(under subclass 781) Apparatus in which the scraper is attached to the forward end of a generally longitudinally extending frame which is attached to the vehicle frame at a location in back of the scraper so as to push the scraper when it is performing its earth working function.
(1) Note. The longitudinally extending frame under this definition must be one which transmits the principal
propelling force (at least 50%) from the vehicle to the scraper rather than a mere stabilizing strut or adjusting link. Whether or not a frame meets this criterium is usually a decision made after a consideration of the total disclosure to determine the stress distribution inherently present in the apparatus.
(2) Note. The frame may be nothing more than a single strut.
(3) Note. The phrase "generally longitudinally extending" means that when the scraper is in working position the frame extends more in a longitudinal direction than in a vertical direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
308, for an earth working element other than a scraper between the front and rear of a motor vehicle and attached to a push bar.
