Safety gear change apparatus for snow clearing vehicles

Details Safety gear change apparatus for snow clearing vehicles Safety gear change apparatus for snow clearing vehicles

1975-12-19

1977-06-21

Gerin, Leonard H.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

180103R, B60K 4122

Patent

active

040303802

ABSTRACT:
A safety gear transmission having a plurality of forward gears and a single reverse gear is provided with preselection control means for operation of the reverse gear by means of which the reverse gear is automatically actuated in response to a given stimulus for a sufficient time to assure that the vehicle, or at least the snow clearing unit moves free of the obstacle. The control means may operate either on sensing the presence of a dangerous obstacle itself, or on the changing directional state of the snow unit occurring as a result of the vehicle driving into such an obstacle, or in response to the manual operation of a manual control member.

REFERENCES:
patent: 3719096 (1973-03-01), Sprague et al.
patent: 3808738 (1974-05-01), Siebers et al.
patent: 3885472 (1975-05-01), Wakamatsu et al.

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