Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1989-05-26
1991-04-02
Kamen, Noah P.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
251 58, 251203, 251326, F02B 7700
Patent
active
050039431
ABSTRACT:
An engine air intake shutoff apparatus includes a frame that can be attached to and supported by an engine air intake passage such as an engine blower housing over the engine air intake passage. A baffle plate having rollers extending above its surface slidably moves along the side panels of the frame. Rotatable, retractable baffle arms direct the movement of the baffle plate within the housing. The baffle plate has a mitered leading edge that mates with a wedge on the interior of the frame opposite the leading edge of the baffle plate. Baffle arms are secured to rotatable operating shafts at a point above the attachment point of the baffle plate to the baffle arm so that downward force is exerted on the end of the baffle plate. The combination of the mating of the leading edge of the baffle plate and the wedge and the downward and forward force exerted by the baffle arms create an airtight seal between the baffle plate and the frame when the baffle plate is in the closed position. The engine air intake shutoff apparatus may be powered by an actuator assembly which receives a signal from a control system that can be either automatic or remote-manual. The control system may send a signal for shutting off the engine's fuel flow at a point prior to or simultaneous with a signal which causes the pneumatic actuator assembly to move the baffle plate.
REFERENCES:
patent: 2824715 (1958-02-01), Williams
patent: 3258244 (1966-06-01), Hilton
patent: 3610574 (1971-10-01), Hartman
patent: 4029289 (1977-06-01), Miffre
patent: 4129040 (1978-12-01), Hayden, Jr.
patent: 4422418 (1983-12-01), Dorn
patent: 4499733 (1985-02-01), Farr et al.
patent: 4537386 (1985-08-01), Krepela et al.
patent: 4718637 (1988-01-01), Contin
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