US3238648A - Bulldozer with adjustable stinger bit - Google Patents
Bulldozer with adjustable stinger bit Download PDFInfo
- Publication number
- US3238648A US3238648A US332388A US33238863A US3238648A US 3238648 A US3238648 A US 3238648A US 332388 A US332388 A US 332388A US 33238863 A US33238863 A US 33238863A US 3238648 A US3238648 A US 3238648A
- Authority
- US
- United States
- Prior art keywords
- blade
- bulldozer
- stinger
- bit
- adjustable
- 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
Links
Images
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
- E02F3/80—Component parts
-
- 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
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8152—Attachments therefor, e.g. wear resisting parts, cutting edges
-
- 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
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8155—Blades; Levelling or scarifying tools provided with movable parts, e.g. cutting discs, vibrating teeth or the like
Definitions
- Earth working blades on some implements such as earth moving scrapers are provided with a stinger bit or blade portion which extends forwardly or downwardly of the main cutting edge. This reduces the force and traction necessary to move the blade forwardly through hard packed or virgin soil.
- Such stinger bits have seldom been employed on bulldozer blades because they prevent normal clean up or grading work which are functions of bulldozers after initial pioneering or rough work is complete.
- the function of a stinger bit is nonetheless highly desirable in bulldozer operations because it enables the making of a reasonably deep cut through material so hard that it overtaxes the tractor engine and tractive ability when the full width of the blade is penetrating the earth.
- a short blade is also desirable when resistance to cutting is greater toward one end of the blade.
- a further object of the invention is to provide power means controllable by a tractor operator for adjusting the position of such a bit from the operators station.
- FIG. 1 is a view in side elevation of a tractor carrying a bulldozer embodying the present invention
- FIG. 2 is an enlarged end elevation with parts in section of the bulldozer blade shown in FIG. 1 with the stinger bit retracted;
- FIG. 3 is a view like FIG. 2 showing the stinger b-it advanced downwardly;
- FIG. 4 is a view in rear elevation of the blade and adjustable stinger bit.
- FIG. 5 is a view in front elevation of the blade and stinger bit showing positions of the tractor wheels and advanced stinger bit in broken lines.
- the invention is applicable to bulldozers mounted either on track type or wheel type tractors but is shown for purposes of illustration in FIG. 1 as associated with a wheel type tractor of known kind illustrated generally at 10.
- a bulldozer blade 11 is mounted forwardly of the tractor by means of conventional push arms 12.
- the blade is adapted to be raised and lowered by hydraulic jack means represented at 13 and pitch or tilt of the blade may be adjusted through conventional adjustable tilt braces one of which is shown at 14.
- the conventional cutting edge of a bulldozer blade which is a hardened plate secured to its lower forward portion is in accordance with the present invention formed, as clearly illustrated in FIG. 5 of three separate portions 16, 17 and 18.
- the portions 16 and 17 are rigidly secured to the blade itself and the central portion 18, which is preferably approximately /3 of the width of the blade, is adjustable so that it may be lowered to penetrate the earth as illustrated in FIGS. 1 and 3 while the fixed blades 16 and 17 are disposed at or above ground level.
- a plate 20 carried by a pair of arms 21 pivotally connected as at 22 to pairs of spaced brackets 23 (see FIGS. 2, 3 and 4) welded or otherwise firmly secured to the back of the main bulldozer blade structure 11.
- the stinger bit 18 is disposed for movement between its upper position shown in FIG. 2 where it moves on the same level as the cutting edges 16 and 17 and its lowered position shown in FIG. 3 where it penetrates the earth while the cutting edges 16 and 17 are disposed at ground level.
- a skid plate 25 is supported by a bracket 26 behind the stinger bit and registers with a conventional skid plate 27 shown in dotted lines in FIG.
- any suitable power means may be employed which is capable of adjustment from the tractor operators station.
- Such power means is herein shown as a pair of hydraulic jacks 28 mounted by trunnions 29 and bearings 30 at the upper end of the brackets 23 and having rods pivotally connected as at 31 with the arms 21.
- a well known and conventional circuit, not herein shown, may be employed for adjusting the jacks 28 with a control valve at the operators station.
- the jacks are preferably protected from rock or debris spilling over the top of the bulldozer blade by canopies such as shown at 33 secured to and extending rearwardly from the upper rear surface of the bulldozer blade.
- the width of the stinger bit is approximately of the width of the entire bulldozer blade but, in any event, should not exceed the space between the wheels or tracks of the tractor upon which the bulldozer is mounted.
- the bit 18 shown in broken lines in its extended position will make a relatively narrow out leaving full traction on firm ground for the tractor wheels.
- a bulldozer having a blade, said blade having to transversely spaced and aligned cutting edges secured forwardly of the lower edge of the blade adjacent its ends, a third cutting edge in the space between the first cutting edges, and means supporting the third cutting edge for movement between a position substantially aligned with the first cutting edges so as to define a scraper and a lower position for use as a stinger bit.
Landscapes
- 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)
- Soil Working Implements (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Description
March 8, 1966 D. E. COBB ETAL BULLDOZER WITH ADJUSTABLE STINGER BIT 5 Sheets-Sheet 1 Filed Dec. 23, 1963 INVENTORS.
ATTORNEYS March 8, 1966 5, 055 ET AL BULLDOZER WITH ADJUSTABLE STINGER BIT 5 Sheets-Sheet 2 Filed Dec. 23, 1963 1 INVENTORS.
DELWIN E, CoBB LLOYD K. HEINOLD ATT ORNEYS March 8, 1966 D. E. cows ET AL 3,238,648
BULLDOZER WITH ADJUSTABLE STINGER BIT Filed Dec. 25, 1963 5 Sheets-Sheet 5 INVENTORS.
DELWIN E. COBB "I H BYLLOYD K. HEJNOLD ATTORNEYS United States Patent 3,238,648 BULLDOZER WITH ADJUSTABLE STINGER BIT Delwin E. Cobb and Lloyd K. Heinold, Peoria, 111., assignors to Caterpillar Tractor Co., Peoria, Ill., a corporation of California Filed Dec. 23, 1963, Ser. No. 332,388 2 Claims. (Cl. 37-144) This invention relates to bulldozers and particularly to a bulldozer blade having a portion of its cutting edge adjustable or advanceable downwardly to penetrate the earth while the remainder of the blade is at or above ground level.
Earth working blades on some implements such as earth moving scrapers are provided with a stinger bit or blade portion which extends forwardly or downwardly of the main cutting edge. This reduces the force and traction necessary to move the blade forwardly through hard packed or virgin soil. Such stinger bits have seldom been employed on bulldozer blades because they prevent normal clean up or grading work which are functions of bulldozers after initial pioneering or rough work is complete. The function of a stinger bit is nonetheless highly desirable in bulldozer operations because it enables the making of a reasonably deep cut through material so hard that it overtaxes the tractor engine and tractive ability when the full width of the blade is penetrating the earth. A short blade is also desirable when resistance to cutting is greater toward one end of the blade. For example, in the course of pioneering operations one end of the blade often penetrates the earth more deeply than the other or encounters areas of highly compacted earth or rock. The resulting intermittent loading of an outer end of the blade makes steering difiicult and tends to cause skewing of the tractor from its intended course.
It is therefore an object of the present invention to provide a bulldozer with an adjustable or retractable stinger bit to enable the blade to be used optionally for normal or stinger bit operations.
A further object of the invention is to provide power means controllable by a tractor operator for adjusting the position of such a bit from the operators station.
Further and more specific objects and advantages of the invention and the manner in which it is carried into practice are made apparent in the following specification wherein reference is made to the accompanying drawings.
In the drawings:
FIG. 1 is a view in side elevation of a tractor carrying a bulldozer embodying the present invention;
FIG. 2 is an enlarged end elevation with parts in section of the bulldozer blade shown in FIG. 1 with the stinger bit retracted;
FIG. 3 is a view like FIG. 2 showing the stinger b-it advanced downwardly;
FIG. 4 is a view in rear elevation of the blade and adjustable stinger bit; and
FIG. 5 is a view in front elevation of the blade and stinger bit showing positions of the tractor wheels and advanced stinger bit in broken lines.
The invention is applicable to bulldozers mounted either on track type or wheel type tractors but is shown for purposes of illustration in FIG. 1 as associated with a wheel type tractor of known kind illustrated generally at 10. A bulldozer blade 11 is mounted forwardly of the tractor by means of conventional push arms 12. The
"ice
blade is adapted to be raised and lowered by hydraulic jack means represented at 13 and pitch or tilt of the blade may be adjusted through conventional adjustable tilt braces one of which is shown at 14. The conventional cutting edge of a bulldozer blade which is a hardened plate secured to its lower forward portion is in accordance with the present invention formed, as clearly illustrated in FIG. 5 of three separate portions 16, 17 and 18. The portions 16 and 17 are rigidly secured to the blade itself and the central portion 18, which is preferably approximately /3 of the width of the blade, is adjustable so that it may be lowered to penetrate the earth as illustrated in FIGS. 1 and 3 while the fixed blades 16 and 17 are disposed at or above ground level.
To support the stinger bit for adjustment it is secured to the forward face of a plate 20 carried by a pair of arms 21 pivotally connected as at 22 to pairs of spaced brackets 23 (see FIGS. 2, 3 and 4) welded or otherwise firmly secured to the back of the main bulldozer blade structure 11. Through this construction the stinger bit 18 is disposed for movement between its upper position shown in FIG. 2 where it moves on the same level as the cutting edges 16 and 17 and its lowered position shown in FIG. 3 where it penetrates the earth while the cutting edges 16 and 17 are disposed at ground level. A skid plate 25 is supported by a bracket 26 behind the stinger bit and registers with a conventional skid plate 27 shown in dotted lines in FIG. 3, one of which is disposed behind each of the cutting edges 16 and 17. Consequently when the stinger bit is raised as in FIG. 2 all three skid plates can ride on the surface of the earth in the normal manner for clean-up operations and the like and the skid plates 27 can ride in the same manner when the stinger bit is lowered beneath the surface as shown in FIG. 3. In the position of FIG. 3 earth cut and moved forwardly by the stinger bit will be advanced in the usual manner by the entire blade because of the ground level positions of the cutting edges 16 and 17. The plate 20 is, as shown in FIG. 3, extended upwardly to provide a portion 204: which fills the void between the cutting edges 16 and 17 when the stinger bit is in its lowered position.
In order to adjust the position of the stinger bit any suitable power means may be employed which is capable of adjustment from the tractor operators station. Such power means is herein shown as a pair of hydraulic jacks 28 mounted by trunnions 29 and bearings 30 at the upper end of the brackets 23 and having rods pivotally connected as at 31 with the arms 21. A well known and conventional circuit, not herein shown, may be employed for adjusting the jacks 28 with a control valve at the operators station. The jacks are preferably protected from rock or debris spilling over the top of the bulldozer blade by canopies such as shown at 33 secured to and extending rearwardly from the upper rear surface of the bulldozer blade.
As previously stated the width of the stinger bit is approximately of the width of the entire bulldozer blade but, in any event, should not exceed the space between the wheels or tracks of the tractor upon which the bulldozer is mounted. For example, as illustrated in FIG. 5, where the tractor wheels are indicated at 35, the bit 18 shown in broken lines in its extended position will make a relatively narrow out leaving full traction on firm ground for the tractor wheels.
We claim:
1. In a bulldozer having a blade, said blade having to transversely spaced and aligned cutting edges secured forwardly of the lower edge of the blade adjacent its ends, a third cutting edge in the space between the first cutting edges, and means supporting the third cutting edge for movement between a position substantially aligned with the first cutting edges so as to define a scraper and a lower position for use as a stinger bit.
2. The combination of claim 1 with means movable with the third cutting edge to fill the void between the first two cutting edges when the third edge is used as a stinger bit.
References Cited by the Examiner UNITED STATES PATENTS Dean 37-143 Spoon 37-143 Stout 37-1175 Armington 37-144 Lindberg 37-145 Hoxie 37-145 Cron 37-98 ABRAHAM G. STONE, Primary Examiner.
Claims (1)
1. IN A BULLDOZER HAVING A BLADE, SAID BLADE HAVING TO TRANSVERSELY SPACED AND ALIGNED CUTTING EDGES SECURED FORWARDLY OF THE LOWER EDGE OF THE BLADE ADJACENT ITS ENDS, A THIRD CUTTING EDGE IN THE SPACE BETWEEN THE FIRST CUTTING EDGES, AND MEANS SUPPORTING THE THIRD CUTTING EDGE FOR MOVEMENT BETWEEN A POSITION SUBSTANTIALLY ALIGNED WITH THE FIRST CUTTING EDGES SO AS TO DEFINE A SCRAPER AND A LOWER POSITION FOR USE AS A STINGER BIT.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US332388A US3238648A (en) | 1963-12-23 | 1963-12-23 | Bulldozer with adjustable stinger bit |
GB47127/64A GB1035880A (en) | 1963-12-23 | 1964-11-19 | Bulldozer with adjustable stinger bit |
FR997632A FR1416808A (en) | 1963-12-23 | 1964-12-07 | Adjustable spur button |
DE1484643A DE1484643C3 (en) | 1963-12-23 | 1964-12-21 | Leveler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US332388A US3238648A (en) | 1963-12-23 | 1963-12-23 | Bulldozer with adjustable stinger bit |
Publications (1)
Publication Number | Publication Date |
---|---|
US3238648A true US3238648A (en) | 1966-03-08 |
Family
ID=23298011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US332388A Expired - Lifetime US3238648A (en) | 1963-12-23 | 1963-12-23 | Bulldozer with adjustable stinger bit |
Country Status (3)
Country | Link |
---|---|
US (1) | US3238648A (en) |
DE (1) | DE1484643C3 (en) |
GB (1) | GB1035880A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3347577A (en) * | 1964-12-24 | 1967-10-17 | Allis Chalmers Mfg Co | Pivot construction |
US3466770A (en) * | 1966-09-16 | 1969-09-16 | Frank W Morrison | Self-propelled earth excavating and leveling apparatus |
US3528509A (en) * | 1968-09-11 | 1970-09-15 | Clark Equipment Co | Bulldozer blade with extendible cutting edge |
US3789524A (en) * | 1972-10-10 | 1974-02-05 | D Mashuda | Pipe cradler attachment for excavator bucket |
US3897641A (en) * | 1974-04-19 | 1975-08-05 | Caterpillar Tractor Co | Stinger bit for loader buckets |
US3941262A (en) * | 1974-02-01 | 1976-03-02 | Caterpillar Tractor Co. | Pivotally disposable bucket |
US5392864A (en) * | 1992-05-01 | 1995-02-28 | Balderson Inc. | Blade assembly for a compacting vehicle |
US5603172A (en) * | 1994-11-14 | 1997-02-18 | Maher; Richard J. | Selectively reversible resilient plow blade and kit |
WO2006015498A1 (en) * | 2004-08-12 | 2006-02-16 | Volvo Motor Graders Limited | Cutting edge with trailing wear plate |
US20080127532A1 (en) * | 2006-12-01 | 2008-06-05 | Reid Robert L | Excavation bucket assembly |
US20100031538A1 (en) * | 2006-09-04 | 2010-02-11 | Agrator Pty Ltd. as trustee for Gessner Unit Trust | Blade assembly for an excavating apparatus |
US8479838B1 (en) | 2011-12-21 | 2013-07-09 | Caterpillar Inc. | Dozing blade assembly, cutter and dozing method |
US8602122B2 (en) | 2011-12-21 | 2013-12-10 | Caterpillar Inc. | Track-type tractor, dozing blade assembly, and dozing blade with steep center segment |
US8631596B2 (en) | 2011-01-20 | 2014-01-21 | Ben Tulibaski | Material-handling bucket with scraper blade |
US8701313B2 (en) * | 2006-09-04 | 2014-04-22 | Spadeblade Pty Ltd | Blade assembly for an excavating apparatus |
US8783376B2 (en) | 2012-08-09 | 2014-07-22 | Caterpillar Inc. | Cutter for dozing blade, service package, and method |
US20140222301A1 (en) * | 2009-09-04 | 2014-08-07 | Philip Paull | Apparatus for adapting a hoe bucket for depth control |
US9562343B2 (en) | 2013-10-16 | 2017-02-07 | Philip Paull | Cable-laying plow attachment for a backhoe and method for using the same |
US9611620B2 (en) | 2009-09-04 | 2017-04-04 | Philip Paull | Apparatus and method for enhanced grading control |
US9670641B2 (en) | 2009-09-04 | 2017-06-06 | Philip Paull | Valve systems and method for enhanced grading control |
US9777465B2 (en) | 2009-09-04 | 2017-10-03 | Philip Paull | Apparatus and method for enhanced grading control |
US10161112B2 (en) | 2015-05-22 | 2018-12-25 | Philip Paull | Valve systems and method for enhanced grading control |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876867A (en) * | 1931-10-07 | 1932-09-13 | Charles G Willett | Spring grader and moldboard |
US1944307A (en) * | 1931-12-08 | 1934-01-23 | William L Spoon | Channeler attachment to road grading machines |
US2029122A (en) * | 1935-01-12 | 1936-01-28 | John C Wynecoop | Grading machine |
US2052929A (en) * | 1932-10-27 | 1936-09-01 | Honeywell Regulator Co | Electrically operated fluid flow controlling mechanism |
US2899760A (en) * | 1954-04-20 | 1959-08-18 | Multi-purpose bulldozer blade | |
US2993285A (en) * | 1959-07-09 | 1961-07-25 | Herbert G Hoxie | Scarifier attachment for bulldozers |
US3039209A (en) * | 1959-03-13 | 1962-06-19 | James C Cron | Ditch forming attachment for a road grader |
-
1963
- 1963-12-23 US US332388A patent/US3238648A/en not_active Expired - Lifetime
-
1964
- 1964-11-19 GB GB47127/64A patent/GB1035880A/en not_active Expired
- 1964-12-21 DE DE1484643A patent/DE1484643C3/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876867A (en) * | 1931-10-07 | 1932-09-13 | Charles G Willett | Spring grader and moldboard |
US1944307A (en) * | 1931-12-08 | 1934-01-23 | William L Spoon | Channeler attachment to road grading machines |
US2052929A (en) * | 1932-10-27 | 1936-09-01 | Honeywell Regulator Co | Electrically operated fluid flow controlling mechanism |
US2029122A (en) * | 1935-01-12 | 1936-01-28 | John C Wynecoop | Grading machine |
US2899760A (en) * | 1954-04-20 | 1959-08-18 | Multi-purpose bulldozer blade | |
US3039209A (en) * | 1959-03-13 | 1962-06-19 | James C Cron | Ditch forming attachment for a road grader |
US2993285A (en) * | 1959-07-09 | 1961-07-25 | Herbert G Hoxie | Scarifier attachment for bulldozers |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3347577A (en) * | 1964-12-24 | 1967-10-17 | Allis Chalmers Mfg Co | Pivot construction |
US3466770A (en) * | 1966-09-16 | 1969-09-16 | Frank W Morrison | Self-propelled earth excavating and leveling apparatus |
US3528509A (en) * | 1968-09-11 | 1970-09-15 | Clark Equipment Co | Bulldozer blade with extendible cutting edge |
US3789524A (en) * | 1972-10-10 | 1974-02-05 | D Mashuda | Pipe cradler attachment for excavator bucket |
US3941262A (en) * | 1974-02-01 | 1976-03-02 | Caterpillar Tractor Co. | Pivotally disposable bucket |
US3897641A (en) * | 1974-04-19 | 1975-08-05 | Caterpillar Tractor Co | Stinger bit for loader buckets |
US5392864A (en) * | 1992-05-01 | 1995-02-28 | Balderson Inc. | Blade assembly for a compacting vehicle |
US5603172A (en) * | 1994-11-14 | 1997-02-18 | Maher; Richard J. | Selectively reversible resilient plow blade and kit |
WO2006015498A1 (en) * | 2004-08-12 | 2006-02-16 | Volvo Motor Graders Limited | Cutting edge with trailing wear plate |
US20070215367A1 (en) * | 2004-08-12 | 2007-09-20 | Smart William J | Cutting edge with trailing wear plate |
US20100031538A1 (en) * | 2006-09-04 | 2010-02-11 | Agrator Pty Ltd. as trustee for Gessner Unit Trust | Blade assembly for an excavating apparatus |
US8701313B2 (en) * | 2006-09-04 | 2014-04-22 | Spadeblade Pty Ltd | Blade assembly for an excavating apparatus |
US8291624B2 (en) * | 2006-09-04 | 2012-10-23 | Agrator Pty Ltd As Trustee For Gessner Unit Trust | Blade assembly for an excavating apparatus |
US20080127532A1 (en) * | 2006-12-01 | 2008-06-05 | Reid Robert L | Excavation bucket assembly |
US7506462B2 (en) * | 2006-12-01 | 2009-03-24 | Reid Robert L | Excavation bucket assembly |
US8875421B2 (en) * | 2009-09-04 | 2014-11-04 | Philip Paull | Apparatus for adapting a hoe bucket for depth control |
US20140222301A1 (en) * | 2009-09-04 | 2014-08-07 | Philip Paull | Apparatus for adapting a hoe bucket for depth control |
US9611620B2 (en) | 2009-09-04 | 2017-04-04 | Philip Paull | Apparatus and method for enhanced grading control |
US9670641B2 (en) | 2009-09-04 | 2017-06-06 | Philip Paull | Valve systems and method for enhanced grading control |
US9777465B2 (en) | 2009-09-04 | 2017-10-03 | Philip Paull | Apparatus and method for enhanced grading control |
US8631596B2 (en) | 2011-01-20 | 2014-01-21 | Ben Tulibaski | Material-handling bucket with scraper blade |
US8602122B2 (en) | 2011-12-21 | 2013-12-10 | Caterpillar Inc. | Track-type tractor, dozing blade assembly, and dozing blade with steep center segment |
US8479838B1 (en) | 2011-12-21 | 2013-07-09 | Caterpillar Inc. | Dozing blade assembly, cutter and dozing method |
US8783376B2 (en) | 2012-08-09 | 2014-07-22 | Caterpillar Inc. | Cutter for dozing blade, service package, and method |
US9562343B2 (en) | 2013-10-16 | 2017-02-07 | Philip Paull | Cable-laying plow attachment for a backhoe and method for using the same |
US10161112B2 (en) | 2015-05-22 | 2018-12-25 | Philip Paull | Valve systems and method for enhanced grading control |
Also Published As
Publication number | Publication date |
---|---|
DE1484643A1 (en) | 1969-02-13 |
GB1035880A (en) | 1966-07-13 |
DE1484643B2 (en) | 1973-11-08 |
DE1484643C3 (en) | 1974-06-06 |
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