energizing and operating only the ventilating device independently of the state of the timer (TR), without affecting the operation of the engine.
Claim 3
Dependent Claim
29 words
A ventilation control apparatus according to claim 1, in which said timer (TR) stops the energization of said ventilating device after the lapse of the predetermined length of time.
Claim 4
Dependent Claim
26 words
A ventilation control apparatus according to claim 2 in which said ventilating device is de-energized when said timer switch (TRS) is in the second state (B).
Claim 5
Dependent Claim
21 words
A ventilation control apparatus according to claim 1, in which said ventilating device introduces outer atmospheric air into the engine room.
Claim 6
Dependent Claim
69 words
A ventilation control apparatus according to claim 1, in which said ventilating device comprises an air passage communicating the engine room to the atmosphere, an electrically driven fan (F) operatively coupled to said timer switch (TRS) and disposed in the air passage near the atmosphere, and a shutter device disposed in the air passage near the engine room to shut the air passage during the stopping of the fan.
Claim 7
Dependent Claim
46 words
A ventilation control apparatus according to claim 1 in which said main switch (MSW) has an OFF position, ON position and a ST (start) position, said timer switch being operated for said predetermined period of time when said main switch is operated to the ON position.
Claim 8
Dependent Claim
36 words
A ventilation control apparatus to claim 1 in which a by-pass means (BSW) is coupled to said main witch (MSW) to enable the engine to be started irrespective of the state of the timer switch (TR).
Claim 9
Dependent Claim
36 words
A ventilation control apparatus to claim 7 in which said engine starting device comprises a starting motor and an ignition coil for the engine, the by-pass means coupling th ignition coil directly to the main 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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |