Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1975-09-15
1977-05-10
Blix, Trygve M.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180101, 180102, 200220, B63H 1900
Patent
active
040221466
ABSTRACT:
This invention relates to a marine safety apparatus for preventing accidents in small watercraft. The device interrupts the watercraft power plant when the watercraft operator is displaced from the operator's seat. The principal aspect of the disclosure is an air bladder seat cushion connected to an air pressure actuated electrical switch. The pressure from the weight of a seated operator's body is transmitted to actuate the switch between "on" and "off", according as to whether the operator is seated or not. The switch in turn actuates or de-actuates engine operation, normally by interruption of an ignition system. An additional feature is provided to override the foregoing safety system, at low speeds. Also a pneumatic delay is disclosed whereby circuit interruption is delayed slightly after seat lift-off of the operator, to preclude engine stop due to momentary lift-offs upon encountering minor water turbulence.
REFERENCES:
patent: 1969929 (1934-08-01), Heden
patent: 2093419 (1937-09-01), Coleman
patent: 2758218 (1956-08-01), Poznik
patent: 3786892 (1974-01-01), Horton
patent: 3807343 (1974-04-01), Peebles
Blix Trygve M.
Goldstein Stuart M.
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