Claims
- 1. A steerable wheeled pushcart, which comprises a body, at least two wheels rotatably mounted on said body and positioned to support said body on a surface, said wheels having a fixed orientation with respect to said body, a handle having a first end with means for applying rotating force to said handle, said handle having a second end at an angle to the first end, the second end of said handle being rotatably attached to said body, said handle having a lever arm extending from the second end of said handle, said pushcart additionally comprising opposing springs connected between the lever arm and a support fixed with respect to said opposing springs, said pushcart additionally comprising a pair of front wheels rotatably and pivotally mounted on said body, said handle being rotatably attached to said body by a steering mechanism, said steering mechanism being pivotally attached to said body for movement about an axis normal to a longitudinal axis of said body, said pair of front wheels being pivotally responsive to movement of said body produced by rotation of said handle when said pair of front wheels rests on a supporting surface.
- 2. The steerable wheeled pushcart of claim 1 in which the lever arm and said opposing springs are enclosed by said body.
- 3. The steerable wheeled pushcart of claim 2 additionally comprising a pair of steering radius limit stops fixedly attached to said body on either side of the lever arm and positioned to be contacted by the lever arm.
- 4. The steerable wheeled pushcart of claim 1 in which said pair of front wheels is pivotally attached to said body by a pair of pivot points in front of an axle on which said front wheels are rotatably mounted, said pushcart additionally including a plurality of tie rods connecting said pair of wheels for pivotal movement together.
- 5. The steerable wheeled pushcart of claim 4 in which said lever arm extends upward from said handle and said pair of opposed springs extend laterally of said handle from said lever arm.
Parent Case Info
This is a continuation-in-part of application Ser. No. 860,545, filed May 7, 1986, and now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
154260 |
Mar 1938 |
ATX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
860545 |
May 1986 |
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