Cives Corporation

Gerald N Simpson

Amiya Kumar Mishra

William John Reeves

Leo P Manion

A steering mechanism for steering at least two wheels in a parallel manner throughout their arcs of rotation by removing Ackerman and other steering geometries so that the wheels may remain parallel. The steering mechanism includes a central linkage for modifying the arcs of rotation of the wheels. The steering mechanism is controlled by an actuator system that also operates a restriction device to ensure safe operation. The steering mechanism and the actuator system may be included in vehicles such as a bi-directional towed snowplow.

Bi-directional towed snowplow and method of plowing

A finger plow includes an extension which may be extended or retracted to enable the finger plow to discharge snow and ice away from the wheels of the vehicle and to make a relatively wider snow cleared path while not unduly extending beyond the sidewalls of the wheels of the vehicle when not engaged in a plowing operation. The finger plow may be a one-way or reversible snow plow with one or two extensions. In the later case, the finger plow and one or more extension finger plows are rotatable relative to the chassis of the vehicle. Shear pins or a resilient mechanism may be provided to permit the finger plow to pivot rearwardly in the event that the finger plow extension encounters an obstacle.

Finger snow plow with extension

A snow plow includes a primary moldboard and auxiliary plow positioned behind the primary moldboard. The snow plow may be a one-way or reversible snow plow. In the later case, the primary moldboard and auxiliary plow are attached to a drive frame that is rotatable about a frame. The frame is secured to the front of a vehicle by a frame and bracket, and controlled by hydraulic mechanisms. The auxiliary plow is operated independently of the moldboard by a pair of hydraulic cylinders and includes tines or a resilient blade for clearing snow and ice that is not taken up by the primary moldboard. The device also includes a mechanism whereby the scraping edge of the secondary plow follows the same path as the scraping edge of moldboard by sliding movement of the secondary plow relative to the drive frame, and the blade of the auxiliary plow may be formed by tines or a resilient blade.

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Gowanstown, Canada

Gerald N Simpson