Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1982-05-10
1984-11-27
Stouffer, Richard T.
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
172 26, A01B 6904
Patent
active
044846479
ABSTRACT:
An apparatus (20) for guiding a vehicle (26) along a pre-determined path. The apparatus (20) includes a reversible electric motor (40) and mechanical linkage (42) for interconnecting the motor (40) to the steering mechanism. A carriage (22) is removably attached to the vehicle (26) or implement (24) being pulled thereby. The carriage (22) supports a trench forming apparatus and a wheel apparatus for following a precut trench. The apparatus (20) includes an actuator (32) for raising and lowering the wheel apparatus and a universal joint (31) to enable the wheel apparatus to move from side to side and vertically, whereby the wheel apparatus can remain in the precut trench should the vehicle (26) veer from the path of the precut trench. Additionally, the carriage (22) includes a first switch (38) normally activated when the wheel apparatus is in a lowered position and following a precut trench, the first switch (38) being deactivated when the wheel apparatus is in a raised position, and a second switch (48) having first and second activated states, the second switch (48) normally deactivated when the wheel apparatus is not moving sideways and activated when the wheel means is moving sideways. The guiding apparatus (20) further includes a source of electrical energy (131) and a plurality of conductors (78) electrically coupling the electrical source (131), the motor (40) and the switches (38, 48) such that the motor (40) is energized to move the steering mechanism such that the vehicle (26) does not veer from the path of the precut trench which the wheel apparatus is following.
REFERENCES:
patent: 127453 (1872-06-01), Bowen
patent: 1256632 (1918-02-01), Abbott
patent: 1486355 (1924-03-01), Murray
patent: 1601944 (1926-10-01), Davidson et al.
patent: 2842039 (1958-07-01), Swingle
patent: 3118505 (1964-01-01), Sieling
patent: 3235009 (1966-02-01), Nelson
patent: 3797602 (1974-03-01), Sumida
patent: 3844372 (1974-10-01), Neece
patent: 3998275 (1976-12-01), Eisenhardt
patent: 4180133 (1979-12-01), Collogan et al.
patent: 4184551 (1980-01-01), Orthman
"Guidance Systems do a Better Job", Farm Industry News Midwest, Jan. 1981.
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