Gate assembly and method for a snow plow blade

• US 20050246926A1
• Filed: 05/07/2004
• Published: 11/10/2005
• Est. Priority Date: 05/07/2004
• Status: Active Grant

• Current Assignee: Wausau Equipment Company, Inc. (Alamo Group Incorporated)
• Original Assignee: Schmidt Engineering & Equipment, Inc. (Alamo Group Incorporated)
• Inventors: Verseef, Jan
• Granted Patent: US 7,100,311 B2
• Time in Patent Office: Days
• US Class Current: 37/281
• CPC Class Codes: E01H 5/066 Snow-plough blade accessories, e.g. deflector plates, skid shoes

Abstract

Some embodiments of the present invention provide a snow plow blade gate apparatus and method in which the gate is pivotably attached to an end of a snow plow blade. The gate can be pivotable between a deployed position in which the gate blocks snow from exiting the snow plow blade to a stowed position in which at least part of the gate is moved to a location behind the snow plow blade. In some embodiments, the gate pivots about an axis skewed with respect to a substantially vertical plane. Also, some embodiments of the present invention have an actuator that can be actuated to secure the gate in a deployed position.

Claims

1. A gate assembly for a snow plow blade having first and second opposite ends, the gate assembly comprising:

a gate pivotably coupled to the first end of the snow plow blade, the gate pivotable from a deployed position in which the gate is adjacent the first end of the snow plow blade and has a surface positioned in a first substantially laterally-facing direction to block snow from exiting the first end of the snow plow blade;

through an intermediate position in which the surface faces in a direction substantially opposite the first laterally-facing direction; and

to a stowed position in which at least part of the gate is moved to a location behind the snow plow blade and between the first and second ends of the snow plow blade.

2. The gate assembly claimed in claim 1, further comprising an actuator having a first state in which the actuator secures the gate in the deployed position and a second state in which the gate is pivotable to the stowed position.

3. The gate assembly as claimed in claim 1, wherein the gate is pivotable about a hinge proximate the first end of the snow plow blade.

4. The gate assembly as claimed in claim 1, wherein the gate is pivotable through at least 180 degrees between the deployed and stowed positions.

5. The gate assembly as claimed in claim 4, wherein the gate is located substantially entirely behind the snow plow blade and is located substantially between the ends of the snow plow blade when in the stowed position.

6. The gate assembly as claimed in claim 1, wherein the gate is pivotable about an axis skewed with respect to a substantially vertical plane.

7. The gate assembly as claimed in claim 2, wherein:

the actuator includes a telescoping rod and cylinder; and

the rod is movable into and out of engagement with the gate.

8. The gate assembly as claimed in claim 7, wherein the actuator is located proximate the first end of the snow plow blade.

9. The gate assembly as claimed in claim 7, wherein the rod is removably received within an aperture in the gate to secure the gate in the deployed position.

10. The gate assembly as claimed in claim 2, wherein the actuator is automatically actuated responsive to the gate reaching the deployed position.

11. The gate assembly as claimed in claim 10, further comprising a motor drivably coupled to the gate, wherein the gate is driven between the deployed and stowed positions by the motor.

12. The gate assembly as claimed in claim 11, further comprising a sequence valve coupled to the actuator and motor, the sequence valve triggering actuation of the actuator responsive to the gate reaching the deployed position.

13. The gate assembly as claimed in claim 1, further comprising a motor drivably coupled to the gate, wherein the gate is driven between the deployed and stowed positions by the motor.

14. The gate assembly as claimed in claim 13, wherein the motor is located proximate the first end of the snow plow blade.

15. The gate assembly as claimed in claim 1, wherein the gate is a first gate, the gate assembly further comprising a second gate pivotably coupled to the second end of the snow plow blade, the second gate pivotable from a deployed position in which the second gate is adjacent the second end of the snow plow blade and has a surface positioned in a second substantially laterally-facing direction to block snow from exiting the second end of the snow plow blade;

through an intermediate position in which the surface faces in a direction substantially opposite the second laterally-facing direction; and

to a stowed position in which at least part of the gate is moved to a location behind the snow plow blade and between the first and second ends of the snow plow blade

16. The gate assembly as claimed in claim 15, wherein the second gate is movable independently of the first gate.

17. The gate assembly as claimed in claim 1, further comprising a wear member coupled to a lower edge of the gate.

18. A gate assembly for a snow plow blade, the gate assembly comprising:

a gate located proximate an end of the snow plow blade, the gate pivotable with respect to the snow plow blade from a deployed position in which the gate blocks snow from exiting the snow plow blade to a stowed position in which at least part of the gate is moved to a location behind the snow plow blade; and

a hinge coupled to the gate and the snow plow blade, the gate pivotable between the deployed and stowed positions about an axis of the hinge, the axis of the hinge skewed in a generally upward and forward direction with respect to a direction of travel of the snow plow blade, wherein the gate is pivotable about the axis toward the deployed position in a generally forward and downward direction with respect to the direction of travel of the snow plow blade, and is pivotable about the axis toward the stowed position in a generally rearward and upward direction with respect to the direction of travel of the snow plow blade.

19. The gate assembly as claimed in claim 18, wherein the axis is skewed with respect to a substantially vertical plane by an angle greater than 0 degrees and less than about 10 degrees.

20. The gate assembly as claimed in claim 18, wherein:

the end of the snow plow blade is a first end;

the snow plow blade has an second end opposite the first end; and

at least a portion of the gate is located between the first and second ends of the snow plow blade in the snow plow blade.

21. The gate assembly as claimed in claim 20, wherein the gate is substantially entirely between the snow plow blade and substantially entirely between the first and second ends of the snow plow blade.

22. The gate assembly as claimed in claim 18, wherein the hinge is proximate the end of the snow plow blade.

23. The gate assembly as claimed in claim 18, wherein the gate is pivotable through at least 180 degrees between the deployed and stowed positions.

24. The gate assembly as claimed in claim 18, further comprising an actuator having a first state in which the actuator secures the gate in the deployed position and a second state in which the gate is pivotable to the stowed position.

25. The gate assembly as claimed in claim 24, wherein:

the actuator includes a telescoping rod and cylinder; and

the rod is movable into and out of engagement with the gate.

26. The gate assembly as claimed in claim 25, wherein the actuator is located proximate the end of the snow plow blade.

27. The gate assembly as claimed in claim 25, wherein the rod is removably received within an aperture in the gate to secure the gate in the deployed position.

28. The gate assembly as claimed in claim 24, wherein the actuator is automatically actuated responsive to the gate reaching the deployed position.

29. The gate assembly as claimed in claim 28, further comprising a motor drivably coupled to the gate, wherein the gate is driven between the deployed and stowed positions by the motor.

30. The gate assembly as claimed in claim 29, further comprising a sequence valve coupled to the actuator and motor, the sequence valve triggering actuation of the actuator responsive to the gate reaching the deployed position.

31. The gate assembly as claimed in claim 18, further comprising a motor drivably coupled to the gate, wherein the gate is driven between the deployed and stowed positions by the motor.

32. The gate assembly as claimed in claim 31, wherein the motor is located proximate the end of the snow plow blade.

33. The gate assembly as claimed in claim 18, wherein the gate is a first gate, the end of the snow plow blade is a first end, and the snow plow blade has a second end opposite the first end, the gate assembly further comprising a second gate located proximate the second end of the snow plow blade, the second gate pivotable with respect to the snow plow blade from a deployed position in which the second gate blocks snow from exiting the snow plow blade to a stowed position in which at least part of the second gate is moved to a location behind the snow plow blade

34. The gate assembly as claimed in claim 33, wherein the second gate is movable independently of the first gate.

35. The gate assembly as claimed in claim 18, further comprising a wear member coupled to a lower edge of the gate.

36. A method of deploying a snow plow blade gate with respect to a snow plow blade having first and second opposite ends, the method comprising:

pivoting the gate away from a stowed position at least partially behind the snow plow blade and between the first and second ends of the snow plow blade;

pivoting the gate toward a deployed position;

lowering a lower edge of the gate by pivoting the gate from the stowed position toward the deployed position; and

pivoting the gate to the deployed position adjacent the first end of the snow plow blade in which the gate blocks snow from exiting the first end of the snow plow blade.

37. The method as claimed in claim 36, wherein the lower edge of the gate is lowered while the gate is pivoted toward the deployed position.

38. The method as claimed in claim 36, wherein the gate pivots about an axis skewed with respect to a substantially vertical plane.

39. The method as claimed in claim 38, wherein the axis is located proximate the first end of the snow plow blade.

40. The method as claimed in claim 36, wherein pivoting the gate toward the deployed position includes pivoting the gate through at least 180 degrees.

41. The method as claimed in claim 40, wherein the gate is located substantially entirely behind the snow plow blade and substantially entirely between the first and second ends of the snow plow blade when in the stowed position.

42. The method as claimed in claim 36, further comprising actuating an actuator to pivot the gate.

43. The method as claimed in claim 42, further comprising actuating a second actuator to secure the gate in the deployed position.

44. The method as claimed in claim 43, wherein actuating the second actuator includes extending a rod with respect to a cylinder of the actuator into releasable engagement with the gate.

45. The method as claimed in claim 44, wherein actuating the second actuator further includes extending the rod into an aperture in the gate.

46. The method as claimed in claim 42, wherein the second actuator is automatically actuated when the gate reaches the deployed position.

47. The method as claimed in claim 42, wherein actuating the second actuator includes changing a state of a sequence valve coupled to the second actuator.

48. The method as claimed in claim 36, further comprising actuating an actuator to secure the gate in the deployed position after the gate has been pivoted to the deployed position.