Three-stage snow thrower

Patent metadata

Field	Value
Publication number	US-9365989-B2
Application number	US-201414467464-A
Country	US
Kind code	B2
Filing date	Aug 25, 2014
Priority date	Apr 12, 2012
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A three-stage snow thrower having a housing, a power supply operatively connected to said housing, a longitudinal drive shaft extending from the power supply into the housing, and a lateral drive shaft extending rotatably attached to opposing side walls of the housing and being meshingly engaged with the longitudinal drive shaft within a gear assembly. The power supply drives the longitudinal drive shaft, thereby causing the longitudinal drive shaft to rotate, and at least a portion of such rotation is transferred to the lateral drive via a gear assembly. The first stage assembly includes a plurality of augers attached to the lateral drive shaft, wherein the first stage assembly pushes loosened snow axially toward the gear assembly. The second stage assembly includes at least one auger attached to the longitudinal drive shaft, wherein the second stage assembly pushes the snow from the first stage assembly axially rearward in a transverse manner relative to the first stage assembly. The third stage assembly includes an impeller that rotates to throw the snow from the second stage assembly through a chute attached to the housing to expel the snow from the housing.

First claim

What is claimed is:

1. A three-stage snow thrower comprising:
a power supply;
a housing operatively connected to said power supply;
a longitudinal drive shaft operatively connected to said power supply and at least a portion of said longitudinal drive shaft positioned within said housing, wherein said power supply selectively rotates said longitudinal drive shaft;
a lateral drive shaft operatively connected to said longitudinal drive shaft, wherein said lateral drive shaft is oriented transverse relative to said longitudinal drive shaft, and rotation of said longitudinal drive shaft causes rotation of said lateral drive shaft;
a first stage assembly operatively connected to said lateral drive shaft for moving snow axially relative to said lateral drive shaft;
a second stage assembly operatively connected to said longitudinal drive shaft for receiving said snow from said first stage assembly and moving said snow axially relative to said longitudinal drive shaft; and
a third stage assembly operatively connected to said longitudinal drive shaft adjacent to said second stage assembly for receiving said snow from said second stage assembly and moving said snow radially into a chute to discharge said snow from said housing.

2. The snow thrower of claim 1 , wherein said first stage assembly includes at least two augers operatively connected to said lateral drive shaft, and rotation of said lateral drive shaft causes said at least two augers to rotate about said lateral drive shaft to move said snow axially along said lateral drive shaft.

3. The snow thrower of claim 2 , wherein said at least two augers of said first stage assembly includes at least one auger positioned adjacent to each side of a gear assembly in which a portion of both said longitudinal drive shaft and said lateral drive shaft are positioned, and rotation of said lateral longitudinal drive shaft causes each of said augers of said second stage assembly to rotate about said lateral drive shaft to move said snow axially toward said gear assembly.

4. The snow thrower of claim 1 , wherein said second stage assembly includes two augers operatively connected to said longitudinal drive shaft, and rotation of said longitudinal drive shaft causes said augers to rotate about said longitudinal drive shaft to move said snow axially along said longitudinal drive shaft.

5. The snow thrower of claim 1 , wherein said second stage assembly moves snow in a direction transverse relative to a direction said first stage assembly moves snow.

6. The snow thrower of claim 1 , wherein said third stage assembly includes an impeller operatively connected to said longitudinal drive shaft, and rotation of said longitudinal drive shaft causes said impeller to rotate about said longitudinal drive shaft to move said snow radially away from said longitudinal drive shaft into said chute.

7. The snow thrower of claim 1 further comprising a gear assembly operatively connected to said longitudinal drive shaft and said lateral drive shaft, wherein rotation of said longitudinal drive shaft is transferrable to said lateral drive shaft within said gear assembly.

8. The snow thrower of claim 7 , wherein said longitudinal drive shaft includes a first worm gear formed into a portion of an outer surface thereof and said lateral drive shaft includes a second worm gear formed into a portion of an outer surface thereof, said first and second worm gears being in meshed engagement within said gear assembly.

9. A snow thrower comprising:
a housing having a chute operatively connected to said housing, and snow is expellable from said housing through said chute;
a power supply operatively connected to said housing;
a first stage assembly, wherein said first stage assembly moves said snow in a lateral direction within said housing;
a second stage assembly, wherein said second stage assembly moves said snow longitudinally within said housing in a direction transverse to said lateral direction; and
a third stage assembly, wherein said third stage assembly moves said snow radially through said chute to be expelled from said housing;
wherein said power supply is operatively connected to said first, second, and third stage assemblies for providing rotational power to each of said stage assemblies, and wherein said second stage assembly rotates at a different rotational velocity than at least one of said first stage assembly and said third stage assembly, and wherein rotation of the third stage assembly causes rotation of the first stage assembly.

10. The snow thrower of claim 9 , wherein said first stage assembly includes a lateral drive shaft rotatably attached to opposing side walls of said housing and at least two augers operatively connected to said lateral drive shaft.

11. The snow thrower of claim 10 , wherein said second stage assembly includes a longitudinal drive shaft selectively rotatable by said power supply and at least one auger operatively connected to said longitudinal drive shaft, and said longitudinal drive shaft being operatively connected to said lateral drive shaft in a transverse relationship, wherein rotation of said longitudinal drive shaft produces rotation of said lateral drive shaft.

12. The snow thrower of claim 11 further comprising a gear assembly having a casing, wherein said longitudinal drive shaft is meshingly engaged with said lateral drive shaft within said housing.

13. The snow thrower of claim 11 , wherein said third stage assembly includes an impeller operatively connected to said longitudinal drive shaft.

14. A snow thrower comprising:
a power supply;
a housing operatively connected to said power supply;
a first longitudinal drive shaft operatively connected to said power supply, wherein said power supply selectively rotates said first longitudinal drive shaft;
a second longitudinal drive shaft operatively connected to said power supply, wherein said power supply selectively rotates said second longitudinal drive shaft, and wherein said second longitudinal drive shaft is concentrically oriented relative to said first longitudinal drive shaft;
a lateral drive shaft operatively connected to said longitudinal drive shaft, wherein said lateral drive shaft is oriented transverse relative to said first and second longitudinal drive shafts, and wherein rotation of at least one of said first longitudinal drive shaft or said second longitudinal drive shaft causes rotation of said lateral drive shaft;
a first stage assembly operatively connected to said lateral drive shaft for moving snow axially relative to said lateral drive shaft when said first stage assembly rotates;
a second stage assembly operatively connected to said first longitudinal drive shaft for receiving said snow from said first stage assembly and moving said snow axially relative to said first longitudinal drive shaft; and
a third stage assembly operatively connected to said second longitudinal drive shaft adjacent for receiving said snow from said second stage assembly and moving said snow radially into a chute to discharge said snow from said housing.

15. The snow thrower of claim 14 , wherein said second stage assembly rotates at the same rotational velocity as said third stage assembly.

16. The snow thrower of claim 14 , wherein said second stage assembly rotates at a different rotational velocity as said third stage assembly.

17. The snow thrower of claim 14 , wherein said second stage assembly rotates at a different rotational velocity as said first stage assembly.

18. The snow thrower of claim 14 , wherein one of said first or second lo

Assignees

• Mtd Products Inc

Inventors

• Cmich Ryan
• Dilgard Tim
• Eavenson Sr Jimmy N
• Hein Dave
• Jocke Joe
• Saha Amit

Classifications

• E01H5/098 Primary

  about horizontal or substantially horizontal axises perpendicular or substantially perpendicular to the direction of clearing · CPC title

• E01H5/096

  about axes parallel or substantially parallel to the direction of clearing · CPC title

• E01H5/04 Primary

  Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying {levelling} elements, conveying pneumatically {for the dislodged material}(E01H5/10, E01H5/12 take precedence) · CPC title

• E01H5/045 Primary

  Means per se for conveying or discharging the dislodged material, e.g. rotary impellers, discharge chutes (dislodging apparatus provided therewith E01H5/07, E01H5/08, E01H5/104, E01H5/12) · CPC title

• E01H5/09 Primary

  the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels · CPC title