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US3529678A - Mounting for bulldozer blades - Google Patents

Mounting for bulldozer blades Download PDF

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Publication number
US3529678A
US3529678A US752716A US3529678DA US3529678A US 3529678 A US3529678 A US 3529678A US 752716 A US752716 A US 752716A US 3529678D A US3529678D A US 3529678DA US 3529678 A US3529678 A US 3529678A
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United States
Prior art keywords
blade
mounting
plate member
vehicle
plate
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Expired - Lifetime
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US752716A
Inventor
Max J Teasdale
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Caterpillar Inc
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Caterpillar Tractor Co
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Publication date
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7609—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers
    • E02F3/7613—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers with the scraper blade adjustable relative to the pivoting arms about a vertical axis, e.g. angle dozers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7609—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers
    • E02F3/7618—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers with the scraper blade adjustable relative to the pivoting arms about a horizontal axis

Definitions

  • a mounting for supporting a bulldozer blade on a tractor including motors for raising and lowering, tilting, angling and varying pitch of the blade.
  • a pair of support plates are pivoted to each other for relative rotation about a common axis, one of the plates being pivoted to a frame mounted on the vehicle with the blade being pivoted to the other plate with the three pivot axes each being perpendicular to the other two.
  • a bulldozer blade mounting In many applications, it is desirable for a bulldozer blade mounting to permit the blade to be raised and lowered, tilted, pitched and angled for performing various earthmoving jobs.
  • the mounting must stably support the blade while permitting it to move in the above manner. Tilting of the blade raises a particular problem.
  • Most prior art designs for example, cause substantial bending or torsional stresses in the mounting or in the blade itself when the blade is tilted out of a normal position. It is therefore desirable to provide means by which the blade can be tilted without causing substantial stresses in the mounting or in the blades.
  • the present invention provides such a mounting including means for tilting, angling and varying pitch of the blade.
  • a pair of support plates are pivoted to each other with one of the plates being pivoted to a frame mounted on the vehicle and the blade being pivoted to the other plate to permit desired movement of the blade while minimizing stresses developed in the mounting and in the blade.
  • FIG. 1 is a plan view of a bulldozer blade supported on the forward end of the vehicle by means of the present mounting;
  • FIG. 2 is a side elevation view, with parts in section, taken along section line II-II of FIG. 1;
  • FIG. 3 is a perspective view of the mounting and bulldozer blade removed from the vehicle for greater clarity.
  • a bulldozer blade 11 is supported by means of a mounting '12 upon the forward end of a vehicle 13 having ground engaging means 14.
  • the vehicle may be a crawler type tractor as illustrated in FIG. 1 with the ground engaging means 14 being tracks.
  • the mounting 12 comprises a generally conventional C-frame 16 supported upon the 3,529,678 Patented Sept. 22, 1970 Y ice vehicle by means of pivots 17 which are located inside the tracks 14 to reduce the overall dimensions of the tractor and blade attachment.
  • the blade -11 is preferably of a U-shaped configuration having forwardly projecting end portions 18 and 19. The blade configuration is selected so that reduced angling of the blade permits effective side casting of material from either ends of the blade.
  • the blade design also permits increased retention of material in front of the blade, for example during cleanup operations.
  • the mounting 12 permits angling, tilting and pitching of the blade without causing substantial stresses in the blade or mounting through the use of a pair of plate members 21 and 22.
  • the plates 21 and 22 are secured to gether by means of a pivot pin 23 which is held in place by means of a cap 24 and is arranged along a longitudinal axis of the vehicle 13.
  • Brackets 26 extend rearwardly from each side of the plate 21 and are secured to the frame 16 by pivot joints 27 (see FIG. 2).
  • the pivot joints 27 are arranged along a generally horizontal transverse axis relative to the vehicle 13.
  • Another pair of brackets 28 extend forwardly from the plate 22 and are pivoted at 29 to the blade 11 along a generally vertical axis.
  • pivotal interaction between the plate 21 and the C-frame 16 permits the blade pitch to be varied.
  • Interaction of the plates 21 and 22 about the pivot pin 23 permits the blade to be tilted.
  • pivotal interaction of the blade with respect to the plate 22 about the pivot axis 29 permits the blade to be angled, for example, between its position shown at 11 and a position illustrated in broken lines at 11'. The blade may accordingly be moved to any desired position without substantially increasing stresses in either the blade 11 or the mounting 12.
  • a pair of hydraulic motors or cylinders 31 are pivotally interconnected between the sides of the vehicle 13 by means of pivot joints 32 and the C-frame by means of pivot joints 33. Extension of the cylinders 31 tends to lower the blade relative to the vehicle while retraction of the cylinder tends to raise the blade.
  • a pair of hydraulic cylinders 34 are arranged between the vehicle and the plate member 21 to selectively vary pitch of the blade 11.
  • the cylinders 34 are affixed to the vehicle by means of pivot joints 36 while their rod ends 37 are secured by pivot joints 38 to brackets 39 which extend rearwardly from the plate member 21.
  • the pitch jacks 34 as represented by the one rod 37 and the C-frame 16 generally form two sides of a parallelogram support for the blade so that blade pitch remains substantially constant while the blade is being raised and lowered by means of the jacks 31.
  • the titlting motor or hydraulic cylinder 42 has its rod 43 pivotally secured to a bracket 44 which extends rearwardly from the plate member 22 through an enlarged opening in the other plate member 21.
  • the opening 46 is sulficiently large so that the bracket 44 does not interfere with the plate member 21 during relative tilting of the blade 11 and plate member 22.
  • the other end of the tilt cylinder 42 is pivotally secured at 47 to a bracket 48 mounted on the plate member 21.
  • the plate member 22 is rotated relative to the plate member 21 about the pivot pin 23 (see FIG. 2).
  • a plurality of lugs 51 project rearwardly from the plate member 22 through arcuate slots 52 formed in the other plate member 21.
  • the lugs 51 and slots 52 are arranged circumferentially about the pivot pin 23 to permit relative rotation of the plate members 21 and 22 during titlting of the blade 11 while providing structural reinforcement between the plate members 21 and 22.
  • the hydraulic cylinder 41 for controlling blade angling is pivotally connected at 53 to a bracket 54 which projects rearwardly from the blade 11 through an enlarged opening 56 in both of the plate members 21 and 22.
  • the opening 56 is sufficiently large so that the bracket 54 does not interfere with either of the plate members as the blade is being angled by means of the hydraulic cylinder 41.
  • the rod 57 of the angling cylinder 41 is pivotally secured to a bracket 58 which extends rearwardly from the plate member 22 through an enlarged opening 59 in the plate member 21.
  • the opening 59 is sufiiciently large so that the bracket 58 does not interfere with the plate member 21 during relative rotation of the plate members by means of the tilting cylinder 42.
  • a mounting assembly for supporting a bulldozer blade upon a vehicle comprising:
  • one plate member secured to the frame member by means of a pivot connection having a transverse and horizontal axis, a member being pivotally interconnected between the one plate member and the vehicle to establish pitch of the one plate member,
  • a linear motor for tilting the other plate member and blade, the titl motor being interconnected between the plate members and arranged in parallel relation thereto, and
  • a linear motor for angling the blade being interconnected between the other plate member and a bracket extending rearwardly from the blade, the angling motor being arranged in generally paralle relation with the other plate member,
  • the frame member and pitch controlling member forming opposite sides of a parallelogram as viewed from a side of the vehicle and mounting to maintain substantially constant pitch in the blade as it is raised and lowered relative to the vehicle with the blade positioned for generally vertical pitch.
  • a mounting assembly for supporting a bulldozer blade upon a vehicle comprising:
  • one plate member secured to the frame member by means of a pivot connection having a transverse and horizontal axis, a member being pivotally interconnected between the one plate member and the vehicle to establish pitch of the one plate member,
  • a linear motor for tilting the other plate member and blade the tilt motor being interconnected between the two plate members and arranged in parallel relation thereto, and
  • a linear motor for angling the blade being interconnected between the other plate member and a bracket extending rearwardly from the blade, the angling motor being arranged in generally parallel relation with the other plate member,
  • the angling motor being mounted parallel to and behind the one plate member by means of one bracket extending rearwardly from the blade through enlarged openings defined by both plate members and another bracket extending rearwardly from the other plate member through an enlraged opening in the one plate member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Description

Sept. 22, 1970 M. J. TEASDALE MOUNTING FOR BULLDOZER BLADES Filed Aug. 14. 1968 2 Sheets-Sheet 2 INVENTORS MAX. J. TEASDALE 32 L 7 9%? .ATZORNEYS United States Patent 3,529,678 MOUNTING FOR BULLDOZER BLADES Max J. Teasdale, Joliet, lll., assignor to Caterpillar Tractor Co., Peoria, Ill., a corporation of California Filed Aug. 14, 1968, Set. N 0. 752,716 Int. Cl. E0215 3/76 11.5. Cl. 172-804 3 Claims ABSTRACT OF THE DISCLOSURE A mounting for supporting a bulldozer blade on a tractor including motors for raising and lowering, tilting, angling and varying pitch of the blade. A pair of support plates are pivoted to each other for relative rotation about a common axis, one of the plates being pivoted to a frame mounted on the vehicle with the blade being pivoted to the other plate with the three pivot axes each being perpendicular to the other two.
In many applications, it is desirable for a bulldozer blade mounting to permit the blade to be raised and lowered, tilted, pitched and angled for performing various earthmoving jobs. The mounting must stably support the blade while permitting it to move in the above manner. Tilting of the blade raises a particular problem. Most prior art designs, for example, cause substantial bending or torsional stresses in the mounting or in the blade itself when the blade is tilted out of a normal position. It is therefore desirable to provide means by which the blade can be tilted without causing substantial stresses in the mounting or in the blades.
It is also desirable to minimize the overall dimension of a vehicle or tractor having a bulldozer blade mounted on one end. Additionally, it is desirable that the blade mounting permit the blade to be raised and lowered without substantially varying the blade pitch.
The present invention provides such a mounting including means for tilting, angling and varying pitch of the blade. A pair of support plates are pivoted to each other with one of the plates being pivoted to a frame mounted on the vehicle and the blade being pivoted to the other plate to permit desired movement of the blade while minimizing stresses developed in the mounting and in the blade.
It is accordingly an object of the present invention to provide a bulldozer blade mounting for minimizing overall dimension of a vehicle supporting a bulldozer blade. It is another object to provide a bulldozer blade mounting which permits the blade to be tilted while minimizing stresses in the mounting and in the blade.
It is also an object to provide a bulldozer blade mounting which maintains generally constant blade pitch while the blade is being raised and lowered.
Additional objects and advantages of the invention are made apparent in the following description having reference to the accompanying drawings.
In the drawings:
FIG. 1 is a plan view of a bulldozer blade supported on the forward end of the vehicle by means of the present mounting;
FIG. 2 is a side elevation view, with parts in section, taken along section line II-II of FIG. 1; and
FIG. 3 is a perspective view of the mounting and bulldozer blade removed from the vehicle for greater clarity.
Referring to FIG. 1, a bulldozer blade 11 is supported by means of a mounting '12 upon the forward end of a vehicle 13 having ground engaging means 14. The vehicle may be a crawler type tractor as illustrated in FIG. 1 with the ground engaging means 14 being tracks. Referring also to FIGS. 2 and 3, the mounting 12 comprises a generally conventional C-frame 16 supported upon the 3,529,678 Patented Sept. 22, 1970 Y ice vehicle by means of pivots 17 which are located inside the tracks 14 to reduce the overall dimensions of the tractor and blade attachment. The blade -11 is preferably of a U-shaped configuration having forwardly projecting end portions 18 and 19. The blade configuration is selected so that reduced angling of the blade permits effective side casting of material from either ends of the blade. The blade design also permits increased retention of material in front of the blade, for example during cleanup operations.
The mounting 12 permits angling, tilting and pitching of the blade without causing substantial stresses in the blade or mounting through the use of a pair of plate members 21 and 22. The plates 21 and 22 are secured to gether by means of a pivot pin 23 which is held in place by means of a cap 24 and is arranged along a longitudinal axis of the vehicle 13. Brackets 26 extend rearwardly from each side of the plate 21 and are secured to the frame 16 by pivot joints 27 (see FIG. 2). The pivot joints 27 are arranged along a generally horizontal transverse axis relative to the vehicle 13. Another pair of brackets 28 extend forwardly from the plate 22 and are pivoted at 29 to the blade 11 along a generally vertical axis. In this manner, pivotal interaction between the plate 21 and the C-frame 16 permits the blade pitch to be varied. Interaction of the plates 21 and 22 about the pivot pin 23 permits the blade to be tilted. Also, pivotal interaction of the blade with respect to the plate 22 about the pivot axis 29 permits the blade to be angled, for example, between its position shown at 11 and a position illustrated in broken lines at 11'. The blade may accordingly be moved to any desired position without substantially increasing stresses in either the blade 11 or the mounting 12.
To selectively raise and lower the blade 11 along with the mounting 12, a pair of hydraulic motors or cylinders 31 are pivotally interconnected between the sides of the vehicle 13 by means of pivot joints 32 and the C-frame by means of pivot joints 33. Extension of the cylinders 31 tends to lower the blade relative to the vehicle while retraction of the cylinder tends to raise the blade.
A pair of hydraulic cylinders 34 are arranged between the vehicle and the plate member 21 to selectively vary pitch of the blade 11. The cylinders 34 are affixed to the vehicle by means of pivot joints 36 while their rod ends 37 are secured by pivot joints 38 to brackets 39 which extend rearwardly from the plate member 21. Referring particularly to FIG. 2, the pitch jacks 34, as represented by the one rod 37 and the C-frame 16 generally form two sides of a parallelogram support for the blade so that blade pitch remains substantially constant while the blade is being raised and lowered by means of the jacks 31.
Use of the parallel plates 21 and 22 permits the arrangement of angling and pitching motor means 41 and 42, respectively, so that they are protected by means of the plates from engagement with dirt or rocks. Further the arrangement of these two motors facilitates minimized overall lengths for the vehicle and blade attachments. The titlting motor or hydraulic cylinder 42 has its rod 43 pivotally secured to a bracket 44 which extends rearwardly from the plate member 22 through an enlarged opening in the other plate member 21. The opening 46 is sulficiently large so that the bracket 44 does not interfere with the plate member 21 during relative tilting of the blade 11 and plate member 22. The other end of the tilt cylinder 42 is pivotally secured at 47 to a bracket 48 mounted on the plate member 21. During tilting of the blade 11, the plate member 22 is rotated relative to the plate member 21 about the pivot pin 23 (see FIG. 2). To further stabilize the mounting while still permitting relative rotation of the plate members 21 and 22, a plurality of lugs 51 project rearwardly from the plate member 22 through arcuate slots 52 formed in the other plate member 21.
The lugs 51 and slots 52 are arranged circumferentially about the pivot pin 23 to permit relative rotation of the plate members 21 and 22 during titlting of the blade 11 while providing structural reinforcement between the plate members 21 and 22.
The hydraulic cylinder 41 for controlling blade angling is pivotally connected at 53 to a bracket 54 which projects rearwardly from the blade 11 through an enlarged opening 56 in both of the plate members 21 and 22. The opening 56 is sufficiently large so that the bracket 54 does not interfere with either of the plate members as the blade is being angled by means of the hydraulic cylinder 41. The rod 57 of the angling cylinder 41 is pivotally secured to a bracket 58 which extends rearwardly from the plate member 22 through an enlarged opening 59 in the plate member 21. The opening 59 is sufiiciently large so that the bracket 58 does not interfere with the plate member 21 during relative rotation of the plate members by means of the tilting cylinder 42.
What is claimed is:
1. A mounting assembly for supporting a bulldozer blade upon a vehicle, comprising:
a frame member pivotally supported on one end of the vehicle,
one plate member secured to the frame member by means of a pivot connection having a transverse and horizontal axis, a member being pivotally interconnected between the one plate member and the vehicle to establish pitch of the one plate member,
another plate member pivotally mounted on the one plate member for permitting coplanar pivotal motion between the plate members about a tilt axis lying in generally longitudinal relation with respect to the vehicle,
a generally vertical pivot connection supporting the blade upon the other plate member andforming an angling axis,
a linear motor for tilting the other plate member and blade, the titl motor being interconnected between the plate members and arranged in parallel relation thereto, and
a linear motor for angling the blade being interconnected between the other plate member and a bracket extending rearwardly from the blade, the angling motor being arranged in generally paralle relation with the other plate member,
the frame member and pitch controlling member forming opposite sides of a parallelogram as viewed from a side of the vehicle and mounting to maintain substantially constant pitch in the blade as it is raised and lowered relative to the vehicle with the blade positioned for generally vertical pitch.
2. A mounting assembly for supporting a bulldozer blade upon a vehicle, comprising:
a frame member pivotally supported on one end of the vehicle,
one plate member secured to the frame member by means of a pivot connection having a transverse and horizontal axis, a member being pivotally interconnected between the one plate member and the vehicle to establish pitch of the one plate member,
another plate member pivotally mounted on the one plate member for permitting coplanar pivotal motion between the plate members about a tilt axis lying in generally longitudinal relation with respect to the vehicle,
a generally vertical pivot connection supporting the blade upon the other plate member and forming an i angling axis,
' a linear motor for tilting the other plate member and blade, the tilt motor being interconnected between the two plate members and arranged in parallel relation thereto, and
a linear motor for angling the blade being interconnected between the other plate member and a bracket extending rearwardly from the blade, the angling motor being arranged in generally parallel relation with the other plate member,
the angling motor being mounted parallel to and behind the one plate member by means of one bracket extending rearwardly from the blade through enlarged openings defined by both plate members and another bracket extending rearwardly from the other plate member through an enlraged opening in the one plate member.
3. The invention of claim 1 wherein the member maintaining pitch of the one plate member together with the other plate member and the blade is a linear motor providing for adjustment of blade pitch.
References Cited UNITED STATES PATENTS 2,160,596 5/1939 Le Bleu 172804 2,629,946 3/1953 Ewers et al. 172-804 2,749,630 6/1956 Nave l72804 2,904,910 9/1959 Armington 172805 2,973,592 3/1961 Abel 172804 3,083,480 4/1963 Kirchler 172-803 3,084,461 4/1963 Beckford 172804 3,157,099 11/1964 Ulrich 172-804 X 3,246,406 4/1966 Ray 172-804 FOREIGN PATENTS 155,899 3/1954 Australia. 1 12,104 9/ 1964 Czechoslovakia.
ROBERT E. BAGW'ILL, Primary Examiner A. E. KOPECKI, Assistant Examiner U.S., Cl. XJR. 172484, 739, 809
US752716A 1968-08-14 1968-08-14 Mounting for bulldozer blades Expired - Lifetime US3529678A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631931A (en) * 1969-12-12 1972-01-04 Case Co J I Bulldozer
US3648782A (en) * 1969-11-19 1972-03-14 Gen Motors Corp Multipurpose bulldozer assembly
US3661215A (en) * 1969-02-04 1972-05-09 Massey Ferguson Services Nv Tilting dozer blade
US3822751A (en) * 1973-06-12 1974-07-09 Valley Engineering Mounting assembly for attaching a material treating blade to a vehicle
FR2318281A1 (en) * 1975-07-18 1977-02-11 Komatsu Mfg Co Ltd MOUNTING DEVICE FOR SUPPORTING THE BLADE OF A BULLDOZER
US4083414A (en) * 1975-12-30 1978-04-11 Kabushiki Kaisha Komatsu Seisakusho Combination angling-tilting bulldozer
WO1980001584A1 (en) * 1979-01-29 1980-08-07 Caterpillar Tractor Co Angle and tilt implement assembly
US4248311A (en) * 1979-04-02 1981-02-03 J. I. Case Company Side shift blade arrangement
US4249323A (en) * 1978-06-19 1981-02-10 De Lorean Manufacturing Company Variable wing plow blade and mounting structure therefor
US4270617A (en) * 1978-07-10 1981-06-02 Fiat-Allis Macchine Movimento Terra S.P.A. Earth moving machine of the scraping blade type
US4337837A (en) * 1978-10-12 1982-07-06 J. I. Case Company Mounting mechanism for angle dozer blade
USRE31642E (en) * 1979-01-29 1984-08-07 Caterpillar Tractor Co. Angle and tilt implement assembly
US4562891A (en) * 1982-07-30 1986-01-07 Bomadier-Rotax-Wien Produktions- und Vertriebsgesellschaft mbH Front vehicle blade mount
US4638869A (en) * 1986-04-14 1987-01-27 Caterpillar Inc. Bulldozer blade mounting and stabilizing arrangement
US4828044A (en) * 1987-08-07 1989-05-09 J. I. Case Company Dozer blade mounting assembly
US4848483A (en) * 1987-04-13 1989-07-18 Rockland, Inc. Tool attachment means for tractors
AT392499B (en) * 1988-11-15 1991-04-10 Liezen Maschf DEVICE FOR CONNECTING A VEHICLE TO A MACHINING DEVICE
US5010961A (en) * 1990-02-20 1991-04-30 J. I. Case Company Angle-tilt-pitch mechanism for dozer blade
US5058685A (en) * 1990-07-17 1991-10-22 J. I. Case Company Dozer blade mounting apparatus
US8418777B1 (en) * 2011-12-09 2013-04-16 GK Machine, Inc. Agricultural folding scraper blade
US20150308060A1 (en) * 2014-04-28 2015-10-29 Robert L. Beaird, Iii Snowplow apparatus for a motor vehicle
US20200299926A1 (en) * 2019-03-19 2020-09-24 Clark Equipment Company Excavator blade cylinder
WO2024152118A1 (en) * 2023-01-20 2024-07-25 Bilodeau Martin Nicolas Benoit Differential dozer blade lift and angle mechanism

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160596A (en) * 1935-07-06 1939-05-30 Bleu Charles Le Trail builder, bulldozer, and the like
US2629946A (en) * 1947-06-06 1953-03-03 Mitchell H Ewers Grading or dozing device
US2749630A (en) * 1951-04-19 1956-06-12 Sherlock E Nave Bulldozer blade
US2904910A (en) * 1954-05-24 1959-09-22 Gen Motors Corp Angle bulldozer for four-wheel steer tractor
US2973592A (en) * 1957-07-25 1961-03-07 Allied Tractor Equipment Compa Bulldozer
US3083480A (en) * 1960-10-28 1963-04-02 Int Harvester Co Tilt and pitch dozer construction
US3084461A (en) * 1960-11-23 1963-04-09 Eimco Corp Material handling machine
US3157099A (en) * 1960-09-06 1964-11-17 Ulrich Mfg Co Earth materials handling apparatus
US3246406A (en) * 1963-06-27 1966-04-19 M R S Mfg Company Bulldozer having a universal blade mounting

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160596A (en) * 1935-07-06 1939-05-30 Bleu Charles Le Trail builder, bulldozer, and the like
US2629946A (en) * 1947-06-06 1953-03-03 Mitchell H Ewers Grading or dozing device
US2749630A (en) * 1951-04-19 1956-06-12 Sherlock E Nave Bulldozer blade
US2904910A (en) * 1954-05-24 1959-09-22 Gen Motors Corp Angle bulldozer for four-wheel steer tractor
US2973592A (en) * 1957-07-25 1961-03-07 Allied Tractor Equipment Compa Bulldozer
US3157099A (en) * 1960-09-06 1964-11-17 Ulrich Mfg Co Earth materials handling apparatus
US3083480A (en) * 1960-10-28 1963-04-02 Int Harvester Co Tilt and pitch dozer construction
US3084461A (en) * 1960-11-23 1963-04-09 Eimco Corp Material handling machine
US3246406A (en) * 1963-06-27 1966-04-19 M R S Mfg Company Bulldozer having a universal blade mounting

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661215A (en) * 1969-02-04 1972-05-09 Massey Ferguson Services Nv Tilting dozer blade
US3648782A (en) * 1969-11-19 1972-03-14 Gen Motors Corp Multipurpose bulldozer assembly
US3631931A (en) * 1969-12-12 1972-01-04 Case Co J I Bulldozer
US3822751A (en) * 1973-06-12 1974-07-09 Valley Engineering Mounting assembly for attaching a material treating blade to a vehicle
FR2318281A1 (en) * 1975-07-18 1977-02-11 Komatsu Mfg Co Ltd MOUNTING DEVICE FOR SUPPORTING THE BLADE OF A BULLDOZER
US4083414A (en) * 1975-12-30 1978-04-11 Kabushiki Kaisha Komatsu Seisakusho Combination angling-tilting bulldozer
US4249323A (en) * 1978-06-19 1981-02-10 De Lorean Manufacturing Company Variable wing plow blade and mounting structure therefor
US4270617A (en) * 1978-07-10 1981-06-02 Fiat-Allis Macchine Movimento Terra S.P.A. Earth moving machine of the scraping blade type
US4337837A (en) * 1978-10-12 1982-07-06 J. I. Case Company Mounting mechanism for angle dozer blade
USRE31642E (en) * 1979-01-29 1984-08-07 Caterpillar Tractor Co. Angle and tilt implement assembly
US4221267A (en) * 1979-01-29 1980-09-09 Caterpillar Tractor Co. Angle and tilt implement assembly
WO1980001584A1 (en) * 1979-01-29 1980-08-07 Caterpillar Tractor Co Angle and tilt implement assembly
US4248311A (en) * 1979-04-02 1981-02-03 J. I. Case Company Side shift blade arrangement
US4562891A (en) * 1982-07-30 1986-01-07 Bomadier-Rotax-Wien Produktions- und Vertriebsgesellschaft mbH Front vehicle blade mount
US4638869A (en) * 1986-04-14 1987-01-27 Caterpillar Inc. Bulldozer blade mounting and stabilizing arrangement
WO1987006288A1 (en) * 1986-04-14 1987-10-22 Caterpillar Inc. Bulldozer blade mounting and stabilizing arrangement
US4848483A (en) * 1987-04-13 1989-07-18 Rockland, Inc. Tool attachment means for tractors
US4828044A (en) * 1987-08-07 1989-05-09 J. I. Case Company Dozer blade mounting assembly
AT392499B (en) * 1988-11-15 1991-04-10 Liezen Maschf DEVICE FOR CONNECTING A VEHICLE TO A MACHINING DEVICE
US5010961A (en) * 1990-02-20 1991-04-30 J. I. Case Company Angle-tilt-pitch mechanism for dozer blade
US5058685A (en) * 1990-07-17 1991-10-22 J. I. Case Company Dozer blade mounting apparatus
US8418777B1 (en) * 2011-12-09 2013-04-16 GK Machine, Inc. Agricultural folding scraper blade
US20150308060A1 (en) * 2014-04-28 2015-10-29 Robert L. Beaird, Iii Snowplow apparatus for a motor vehicle
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