Foot-Assisted Snow Shovel
A foot-assisted snow shovel with a stepbar whereas the user presses down with the foot to initiate the scooping of snow, a guide bar which travels in parallel with the stepbar, a guide channel which the upper pivot points of both stepbar and guide bar are constrained within, a linkage member which holds the stepbar and guide bar parallel throughout their movement, and a scoop clevis fastened to the rear of the snow scoop to which both stepbar and guide bar attach. The parallel configuration of the stepbar and guide bar maintains the scoop in a horizontal orientation during the scooping and the tossing of snow. A protruding feature of the upper end of the guide channels allows the scoop to remain level maintaining its load of snow even as the machine is tilted backward. Rigid uprights with grips provide the framework and the means of handling and control for the user.
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENTNot Applicable
DESCRIPTION OF ATTACHED APPENDIXNot Applicable
BACKGROUND OF THE INVENTIONThis invention relates generally to the field of snow removal and more specifically to a foot-assisted snow shovel.
Snow shovels have long provided a means for removal of snow from walkways and other outdoor surfaces. However, the tools and methods commonly used for shoveling can place great strain on the lower back. In many cases, the old, young, and infirm are unable to physically perform manual snow shoveling due to the strength and endurance required. Typically, a conventional snow shovel is comprised of a handle attached to a broad scoop. To utilize the conventional snow shovel, a user would bend at the waist and thrust the scoop into or under a pile of snow and then lift and toss the burden of snow. These motions dictate that the user undergo significant physical strain primarily in the back. A shovel that does not require bending at the waist will alleviate stresses on the back muscles and allow more people to shovel snow for longer periods without fatigue or injury. Other devices have been invented for snow removal as described in the following patents:
U.S. Pat. No. 5,669,651 Shovel With Lift Aid Attachment features an attachment that allows the user to lift the entire shovel with body weight applied to a foot pedal, yet the user is still required to bend at the waist in order to scoop snow.
U.S. Pat. No. 6,343,822 Pivoting Shovel Handle and U.S. Pat. No. 5,984,393 Shovel with Pivoting Head both feature handle configurations meant to ease back strain yet both still require the user to bend at the waist in order to scoop snow.
U.S. Pat. No. 4,302,894 Manual Shoveling and Dumping Devices and U.S. Pat. No. 6,675,507 Articulated Snow Shovel both demonstrate machines for the plowing of snow by a wheeled device, yet in not all cases may snow be merely pushed to the side. In some cases (a porch for example), snow must be tossed to another area.
U.S. Pat. No. 3,310,891 Snow Remover discloses a device meant to be pushed to gather snow into its scoop. A foot-operated spring assembly transfers energy to the movable scoop to toss snow to the side.
U.S. Pat. No. 5,048,206 Combined Snow Shoveling Device and Cart discloses a machine for the plowing of snow requiring the user to manipulate a plurality of handles to scoop, raise, and dump snow.
Prior technology does not adequately provide for the scooping of snow without both alleviating back strain and providing both a reasonable and efficient method of tossing snow.
BRIEF SUMMARY OF THE INVENTIONThe primary object of the invention is a useful machine that alleviates back strain during the snow removal process. It permits the user to use body weight applied to a foot pedal to scoop snow. A secondary benefit is the capability to tilt the invention while maintaining the scoop and contents in a horizontal orientation to eliminate spillage.
In accordance with a preferred embodiment of the invention, there is disclosed a foot-assisted snow shovel comprising: a stepbar whereas the user presses down with the foot to initiate the scooping of snow, a guide bar which travels in parallel with the stepbar, a guide channel which the upper pivot points of both stepbar and guide bar are constrained within, a linkage member which holds the stepbar and guide bar parallel throughout their movement, and a scoop clevis fastened to the rear of the snow scoop to which both the lower pivot points of stepbar and guide bar attach. The parallel configuration of the stepbar and guide bar maintains the scoop in a horizontal orientation during the scooping and the tossing of snow. Pressing down on the stepbar with the foot employs the machine to scoop snow with minimal effort and no back strain. A scoop tilt feature located on the upper end of the guide channels allows the scoop to remain level maintaining its load of snow even as the handle is tilted backward prior to the tossing of snow.
Other objects and advantages of the present invention will become apparent from the following descriptions, taken in connection with the accompanying drawings, wherein, by way of illustration and example, an embodiment of the present invention is disclosed.
BRIEF DESCRIPTION OF THE DRAWINGSThe drawings constitute a part of this specification and include exemplary embodiments to the invention, which may be embodied in various forms. It is to be understood that in some instances various aspects of the invention may be shown exaggerated or enlarged to facilitate an understanding of the invention. Embodiments of this invention will now be described by way of example in association with the accompanying drawings in which:
Detailed descriptions of the preferred embodiment are provided herein. It is to be understood, however, that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure, or manner.
Referring to the drawings in detail as shown in
A detail of these movable parts is shown in
Referring back to
The upper end of stepbar 10 is where the user would apply downward force with foot pressure. As the upward force of springs 110 is overcome, the assembly of stepbar 10 and guide bar 20 begin sliding down the guide channels 40. Simultaneously, the anchor point of stepbar 10 and guide bar 20 at scoop clevis 50 exerts down and forward pushing scoop 60 forward along the ground. Snow is collected in scoop 60 until either the foot pressure end of stepbar 10 contacts the ground or foot pressure is removed.
The sequence of
While the invention has been described in connection with a preferred embodiment, it is not intended to limit the scope of the invention to the particular form set forth, but on the contrary, it is intended to cover such alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
Claims
1. A foot-assisted snow shovel comprising:
- a stepbar whereas a user presses down upon with his or her foot to initiate the scooping of snow;
- a guide bar which travels in parallel with the stepbar maintaining the scoop in a horizontal plane;
- a guide cannel which the pivot points of both stepbar and guide bar are constrained to slide vertically within;
- a linkage member which holds the stepbar and guide bar parallel throughout their movement; and
- and a scoop clevis fastened to the rear of the snow scoop to which both stepbar and guide bar attach.
2. A foot-assisted snow shovel as claimed in claim 1 further comprising a scoop tilt feature allowing the user to tilt the present invention while maintaining scoop and snow in a horizontal orientation to eliminate spillage.
Type: Application
Filed: Mar 28, 2005
Publication Date: Sep 28, 2006
Inventor: Philip Dixon (Missoula, MT)
Application Number: 11/091,036
International Classification: E01H 5/02 (20060101);