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US 5,669,452 AGranted
Blade plow with vertically reciprocating blades
AssigneeQuinstar Corporation
InventorsJames A. Wright, Henry F. Erikson, Glenn A. Wolf, James A. Boone
Life of this patent
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Abstract
A blade plow preferably formed by three frame sections hingedly coupled together includes a ground or terrain contour following mechanism within each frame section. The contour mechanism allows the middle blade to be raised and lowered to maintain the entire central blade horizontal relative to the plow frame and at a constant depth within the ground. Additional "fixed" blades are hydraulically setable for depth of cut. The terrain contour following mechanism allows for larger frame widths without the usual tendency of smaller width frames to buckle due to ground unevenness.
Claims8
A blade plow comprising:
- a middle frame carried by a plurality of middle support wheels, said middle frame including;
- first and second middle sweep blades vertically extending from said middle frame;
- and
- a middle centerflex mechanism coupled to said middle frame between said first and second middle sweep blades and movable independent of said middle frame and middle sweep blades, said middle centerflex mechanism including a middle ground wheel and a third middle sweep blade variably vertically setable relative to said middle centerflex mechanism to variably set penetration depths of said third middle sweep blade within the ground, said middle centerflex mechanism allowing said third sweep blade to vertically follow vertical movement of said middle ground wheel while maintaining a vertical setting of said third middle sweep blade relative to said middle centerflex such that said third middle sweep blade maintains penetration depth thereof within the ground;
- a left frame hingedly coupled to the left side of said middle frame and carried by a plurality of left support wheels, said left frame including;
- first and second left sweep blades vertically extending from said left frame;
- and
- a left centerflex mechanism coupled to said left frame between said first and second left sweep blades and movable independent of said left frame and left sweep blades, said left centerflex mechanism including a left ground wheel and a third left sweep blade variably vertically setable relative to said left centerflex mechanism to set variably penetration depths of said third left sweep blade within the ground, said left centerflex mechanism allowing said third left sweep blade to vertically follow the vertical movement of said left ground wheel while maintaining a vertical setting of said third left sweep blade relative to said left centerflex such that said third left sweep blade maintains penetration depth thereof within the ground;
- and
- a right frame hingedly coupled to the right side of said middle frame and carried by a plurality of right support wheels, said right frame including;
- first and second right sweep blades vertically extending from said right frame;
- and
- a right centerflex mechanism coupled to said right frame between said first and second right sweep blades and movable independent of said right frame and right sweep blades, said right centerflex mechanism including a right ground wheel and a third right sweep blade variable vertically setable relative to said right centerflex mechanism to variable set penetration depths of said third right sweep blade within the ground, said right centerflex mechanism allowing said third right sweep blade to vertically follow a vertical movement of said right ground wheel while maintaining the vertical setting of said third right sweep blade relative to said right centerflex such that said third right sweep blade maintains penetration depth thereof within the ground;
- said middle, left and right first and second sweep blades all concurrently vertically setable relative to each other.
11 more elements
A blade plow comprising:
- a first rigid frame section having at least a 12' width and carried on wheels;
- a second rigid frame section having at least a 12' width and carried on wheels;
- a third rigid frame section having at least a 12' width and carried on wheels;
- said first rigid frame section pivotably coupled at one side to a first side of said second rigid frame section;
- said third rigid frame section pivotably coupled at one side to a second side of said second rigid frame section, opposite to said first side;
- each said first, second and third rigid frame sections having a plurality of sweep blades adjustably fixable in depth relative to ground and a contour following mechanism disposed in a middle portion thereof, said contour following mechanism adjustably fixable in depth relative to ground independent of said plurality of sweep blades.
3 more elements
Dependencies are inferred from the claim text.