Snowthrower

Abstract

A snowthrower includes a shaft configured to rotate around a first axis, a first auger connected to the shaft, an intake housing configured to receive at least a portion of the shaft, and a scraping assembly mounted to the intake housing. The scraping assembly includes a bottom edge disposed frontward of the first axis.

What is claimed is: 
     
         1 . A snowthrower, comprising:
 a shaft configured to rotate around a first axis, wherein a first auger is connected to the shaft;   an intake housing configured to receive at least a portion of the shaft; and   a scraping assembly mounted to the intake housing;   wherein the scraping assembly comprises a bottom edge disposed frontward of the first axis.   
     
     
         2 . The snowthrower of  claim 1 , wherein the intake housing has a first sidewall and a second sidewall opposite the first sidewall, the first sidewall and the second sidewall together substantially define a front end and a rear end of the intake housing. 
     
     
         3 . The snowthrower of  claim 2 , wherein the first sidewall has a first front edge, the second sidewall has a second front edge, at least a portion of the first front edge and at least a portion of the second front edge slopes rearward to an upper portion of the intake housing. 
     
     
         4 . The snowthrower of  claim 2 , wherein the scraping assembly is mounted to the intake housing along a second axis, a ratio of a front-rear distance from the front end to the second axis to a front-rear distance from the front end to the rear end is greater than or equal to 0 and smaller than or equal to 0.5. 
     
     
         5 . The snowthrower of  claim 4 , wherein the scraping assembly is fixedly mounted to the intake housing with a first fastening member and a second fastening member, and the first fastening member and the second fastening member are disposed along the second axis. 
     
     
         6 . The snowthrower of  claim 2 , wherein a front-rear distance from the bottom edge to the rear end is longer than a front-rear distance from the first axis to the rear end. 
     
     
         7 . The snowthrower of  claim 2 , wherein a front-rear distance from the bottom edge to the front end is shorter than a front-rear distance from the first axis to the front end. 
     
     
         8 . The snowthrower of  claim 1 , wherein the scraping assembly comprises a scraping surface forming an angle greater than or equal to 0 degrees and smaller than or equal to 30 degrees to the ground. 
     
     
         9 . The snowthrower of  claim 1 , wherein the scraping assembly comprises an integrated scraping board. 
     
     
         10 . The snowthrower of  claim 1 , wherein the first auger has a first outer edge, and the first outer edge is configured to contact the snow before the intake housing contacts the snow. 
     
     
         11 . The snowthrower of  claim 10 , wherein a second auger is connected to the shaft, the first auger and the second auger are arranged on the shaft along different axial positions, the second auger has a second outer edge, and the second outer edge is configured to contact the snow before the intake housing contacts the snow. 
     
     
         12 . The snowthrower of  claim 1 , wherein the snowthrower comprises a support assembly connected to the intake housing, the support assembly is configured to elevate the intake housing from the ground and to contact the ground with a first material or a second material selectively. 
     
     
         13 . The snowthrower of  claim 12 , wherein the support assembly has a supporting state and a storing state, when the support assembly is in the supporting state, the first material is selected to contact with the ground, when the support assembly is in the storing state, the second material is selected to contact with the ground. 
     
     
         14 . The snowthrower of  claim 12 , wherein the first material is a metal material, and the second material is a plastic material. 
     
     
         15 . The snowthrower of  claim 12 , wherein at least a portion of the support assembly is movably connected to intake housing. 
     
     
         16 . A snowthrower, comprising:
 a shaft configured to rotate around an axis, wherein a first auger is connected to the shaft;   an intake housing configured to receive at least a portion of the shaft;   a scraping assembly mounted to the intake housing; and   an enclosure with a center of gravity consisting of the shaft, the first auger, the intake housing, and the scraping assembly;   wherein the first auger has a first inner edge defining a first inner circumference, the center of gravity is located within the first inner circumference, the scraping assembly comprises a bottom edge disposed frontward of the center of gravity.   
     
     
         17 . A snowthrower, comprising:
 a shaft configured to rotate around a first axis, wherein a first auger is connected to the shaft;   an intake housing configured to receive at least a portion of the shaft;   a wheel assembly configured to rotate around a wheel axis; and   a scraping assembly mounted to the intake housing;   wherein the scraping assembly comprises a bottom edge, and a ratio of a front-rear distance from the bottom edge to the wheel axis to a front-rear distance from the first axis to the wheel axis is greater than or equal to 1 and smaller than or equal to 1.5.   
     
     
         18 . The snowthrower of  claim 17 , wherein the intake housing has a first sidewall and a second sidewall opposite the first sidewall, the first sidewall and the second sidewall define a front end and a rear end of the intake housing. 
     
     
         19 . The snowthrower of  claim 18 , wherein a front-rear distance from the bottom edge to the rear end is longer than a front-rear distance from the center of gravity to the rear end. 
     
     
         20 . The snowthrower of  claim 18 , wherein a front-rear distance from the bottom edge to the front end is shorter than a front-rear distance from the center of gravity to the front end.