US3631931A - Bulldozer - Google Patents
Bulldozer Download PDFInfo
- Publication number
- US3631931A US3631931A US884509A US3631931DA US3631931A US 3631931 A US3631931 A US 3631931A US 884509 A US884509 A US 884509A US 3631931D A US3631931D A US 3631931DA US 3631931 A US3631931 A US 3631931A
- Authority
- US
- United States
- Prior art keywords
- vehicle
- frame
- jacks
- blade
- dozer blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- E02F3/7618—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
-
- 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
Definitions
- This invention relates to improvements in earth moving blade mounting and maneuvering structures adapted, although not exclusively, for use with bulldozers.
- the typical dozer blade push frame is of the C- frame type with arms extending along the side of and to the rear of the tractor where the arms are attached for pivotable movement of the frame.
- the forces imposed on the frame can be high, therefore, the frame must be rather bulky.
- somewhat complicated structures are required to maneuver the blade on the C- frame. With a frame, the blade must be longer to clear the frame when angled. This invention allows the blade to be short.
- a new and different dozer blade mounting and maneuvering arrangement is proposed that is simple in construction, that can be installed on the front of the tractor, and that can be easily and conveniently maneuvered to a plurality of positions.
- a dozer blade push support that is swingably mounted on the front of the tractor so as to raise and lower a dozer blade.
- a more specific objective is the provision of a unique arrangement whereby a dozer blade push support is swingably mounted on the front of a tractor and swivelably supports the dozer blade, which can be angled, tilted and pitched by doubleacting jacks.
- FIG. 1 is a fragmentary side elevational view of a bulldozer on which a dozer blade is mounted in accordance with the invention
- FIG. 2 is a perspective view of the dozer blade and the mounting therefor depicted in FIG. 1;
- FIG. 3 is a sectional view taken along lines 3-3 in FIG. 1 of one of the universal connections made with the dozer blade.
- the numeral denotes a crawler tractor.
- the tractor 10 has mounted on the front, an implement such as a dozer blade 12, of the usual construction.
- the mounting is made by a push frame 14 that is swingably connected to the front of the tractor 10.
- the push frame 14 is of a generally A- shaped configuration as viewed in FIG. 2 and swivelably supports the dozer blade 12 for tilting, angling, and pitching movements as will be explained.
- the swingable connection to the tractor 10 is made by a crossshaft 16 which connects the back end of the push frame 14 to the front end of the tractor 10.
- the crossshaft 16 is arranged substantially perpendicular to the longitudinal axis of the tractor 10 and has swingable or pivotable movement adequate to permit the raising and lowering of the dozer blade 12 to the desired extent.
- On the front end of the push frame 14 is formed a ball 18 which is received within the socket 20 defined by a portion of the dozer blade 12 and a mounting plate 22.
- This ballandsocket connection permits the swivelable movements of the dozer blade 12.
- In the middle of the push frame 14 are the upstanding arms 24 to which attaches an appropriate lift mechanism such as a fluid operated doubleacting lift jack 26 shown in FIG. 1.
- the upstanding arms 24 being in the middle, i.e., positioned on a line extending from the center of the ball 18 to the center of the back end of the push frame 14 avoids imposing upon the crossshaft 16 twist
- the lift jack 26 includes a cylinder 28 which is swingably connected to the upper front end of the tractor 10 by a bifurcated bracket shown at 30 lift FIG. 1.
- the lift jack 26 also includes a piston and rod assembly 32 which attaches to the arms 24 on the push frame 14. Thus, retraction and extension of the piston and rod assembly pivots the push frame 14 up and down about the axis of the crossshaft 16 and correspondingly raises and lowers the dozer blade 12.
- upper and lower struts such as doubleacting jacks 34 and 36.
- Each of these jacks may be fluid operated with the upper jack 34 being typical and including a cylinder 38 which has a universal connection at 40 with the tractor and a piston and rod assembly 42 having a universal connection at 44 with the dozer blade 12.
- These universal connections 40 and 44 may be of the ballandsocket type similar to that made by ball 18 on the end of the push frame 14 with the socket 20 defined by the blade 12 in the plate 22.
- the socket may be formed by the blade 12 and mounting plate 46.
- control system and fluid pressure source may be employed for operating the various jacks 26, 34 and 36.
- the control system would be manually operable in the usual way from the tutor operator's seat.
- the dozer blade 12 is raised and lowered by actuating the lift jack 26 so as to correspondingly raise and lower the push frame 14.
- the two upper jacks 34 both are extended.
- both of the upper jacks 34 are retracted.
- Le raise one end of the dozer blade 12 or rotate the blade 12 about the longitudinal axis of the tractor 10
- one of the upper jacks 34 is extended and the other upper jack 34 is retracted.
- both of the upper and lower jacks 34 and 36 on one side of the tractor 10 are retracted and those on the other side are extended. In this way, the dozer blade 12 is pivoted about the vertical axis of the tractor 10.
- the jacks 34 and 36 on each side of the tractor 10 are mounted so as to be parallel.
- the jacks 34 and 36 on the left side of the tractor 10 are arranged so that the axis of each cylinder 38 is in substantial parallel alignment. With this parallelism, the dozer blade 12 does not change pitch when raised and lowered by the lift jack 26.
- a considerably simplified push frame is provided to swivelly support a dozer blade 12 that can be angled, tilted or pitched or a combination of these movements, easily and conveniently.
- a dozer blade In combination with a motor, a dozer blade, an A- shaped frame having one end thereof pivotably connected to the front end of the vehicle and an opposite end thereof swivelly connected to the dozer blade, a lift jack having one end thereof connected to the upper front end of the vehicle and an opposite end thereof connected to approximately the middle of the A- frame and operative to raise and lower the A- frame and correspondingly the dozer blade, poweroperated means for selectively maneuvering the dozer blade, the poweroperated means including a pair of doubleacting fluidoperated upper and lower jacks arranged in substantially parallel relationship on each side of the vehicle, the upper and lower jacks each having universal connections at the opposite ends with the front end of the vehicle and the ends of the dozer blade, with the pivotable connection between said one end of said A- shaped frame and the vehicle being coaxial with the transverse axis through the universal connections between the vehicle and both upper jacks or both lower jacks, so that the blade is pitched forward or backward when the upper jacks on
- an implement a push frame having one end thereof pivotably connected to the front end of the vehicle for movement about an axis transverse the the longitudinal axis of the vehicle and the opposite end thereof having a ball socket connection with the implement so that the implement is swivelable relative to the frame
- the maneuvering means including a pair of substantially parallel upper and lower retractable and extensible strut members on each side of the vehicle, each strut member havhaving one end thereof connected to the upper front end of the vehicle and the opposite end thereof connected to approximately the middle part of the push frame and operative to raise and lower the frame and correspondingly the implement relative to the front end of the vehicle.
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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)
Abstract
A bulldozer having pivotally mounted on the front end an Ashaped push frame which swivelly supports a dozer blade. The angle, pitch and tilt of the blade is adjusted by upper and lower parallel jacks on each side of the bulldozer. The blade is raised and lowered by another jack that interconnects the middle of the push frame with the front of the tractor.
Description
United States Patent Inventor Claude M. Frisbee Burlington, lowa Appl. No. 884,509 Filed Dec. 12, 1969 Patented Jan. 4, 1972 Assignee J. 1. Case Company Racine, Wis.
BULLDOZER 2 Claims, 3 Drawing Figs.
11.8. CI 172/807, 172/484 Int. Cl A01b 3/76 Field of Search 172/801, 803-807, 809, 276, 484; 37/1 17.5, 41
References Cited UNITED STATES PATENTS 2,374,016 4/1945 Henneuse 172/807 Wills et al.
Blomquist Rockwell Fryer et a1. Larson Primary ExaminerRobert E. Pulfrey Assistant ExaminerStephen C. Pellegrino Attorney-Cul1en, Settle, Sloman & Cantor Teasdale 172/484 37/1 17.5 172/803 X 172/803 172/484 X 172/484 X tractor.
BULLDOZER This invention relates to improvements in earth moving blade mounting and maneuvering structures adapted, although not exclusively, for use with bulldozers.
The typical dozer blade push frame is of the C- frame type with arms extending along the side of and to the rear of the tractor where the arms are attached for pivotable movement of the frame. Necesarily, the forces imposed on the frame can be high, therefore, the frame must be rather bulky. Also, somewhat complicated structures are required to maneuver the blade on the C- frame. With a frame, the blade must be longer to clear the frame when angled. This invention allows the blade to be short.
Accordingly, a new and different dozer blade mounting and maneuvering arrangement is proposed that is simple in construction, that can be installed on the front of the tractor, and that can be easily and conveniently maneuvered to a plurality of positions.
Further contemplated is a dozer blade push support that is swingably mounted on the front of the tractor so as to raise and lower a dozer blade.
A more specific objective is the provision of a unique arrangement whereby a dozer blade push support is swingably mounted on the front of a tractor and swivelably supports the dozer blade, which can be angled, tilted and pitched by doubleacting jacks.
The foregoing and other objects and advantages of the invention will become apparent from the following description and the accompanying drawings in which:
FIG. 1 is a fragmentary side elevational view of a bulldozer on which a dozer blade is mounted in accordance with the invention;
FIG. 2 is a perspective view of the dozer blade and the mounting therefor depicted in FIG. 1;
FIG. 3 is a sectional view taken along lines 3-3 in FIG. 1 of one of the universal connections made with the dozer blade.
Referring to the details of the drawings and initially to FIG. 1, the numeral denotes a crawler tractor. The tractor 10 has mounted on the front, an implement such as a dozer blade 12, of the usual construction. The mounting is made by a push frame 14 that is swingably connected to the front of the tractor 10. The push frame 14 is of a generally A- shaped configuration as viewed in FIG. 2 and swivelably supports the dozer blade 12 for tilting, angling, and pitching movements as will be explained.
The swingable connection to the tractor 10 is made by a crossshaft 16 which connects the back end of the push frame 14 to the front end of the tractor 10. The crossshaft 16 is arranged substantially perpendicular to the longitudinal axis of the tractor 10 and has swingable or pivotable movement adequate to permit the raising and lowering of the dozer blade 12 to the desired extent. On the front end of the push frame 14 is formed a ball 18 which is received within the socket 20 defined by a portion of the dozer blade 12 and a mounting plate 22. This ballandsocket connection permits the swivelable movements of the dozer blade 12. In the middle of the push frame 14 are the upstanding arms 24 to which attaches an appropriate lift mechanism such as a fluid operated doubleacting lift jack 26 shown in FIG. 1. The upstanding arms 24 being in the middle, i.e., positioned on a line extending from the center of the ball 18 to the center of the back end of the push frame 14 avoids imposing upon the crossshaft 16 twisting forces.
The lift jack 26 includes a cylinder 28 which is swingably connected to the upper front end of the tractor 10 by a bifurcated bracket shown at 30 lift FIG. 1. The lift jack 26 also includes a piston and rod assembly 32 which attaches to the arms 24 on the push frame 14. Thus, retraction and extension of the piston and rod assembly pivots the push frame 14 up and down about the axis of the crossshaft 16 and correspondingly raises and lowers the dozer blade 12.
As viewed in FIG. 1, on each side of the tractor 10 at the front end are arranged upper and lower struts, such as doubleacting jacks 34 and 36. Each of these jacks may be fluid operated with the upper jack 34 being typical and including a cylinder 38 which has a universal connection at 40 with the tractor and a piston and rod assembly 42 having a universal connection at 44 with the dozer blade 12.
These universal connections 40 and 44 may be of the ballandsocket type similar to that made by ball 18 on the end of the push frame 14 with the socket 20 defined by the blade 12 in the plate 22. For example and as shown in FIG. 3, the socket may be formed by the blade 12 and mounting plate 46.
Any suitable control system and fluid pressure source may be employed for operating the various jacks 26, 34 and 36. The control system, of course, would be manually operable in the usual way from the tutor operator's seat.
In operation, as mentioned, the dozer blade 12 is raised and lowered by actuating the lift jack 26 so as to correspondingly raise and lower the push frame 14. To pitch the dozer blade 12 forward the two upper jacks 34 both are extended. Conversely, when it is desired to pitch the dozer blade 12 backwardly, both of the upper jacks 34 are retracted. When it is desired to tilt the dozer blade 12, Le, raise one end of the dozer blade 12 or rotate the blade 12 about the longitudinal axis of the tractor 10, then one of the upper jacks 34 is extended and the other upper jack 34 is retracted. To angle the dozer blade 12, both of the upper and lower jacks 34 and 36 on one side of the tractor 10 are retracted and those on the other side are extended. In this way, the dozer blade 12 is pivoted about the vertical axis of the tractor 10.
The jacks 34 and 36 on each side of the tractor 10 are mounted so as to be parallel. For example, the jacks 34 and 36 on the left side of the tractor 10 are arranged so that the axis of each cylinder 38 is in substantial parallel alignment. With this parallelism, the dozer blade 12 does not change pitch when raised and lowered by the lift jack 26.
From the foregoing it will be appreciated that a considerably simplified push frame is provided to swivelly support a dozer blade 12 that can be angled, tilted or pitched or a combination of these movements, easily and conveniently.
What is claimed is:
I. In combination with a motor, a dozer blade, an A- shaped frame having one end thereof pivotably connected to the front end of the vehicle and an opposite end thereof swivelly connected to the dozer blade, a lift jack having one end thereof connected to the upper front end of the vehicle and an opposite end thereof connected to approximately the middle of the A- frame and operative to raise and lower the A- frame and correspondingly the dozer blade, poweroperated means for selectively maneuvering the dozer blade, the poweroperated means including a pair of doubleacting fluidoperated upper and lower jacks arranged in substantially parallel relationship on each side of the vehicle, the upper and lower jacks each having universal connections at the opposite ends with the front end of the vehicle and the ends of the dozer blade, with the pivotable connection between said one end of said A- shaped frame and the vehicle being coaxial with the transverse axis through the universal connections between the vehicle and both upper jacks or both lower jacks, so that the blade is pitched forward or backward when the upper jacks on each side of the vehicle are respectively extended or retracted, the blade is tilted when one of the upper jacks is extended and the other upper jack is retracted and the blade is angled when both the upper and lower jacks on one side are extended and the upper and lower jacks on the opposite side are both retracted.
2. In combination with a vehicle, an implement, a push frame having one end thereof pivotably connected to the front end of the vehicle for movement about an axis transverse the the longitudinal axis of the vehicle and the opposite end thereof having a ball socket connection with the implement so that the implement is swivelable relative to the frame, means for selectively maneuvering the implement relative to the frame, the maneuvering means including a pair of substantially parallel upper and lower retractable and extensible strut members on each side of the vehicle, each strut member havhaving one end thereof connected to the upper front end of the vehicle and the opposite end thereof connected to approximately the middle part of the push frame and operative to raise and lower the frame and correspondingly the implement relative to the front end of the vehicle.
Claims (2)
1. In combination with a motor, a dozer blade, an A-shaped frame having one end thereof pivotably connected to the front end of the vehicle and an opposite end thereof swivelly connected to the dozer blade, a lift jack having one end thereof connected to the upper front end of the vehicle and an opposite end thereof connected to approximately the middle of the A-frame and operative to raise and lower the A-frame and correspondingly the dozer blade, power-operated means for selectively maneuvering the dozer blade, the power-operated means including a pair of doubleacting fluid-operated upper and lower jacks arranged in substantially parallel relationship on each side of the vehicle, the uPper and lower jacks each having universal connections at the opposite ends with the front end of the vehicle and the ends of the dozer blade, with the pivotable connection between said one end of said A-shaped frame and the vehicle being coaxial with the transverse axis through the universal connections between the vehicle and both upper jacks or both lower jacks, so that the blade is pitched forward or backward when the upper jacks on each side of the vehicle are respectively extended or retracted, the blade is tilted when one of the upper jacks is extended and the other upper jack is retracted and the blade is angled when both the upper and lower jacks on one side are extended and the upper and lower jacks on the opposite side are both retracted.
2. In combination with a vehicle, an implement, a push frame having one end thereof pivotably connected to the front end of the vehicle for movement about an axis transverse the the longitudinal axis of the vehicle and the opposite end thereof having a ball socket connection with the implement so that the implement is swivelable relative to the frame, means for selectively maneuvering the implement relative to the frame, the maneuvering means including a pair of substantially parallel upper and lower retractable and extensible strut members on each side of the vehicle, each strut member having its opposite ends universally connected respectively to the vehicle and to the implement, with the pivotable connection between said one end of the push frame and the vehicle being coaxial with the transverse axis through the universal connections between the vehicle and both upper struts or both lower struts, the maneuvering means further including a lift jack having one end thereof connected to the upper front end of the vehicle and the opposite end thereof connected to approximately the middle part of the push frame and operative to raise and lower the frame and correspondingly the implement relative to the front end of the vehicle.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88450969A | 1969-12-12 | 1969-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3631931A true US3631931A (en) | 1972-01-04 |
Family
ID=25384777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US884509A Expired - Lifetime US3631931A (en) | 1969-12-12 | 1969-12-12 | Bulldozer |
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Country | Link |
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US (1) | US3631931A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913684A (en) * | 1974-12-13 | 1975-10-21 | Caterpillar Tractor Co | Implement mounting arrangement having lifting and angling capability |
US4120366A (en) * | 1977-08-31 | 1978-10-17 | J. I. Case Company | Mounting arrangement for dozer blade |
US4147218A (en) * | 1977-09-29 | 1979-04-03 | Caterpillar Tractor Co. | Bulldozer attachment for four-tracked tractor |
FR2406031A1 (en) * | 1977-08-12 | 1979-05-11 | Dresser Ind | ROUTER PLANING MACHINE WITH PERFECTED CUTTING DRUM SUSPENSION |
US6105682A (en) * | 1998-12-02 | 2000-08-22 | Caterpillar Inc. | Apparatus for controlling an earthworking implement having four degrees of freedom |
US6360459B1 (en) | 2000-05-12 | 2002-03-26 | Caterpillar Inc. | Tiltable bucket assembly |
US20090050342A1 (en) * | 2005-06-30 | 2009-02-26 | Deere & Company | Grease actuated ball and socket joint |
US20110114343A1 (en) * | 2009-11-13 | 2011-05-19 | Gaurav Genani | Push Frame With Tapered Cross-Beam |
US9267264B2 (en) * | 2011-05-04 | 2016-02-23 | Deere & Company | Blade pivot mechanism |
US20160108603A1 (en) * | 2015-10-27 | 2016-04-21 | Caterpillar Inc. | System for controlling earthworking implement |
US20170096794A1 (en) * | 2015-10-02 | 2017-04-06 | Caterpillar Inc. | Blade assembly having socket support plate |
US10323382B2 (en) * | 2014-06-10 | 2019-06-18 | Progressive Ip Limited | Blade levelling apparatus and mounting system |
US10676894B2 (en) | 2014-06-10 | 2020-06-09 | Progressive Ip Limited | Blade levelling apparatus with provision for mounted accessories |
US20200299926A1 (en) * | 2019-03-19 | 2020-09-24 | Clark Equipment Company | Excavator blade cylinder |
US20210010232A1 (en) * | 2019-07-11 | 2021-01-14 | Hank Rose | Reconfigurable box blade |
WO2024152118A1 (en) * | 2023-01-20 | 2024-07-25 | Bilodeau Martin Nicolas Benoit | Differential dozer blade lift and angle mechanism |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2374016A (en) * | 1940-10-16 | 1945-04-17 | Richard F Henneuse | Scraper |
US2722066A (en) * | 1950-11-16 | 1955-11-01 | Marion C Wills | Bulldozing attachment for tractors |
US2927385A (en) * | 1954-09-03 | 1960-03-08 | Fairchild Engine & Airplane | Bulldozer |
US3122850A (en) * | 1962-03-26 | 1964-03-03 | Allis Chalmers Mfg Co | Four wheel vehicle |
US3234670A (en) * | 1962-06-22 | 1966-02-15 | Caterpillar Tractor Co | Bracing arrangement for tiltdozer blades |
US3503456A (en) * | 1967-09-01 | 1970-03-31 | Caterpillar Tractor Co | Mounting linkage for rippers |
US3529678A (en) * | 1968-08-14 | 1970-09-22 | Caterpillar Tractor Co | Mounting for bulldozer blades |
-
1969
- 1969-12-12 US US884509A patent/US3631931A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2374016A (en) * | 1940-10-16 | 1945-04-17 | Richard F Henneuse | Scraper |
US2722066A (en) * | 1950-11-16 | 1955-11-01 | Marion C Wills | Bulldozing attachment for tractors |
US2927385A (en) * | 1954-09-03 | 1960-03-08 | Fairchild Engine & Airplane | Bulldozer |
US3122850A (en) * | 1962-03-26 | 1964-03-03 | Allis Chalmers Mfg Co | Four wheel vehicle |
US3234670A (en) * | 1962-06-22 | 1966-02-15 | Caterpillar Tractor Co | Bracing arrangement for tiltdozer blades |
US3503456A (en) * | 1967-09-01 | 1970-03-31 | Caterpillar Tractor Co | Mounting linkage for rippers |
US3529678A (en) * | 1968-08-14 | 1970-09-22 | Caterpillar Tractor Co | Mounting for bulldozer blades |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913684A (en) * | 1974-12-13 | 1975-10-21 | Caterpillar Tractor Co | Implement mounting arrangement having lifting and angling capability |
FR2406031A1 (en) * | 1977-08-12 | 1979-05-11 | Dresser Ind | ROUTER PLANING MACHINE WITH PERFECTED CUTTING DRUM SUSPENSION |
US4154481A (en) * | 1977-08-12 | 1979-05-15 | Dresser Industries, Inc. | Road planer with improved cutting drum suspension |
US4120366A (en) * | 1977-08-31 | 1978-10-17 | J. I. Case Company | Mounting arrangement for dozer blade |
US4147218A (en) * | 1977-09-29 | 1979-04-03 | Caterpillar Tractor Co. | Bulldozer attachment for four-tracked tractor |
US6105682A (en) * | 1998-12-02 | 2000-08-22 | Caterpillar Inc. | Apparatus for controlling an earthworking implement having four degrees of freedom |
US6360459B1 (en) | 2000-05-12 | 2002-03-26 | Caterpillar Inc. | Tiltable bucket assembly |
US20090050342A1 (en) * | 2005-06-30 | 2009-02-26 | Deere & Company | Grease actuated ball and socket joint |
US7814985B2 (en) * | 2005-06-30 | 2010-10-19 | Deere & Company | Grease actuated ball and socket joint |
US8490712B2 (en) * | 2009-11-13 | 2013-07-23 | Deere & Company | Push frame with tapered cross-beam |
US20110114343A1 (en) * | 2009-11-13 | 2011-05-19 | Gaurav Genani | Push Frame With Tapered Cross-Beam |
US9267264B2 (en) * | 2011-05-04 | 2016-02-23 | Deere & Company | Blade pivot mechanism |
US10323382B2 (en) * | 2014-06-10 | 2019-06-18 | Progressive Ip Limited | Blade levelling apparatus and mounting system |
US10676894B2 (en) | 2014-06-10 | 2020-06-09 | Progressive Ip Limited | Blade levelling apparatus with provision for mounted accessories |
US11236484B2 (en) * | 2014-06-10 | 2022-02-01 | Progressive Ip Limited | Blade levelling apparatus and mounting system |
US20170096794A1 (en) * | 2015-10-02 | 2017-04-06 | Caterpillar Inc. | Blade assembly having socket support plate |
US20160108603A1 (en) * | 2015-10-27 | 2016-04-21 | Caterpillar Inc. | System for controlling earthworking implement |
US20200299926A1 (en) * | 2019-03-19 | 2020-09-24 | Clark Equipment Company | Excavator blade cylinder |
US12024854B2 (en) * | 2019-03-19 | 2024-07-02 | Doosan Bobcat North America Inc. | Excavator blade cylinder |
US20210010232A1 (en) * | 2019-07-11 | 2021-01-14 | Hank Rose | Reconfigurable box blade |
WO2024152118A1 (en) * | 2023-01-20 | 2024-07-25 | Bilodeau Martin Nicolas Benoit | Differential dozer blade lift and angle mechanism |
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