US3466766A - Snowplow accessory - Google Patents

Snowplow accessory Download PDF

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Publication number
US3466766A
US3466766A US660634A US3466766DA US3466766A US 3466766 A US3466766 A US 3466766A US 660634 A US660634 A US 660634A US 3466766D A US3466766D A US 3466766DA US 3466766 A US3466766 A US 3466766A
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United States
Prior art keywords
removal
snowplow
scraper
accessory
slush
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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US660634A
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English (en)
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Anton Kahlbacher
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/065—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades characterised by the form of the snow-plough blade, e.g. flexible, or by snow-plough blade accessories
    • E01H5/066—Snow-plough blade accessories, e.g. deflector plates, skid shoes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/061—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by scraper blades
    • E01H5/062—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by scraper blades by scraper blades displaceable for shock-absorbing purposes

Definitions

  • a snowplow accessory comprising a scraper resiliently suspended behind a snow removal blade for being selectively moved into a working position beneath the snow removal blade for the removal of slush and into an inoperative position above the snow removal blade, the slush removal scrape blade being elastically urged against the rear surface of the snow removal blade.
  • the invention relates to a snowplow accessory having a resiliently suspended scraper for the removal of snow slush.
  • the device is provided on a supporting frame which-together with the scraper for the removal of slushis rotatable about a bracing tube of the supporting frame, is pressed against the rear side of the scraper by spring or elastic means and is resiliently secured to the latter.
  • a casing is preferably provided on the bracing tube comprising an adjustable spindle the end of which is adjustable in a casing of the supporting frame and may be fixed by means of .a stop.
  • A. screw thread is provided on the spindle by means of which the latter is adjustable in the corresponding screw thread of the casing by the action of the handle provided at the end of the spindle, the latter thus raising the removal scraper.
  • a rack may be provided on the surface of the casing which is in mesh with a gear wheel fixed on the bracing tube, a reversible motor, for example an electric, hydraulic or pneumatic motor, driving the gear wheel through a gearing, thus adjusting the height of the casing through the gear wheel. If several plowshare segments are used, shafts connected by cardan joints are applied to raise or lower the slush removal scraper fixed to each segment.
  • a preferable embodiment of the invention consists in that a pressure spring is provided between the bottom of the casing and the end of the spindle movable in the latter, by which the supporting frame is resiliently supported on the end of the spindle, a bolt fixed to the spindle and sliding in a supporting frame and the spindle.
  • the resilient suspension of the scraper for the removal of slush may consist of at least one anchored spring coupling provided between the upper edge of the mounting of the removal scraper on the one hand and the plow frame on the other.
  • the spring coupling may consist of helical springs which encircle anchoring bolts on the mounting of the removal scraper and the plow frame.
  • the scraper for the removal of slush itself consists of polymeric plastic material or the like in order to preclude damage to the road as far as possible.
  • FIGURE 1 is a side view of the device for the removal of slush according to the invention, wherein the device is lifted up and lowered by means of a handle.
  • FIGURE 2 is a front view of a slush removal scraper.
  • FIGURE 3 is .a rear view of two segments of a divided snowplow comprising the device for the removal of slush according to the invention.
  • FIGURE 4 is another embodiment of the snowplow accessory.
  • FIGURE 5 is a rear view of the device according to the invention provided on two segments of a known snowplow;
  • FIGURE 6 is a side view of the machine-control of the device
  • FIGURE 7 is a rear view of the device provided on two segments of a divided plowshare
  • FIGURE 8 is a section through a scraper along line I--I of FIGURE 2;
  • FIGURES 9 and 10 are side views of other embodiments of removal scrapers
  • FIGURE 11 illustrates in front view another embodiment of a snowplow accessory according to the invention.
  • FIGURE 12 illustrates this embodiment in side View, taken on line IIII of FIGURE 11.
  • the snowplow accessory consists of a supporting frame 1 comprising a removal scraper 2, which preferably consists of polymeric plastic material, but may also be fabricated of other material.
  • the supporting frame 1 is rotatably fixed to the bracing tube 4 of the snowplow through a casing 3 in which a spindle 3' is adjustable by means of a handle 5 and the end of which is adjustable in a casing 1' of the supporting frame 1.
  • a pressure spring 14 is provided between the bottom of the casing 1' and the end of the spindle 3' mounted in the latter, in such manner that the spindle 3' is resiliently adjustable in the casing 1'; the clearance of the spindle 3' is given by the size of a slot 25 in the casing 1, in which a bolt 26 rigidly connected with the spindle 3' is guided, the latter preventing the spindle 3' from being completely withdrawn from the casing 1.
  • a runner 6 is swingably connected with the frame 1 by which the distance of the removal scraper 2 from the ground is determined. As the edge of the removal scraper 2 is continuously worn away during service, the axis 8 of the runner 6 may be set in different mountings 8' and may be adjusted according to the degree of wear of the removal scraper 2.
  • the mounting of the runner 6 is provided with a bearing 7 which is rotatable about a bearing pin rigidly connected with the frame 1.
  • the runner 6 may easily be adapted to each change of direction of the snowplow.
  • the removal scraper 2 must lie close against the scraper 9 of the frame 13.
  • the removal scraper 2 must be able to turn aside in order to prevent damage to the device.
  • This is attained by applying two resiliently mounted chains 10 or the like (FIG- URES 1 and 3), which are fastened to the supporting frame 1 are connected with the plow frame 13 through guide rollers 11 and draw the supporting frame 1 in the direction of the plowshare, firmly pressing the removal scraper 2 towards the scraper 9.
  • tightening screws 12 are inserted in the chains 10.
  • FIGURE 3 illustratesin rear view-two segments of a divided snowplow according to an an embodiment of the snowplow accessory as shown in FIGURE 1.
  • a device according to the invention is suspended on each segment on the continuous bracing tube 4 of the snowplow. It is important to emphasize that the resilient mounting permits lifting up of the removal scraper 2 by means of the pressure spring 14 in case of small obstacles. It is convenient to select the strength of the spring 14 and the tension of the chains 10 in such manner that, in case of small obstructions, the removal scraper 2 is lifted up to rest closely against the scraper 9, and is only moved away from the scraper 9 and swings back in case of severe obstructions.
  • the snowplow accessory If the snowplow accessory is to be put out of service, it is lifted by means of the spindle 3' driven by the handle 5, which is screwed up in the casing 3 by means of its thread. A rotation of the handle in opposite direction lowers the device, thus putting the latter into service.
  • FIGURES 6 and 7 show another embodiment which in principleis similar to that of FIGURES 1 and 3, wherein the device is lifted up and lowered by an impulse provided by the motor 21.
  • the motor 21 may for example be an electric, hydraulic or pneumatic motor.
  • a rack 19 is provided which is in mesh with a gear wheel 20 fixed on the bracing tube 4.
  • a reversible motor 21 drives the gear wheel 20 by means of a step-down gearing 22, thus lifting up or lowering the casing 3.
  • the removal scraper 2 connected with the casing 3 through the supporting frame 1 and the runner 6 through the rack 19 are thus lifted or lowered.
  • FIGURES 4 and 5 another embodiment is represented.
  • the supporting frame consists of two parts 1, 1a connected by a rotating bolt 29, the part 1a being swingably suspended on the bracing tube 4.
  • Resiliently mounted chains 10 or the like, acting on the part 1 of the supporting frame and on the upper part of the plow frame 13 press the slush removal scraper 2 against the rear side of the snow scraper 9 of the plowshare.
  • the material of the removal scraper 2 may be polymeric plastic material, which simultaneously presents the advantage that it is not corroded by chemical substances.
  • the latter may be provided with a steel lamination 17; in FIGURE 2 and in the corresponding FIGURE 8, which illustrate this embodiment in section along line II, said lamination is cast in the plastic material, openings 18 in the steel lamination 17 permitting the plastic material to pass through during the casting or pressing operation and firmly to embrace the lamination.
  • FIGURES 9 and 10 two removal scrapers 2 are represented in section, wherein the lamination 17' is arranged externally, covering only the front as shown in FIGURE 9, and partially embracing the plastic material as shown in FIGURE 10.
  • the removal scraper 2 consisting for example of plastic material is inserted in a mounting 38, which is U-shaped in section, and which is provided on its upper edge with a central positioned support 31. It is swingably connected with the latter through a bolt with the piston rod 32 of a double acting hydraulic cylinder 33.
  • the hydraulic cylinder 33 is provided with two trunnions 34 which rotate in a mounting 35 of the slide device 36.
  • the slide device 36--and thus the slush removal scraper 2- is rigidly connected with the plow frame 13.
  • locking bolts 39 are provided to which locking bolts 39 on the plow frame 13 correspond.
  • Anchored coupling springs 37 encircle these locking bolts 39.
  • the slush removal scraper 2 adapts well to irregularities of the road.
  • the hydraulic cylinder 33 is controlled by a control element from the cabin of the snowplow, the slush removal scraper 2 may simply be drawn in if hard material is to be removed, so that the snow scraper proper 9 of steel, arranged on the plowshare is put into action.
  • a snowplow provided with the latter may not only be applied to remove usual or hard snow, but also to remove slush.
  • the costs of this accessory are relatively low; it is not difiicult to add it to usual snowplows and it is immediately available, if necessary.
  • this accessory may also be applied to remove other materials such as earth, sand, mud or the like.
  • a snowplow accessory comprising a frame, a resiliently suspended scraper supported on said frame for being selectively moved into a working position for the removal of slush and into an inoperative position, said scraper including a slush removal scrape blade, said frame including a bracing tube for supporting a snow removal blade in front of said scrape blade and elastic means secured to said frame and acting on said scrape blade to urge the latter resiliently against the rear surface of the snow removal blade.
  • a snowplow accessory according to claim 1 comprising means between said frame and scrape blade for lifting the scrape blade, the latter means comprising a casing on the bracing tube and an adjustable spindle mounted in the tube and having an end engaging said scrape blade.
  • a snowplow accessory according to claim 2 comprising a spring between the casing and the spindle by which said scrape blade is resiliently supported on the spindle and a bolt slidably supported in a slot provided in said casing for limiting the movement between said supporting frame and said spindle.
  • a snowplow accessory comprising a toothed rack on said casing, a gear wheel fixed on said bracing tube, a reversible drive means coupled to said gear wheel for adjusting the height of said casing and the scrape blade through the rack.
  • a snowplow accessory according to claim 7, wherein said snow removal blade comprises several plowshare segments each associated with a corresponding scrape blade, and shafts connected by cardan joints and driven from said drive means for lifting or lowering the scrape blades conjointly.
  • a snowplow accessory according to claim 2, wherein the elastic means comprises resiliently mounted tension elements connected to said scrape blade and said casing.
  • a snowplow accessory according to claim 9 comprising tightening elements coupled to said resilient elements for adjusting the tension thereof.
  • a snowplow accessory according to claim 1 comprising means between said frame and scrape blade for raising and lowering the scrape blade between said operative and inoperative positions and including a piston rod of a double acting hydraulic cylinder connected to said scrape blade at the mid-length thereof, and a slide device rigidly connected with the frame and pivotably supporting said cylinder.
  • a snowplow accessory according to claim 11, wherein said elastic means for the suspension of said scrape blade comprises several anchored coupling springs between the upper edge of the scrape blade and the frame.
  • a snowplow accessory according to claim 12, wherein said elastic means comprises helical springs which encircle anchoring bolts between said scrape blade and the frame.
  • a snowplow accessory according to claim 1, wherein said frame comprises two parts connected by a swivel bolt and resiliently mounted chains connected to said snow removal blade and said parts for urging said parts against the rear of said scrape blade whereby said blade is supported by said parts and urged against the snow removal blade.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Soil Working Implements (AREA)
US660634A 1967-05-26 1967-08-15 Snowplow accessory Expired - Lifetime US3466766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT488467A AT269204B (de) 1967-05-26 1967-05-26 Schneepflug-Zusatzgerät

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US3466766A true US3466766A (en) 1969-09-16

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AT (1) AT269204B (de)
CH (1) CH460839A (de)
GB (1) GB1196674A (de)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793752A (en) * 1972-12-29 1974-02-26 Loed Corp Convertible snow plow with auxiliary ground support
US3911601A (en) * 1974-04-08 1975-10-14 Raymond Lee Organization Inc Snow blower vehicle
US4176477A (en) * 1978-03-01 1979-12-04 Arne Farden Compact unit for excavating, compacting and loading
US4288932A (en) * 1979-02-02 1981-09-15 Kueper Walter Snow removal bar for the snow removal plate of a snow plow
US4347677A (en) * 1979-02-05 1982-09-07 Gummi Kuper Gmbh & Co. Kg Snow removal bar for the snow removal plate of a snow plow
US4574502A (en) * 1984-10-12 1986-03-11 Blau James R Transparent plow blade
US4651450A (en) * 1984-04-11 1987-03-24 Fallline Corporation Packer bar assembly
US4905387A (en) * 1989-08-21 1990-03-06 Street Wayne L Adjustable wheel for snow plow
US4944104A (en) * 1988-07-13 1990-07-31 Dennis Kowalczyk Detachable snow plow assembly
US5611157A (en) * 1993-10-05 1997-03-18 F & B Enterprises, Inc. Wear pad assembly
USRE35700E (en) * 1991-04-15 1997-12-30 Douglas Dynamics, L.L.C. Removable snowplow assembly with pivotable lift stand
US5743032A (en) * 1993-01-22 1998-04-28 Vauhkonen; Pertti Plough blade arrangement
US5806213A (en) * 1997-01-06 1998-09-15 Douglas Dynamics, L.L.C. Rotatable support wheels for a snowplow
US6178669B1 (en) 1999-02-03 2001-01-30 Blizzard Corporation Plow hitch assembly for vehicles
US6182385B1 (en) * 1998-07-27 2001-02-06 Ken's Enterprises, Inc. Rock and material loading system
US6240662B1 (en) 1997-05-19 2001-06-05 Jeff Borowiak Snow plow having removable plow guard attachment
US6256910B1 (en) * 1999-09-29 2001-07-10 James G. Grozde Snowplow blade extension device
US6367177B1 (en) * 1999-12-16 2002-04-09 Richard Mullen Trench restoration apparatus
US6393737B2 (en) 1999-02-03 2002-05-28 Blizzard Corporation Plow support assembly
FR2831569A1 (fr) * 2001-10-31 2003-05-02 Liebherr Hydraulikbagger Lame de nivellement ou d'aplanissement pour des machines de construction
US20040006898A1 (en) * 2002-07-10 2004-01-15 Koch Timothy G. Snow plow having an in-line frame design and method of making the same
US20040006895A1 (en) * 2002-07-10 2004-01-15 Schultz Lynn W. Back blade wearstrip for efficient backward operation of snow plows and method for facilitating the same
US20040060200A1 (en) * 2001-11-12 2004-04-01 Schmeichel Charles M. Self-adjusting snow plow
US20040060201A1 (en) * 2002-07-10 2004-04-01 Schultz Lynn W. Cushion stop and method for absorbing bidirectional impact of snow plow blade tripping
US20050150140A1 (en) * 2002-07-10 2005-07-14 Schultz Lynn W. Snow plow quick connect/disconnect hitch mechanism and method
US20050166428A1 (en) * 2002-09-06 2005-08-04 Henderson Manufacturing Co. Plow hitch for vehicle
US20060005434A1 (en) * 2002-10-29 2006-01-12 Douglas Dynamics, L.L.C. Snowplow assembly
US7131221B2 (en) 2001-11-12 2006-11-07 Agri-Cover, Inc. Self-adjusting snow plow
US20070107272A1 (en) * 2005-11-03 2007-05-17 Pro-Tech Manufacturing And Distribution, Inc. snow pusher for ice and snow removal
US20070151127A1 (en) * 2001-11-12 2007-07-05 Charles Schmeichel Snow Plow Having Slidleable Retention Apparatus
EP1805373A1 (de) * 2004-10-11 2007-07-11 Patria Vammas OY Räumschildelementbefestigung in einem schneepflug
US20070256334A1 (en) * 2001-11-12 2007-11-08 Charles Schmeichel Snow plow having internally reinforced mold board
US20090241382A1 (en) * 2008-03-26 2009-10-01 Agri-Fab, Inc. Snow Removal Accessory for a Vehicle and Method of Use Thereof
US7627965B2 (en) 2001-11-12 2009-12-08 Agri-Cover, Inc. Plow blade having integrally formed attachment channel
US20090307939A1 (en) * 2008-06-17 2009-12-17 Gamble Ii Robert N V-Plow Cutting Edge Interface
US20090307937A1 (en) * 2008-06-17 2009-12-17 Koch Timothy G V-Plow
US7669353B2 (en) 2001-11-12 2010-03-02 Agri-Cover, Inc. Snow plow having hitch tongue connecting member
US7676963B2 (en) 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow including mold board having back plate
US7676964B2 (en) 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow having wear minimizing apparatus
US7681335B2 (en) 2001-11-12 2010-03-23 Agri-Cover, Inc. Snow plow having attachable biasing member
US7707753B2 (en) 2001-11-12 2010-05-04 Agri-Cover, Inc. Multifunctional plow blade positioning apparatus and method
US7735247B2 (en) 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow for all terrain vehicle
US7735245B2 (en) 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow having catch structure
US7743534B2 (en) 2001-11-12 2010-06-29 Agri-Cover, Inc. Snow plow having two-piece mold board
US7784199B2 (en) 2001-11-12 2010-08-31 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus
US8033036B1 (en) * 2008-10-31 2011-10-11 Ron Turnbull Snowplow wheel kit
US8037625B2 (en) 2003-03-31 2011-10-18 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus
US8732989B1 (en) * 2008-10-31 2014-05-27 Ron Turnbull Snowplow wheel kit
US8875419B2 (en) 2001-11-12 2014-11-04 Agri-Cover, Inc. Snow plow
US20150101216A1 (en) * 2013-10-16 2015-04-16 Ronald W. Kerr Plow mechanism spring assembly
US9151006B2 (en) 2012-02-09 2015-10-06 Pro-Tech Manufacturing And Distribution, Inc. Material pusher with control system
US20170328021A1 (en) * 2016-05-13 2017-11-16 Thomas A. Miller Actuatable plow blade ground support method and apparatus

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DE3518487A1 (de) * 1985-05-23 1986-11-27 Gummi-Küper GmbH & Co KG, 4630 Bochum Raeumleiste fuer den raeumschild eines schneepfluges
DE3940887A1 (de) * 1989-12-11 1991-07-04 Schmidt Alfred Ing Gmbh Schneepflug
CN118639588A (zh) * 2024-08-16 2024-09-13 沂水沂清环保能源有限公司 一种推进式垃圾清理设备

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Cited By (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793752A (en) * 1972-12-29 1974-02-26 Loed Corp Convertible snow plow with auxiliary ground support
US3911601A (en) * 1974-04-08 1975-10-14 Raymond Lee Organization Inc Snow blower vehicle
US4176477A (en) * 1978-03-01 1979-12-04 Arne Farden Compact unit for excavating, compacting and loading
US4288932A (en) * 1979-02-02 1981-09-15 Kueper Walter Snow removal bar for the snow removal plate of a snow plow
US4347677A (en) * 1979-02-05 1982-09-07 Gummi Kuper Gmbh & Co. Kg Snow removal bar for the snow removal plate of a snow plow
US4651450A (en) * 1984-04-11 1987-03-24 Fallline Corporation Packer bar assembly
US4574502A (en) * 1984-10-12 1986-03-11 Blau James R Transparent plow blade
US4944104A (en) * 1988-07-13 1990-07-31 Dennis Kowalczyk Detachable snow plow assembly
US4905387A (en) * 1989-08-21 1990-03-06 Street Wayne L Adjustable wheel for snow plow
USRE35700E (en) * 1991-04-15 1997-12-30 Douglas Dynamics, L.L.C. Removable snowplow assembly with pivotable lift stand
US5743032A (en) * 1993-01-22 1998-04-28 Vauhkonen; Pertti Plough blade arrangement
US5611157A (en) * 1993-10-05 1997-03-18 F & B Enterprises, Inc. Wear pad assembly
US5806213A (en) * 1997-01-06 1998-09-15 Douglas Dynamics, L.L.C. Rotatable support wheels for a snowplow
US6240662B1 (en) 1997-05-19 2001-06-05 Jeff Borowiak Snow plow having removable plow guard attachment
US6182385B1 (en) * 1998-07-27 2001-02-06 Ken's Enterprises, Inc. Rock and material loading system
US6178669B1 (en) 1999-02-03 2001-01-30 Blizzard Corporation Plow hitch assembly for vehicles
US6276076B1 (en) 1999-02-03 2001-08-21 Blizzard Corporation Plow hitch assembly for vehicles
US6393737B2 (en) 1999-02-03 2002-05-28 Blizzard Corporation Plow support assembly
US6615513B2 (en) 1999-02-03 2003-09-09 Blizzard Corporation Draw latch assembly for mounting a plow to a vehicle
US6256910B1 (en) * 1999-09-29 2001-07-10 James G. Grozde Snowplow blade extension device
US6367177B1 (en) * 1999-12-16 2002-04-09 Richard Mullen Trench restoration apparatus
FR2831569A1 (fr) * 2001-10-31 2003-05-02 Liebherr Hydraulikbagger Lame de nivellement ou d'aplanissement pour des machines de construction
US7472499B2 (en) 2001-11-12 2009-01-06 Agri-Cover, Inc. Snow plow having pivoting mechanism
US7669353B2 (en) 2001-11-12 2010-03-02 Agri-Cover, Inc. Snow plow having hitch tongue connecting member
US20040060200A1 (en) * 2001-11-12 2004-04-01 Schmeichel Charles M. Self-adjusting snow plow
US8875419B2 (en) 2001-11-12 2014-11-04 Agri-Cover, Inc. Snow plow
US8069590B2 (en) * 2001-11-12 2011-12-06 Agri-Cover, Inc. Snow plow having limiting member
US6817118B2 (en) 2001-11-12 2004-11-16 Charles M. Schmeichel Self-adjusting snow plow
US20050066554A1 (en) * 2001-11-12 2005-03-31 Schmeichel Charles M. Self-adjusting snow plow
US20100229432A1 (en) * 2001-11-12 2010-09-16 Agri-Cover, Inc. Snow plow having limiting member
US7784199B2 (en) 2001-11-12 2010-08-31 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus
US7743534B2 (en) 2001-11-12 2010-06-29 Agri-Cover, Inc. Snow plow having two-piece mold board
US7131221B2 (en) 2001-11-12 2006-11-07 Agri-Cover, Inc. Self-adjusting snow plow
US7735245B2 (en) 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow having catch structure
US7735247B2 (en) 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow for all terrain vehicle
US20070151127A1 (en) * 2001-11-12 2007-07-05 Charles Schmeichel Snow Plow Having Slidleable Retention Apparatus
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Also Published As

Publication number Publication date
AT269204B (de) 1969-03-10
CH460839A (de) 1968-08-15
GB1196674A (en) 1970-07-01

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